Systems Engineering and Management"
|
|
- Neil Gilmore
- 8 years ago
- Views:
Transcription
1 Seminar 10! Project Management System Design! Spacecraft Guidance! Robert Stengel! FRS 112, From the Earth to the Moon! Princeton University, 2015! Project Management Spacecraft Design!" "Fundamentals of Space Systems, Ch 1" Sec " "GOES N Series Data Book! Ch 1, 2, 8, 9, 11, 12, 13" " Spacecraft Guidance:" Understanding Space! Sec 12.3" Copyright 2015 by Robert Stengel. All rights reserved. For educational use only.! " 1! Systems Engineering and Management"!# Introduction"!# Fundamentals of System Engineering"!# Concepts in Systems Engineering"!# Project Development Process"!# Management of the Development of Space Systems"!# Organization" Pisacane, V., Fundamentals of Space System Design, Ch. 1" 2!
2 Systems Engineering" Pisacane, V., Fundamentals of Space System Design, Ch. 1" 3! Product Development" Pisacane, V., Fundamentals of Space System Design, Ch. 1" 4!
3 Spacecraft Mission Objectives and Requirements" Fortescue" 5! Requirements Definition" What must the system accomplish?" Why must it be done?" How do we achieve the design goal?" What are the alternatives?" What sub-systems perform specified functions?" Are all functions technically feasible?" How can the system be tested to show that it satisfies requirements?" Wertz and Larson" 6!
4 Spacecraft Subsystems" Numbers refer to mission functions in Fortesque et al, Spacecraft Systems Engineering" 7! Power and Propulsion" #Solar cells" # Kick motor/ payload assist module" #Attitude-control/ orbit-adjustment/ station-keeping thrusters" #Batteries, fuel cells" #Pressurizing bottles" #De-orbit/ graveyard systems" Satellite Systems " Structure" #Skin, frames, ribs, stringers, bulkheads" #Propellant tanks" #Heat/solar/ micrometeoroid shields, insulation" #Articulation/ deployment mechanisms" #Gravity-gradient tether" #Re-entry system (e.g., sample return)" Electronics" #Payload" #Control computers" #Control sensors and actuators" #Control flywheels" #Radio transmitters and receivers" #Radar transponders" #Antennas" 8!
5 Functional Requirements of Spacecraft Subsystems" 1.# Payload must be pointed in the right direction" 2.# Payload must be operable" 3.# Data must be communicated to the ground" 4.# Desired orbit for the mission must be maintained" 5.# Payload must be held together and mounted on the spacecraft structure" 6.# Payload must operate reliably over some specified period" 7.# Adequate power must be provided" 9! LADEE" Typical Satellite Mass Breakdown" Satellite without on-orbit/de-orbit propulsion" Kick motor/ PAM can add significant mass" 10!
6 Communications Satellite Mass Breakdown " 11! Recommended Mass Growth Margins " Pisacane, V., Fundamentals of Space System Design, Ch. 1" 12!
7 LADEE Bus Modules" Satellite Buses" Standardization of common components for a variety of missions" Modular Common Spacecraft Bus" Lander Congiguration" 13! Hine et al" 14!
8 Geostationary Operational Environmental Satellite (GOES-NOP)" 15! GOES Expanded View" 16!
9 GOES Weather Watch System" 17! GOES Communication Sub-System" 18!
10 GOES Telemetry and Command Sub-System" 19! GOES Electric Power Sub-System" 20!
11 GOES Attitude Control Sub-System" 21! GOES Propulsion Sub-System" 22!
12 GOES Thermal Control Sub-System" 23! Guidance, Navigation, and Control! 24!
13 Guidance, Navigation, and Control " Navigation: Where are we?" Guidance: How do we get to our destination?" Control: What do we tell our vehicle to do?" 25! First Apollo Program Contract! MIT Instrumentation Laboratory! August 9, 1961" Charles Stark Draper" ( )" BUT Lunar landing technique was not decided until July, 1962" 26!
14 Components of Apollo CSM Primary Navigation Guidance and Control System ( PNGCS )" Mindell, D., Digital Apollo, Ch. 5" 27! Landmark Tracking for Apollo Guidance" Mindell, D., Digital Apollo, Ch. 5" 28!
15 IMU Alignment and State Update" Mindell, D., Digital Apollo, Ch. 5" 29! Apollo Guidance Computer" Parallel processor" 16-bit word length (hexadecimal)" Memory" # 36,864 words (fixed)" # 2,048 words (variable)" 1 st operational solid-state computer" Identical computers in CSM and LM" # Different software (with many identical subroutines)" 30!
16 Apollo Guidance Computer (AGC) vs. iphone 5S"!# 16-bit Processor"!# Storage: 36,864 words (fixed)"!# 2,048 words (variable)"!# Clock speed: 1 million ticks per sec"!# Weight: 70 lb"!# 1 st operational solid-state computer"!# Separate Inertial Measurement Unit"!# 64-bit Processor"!# Storage: Gbytes"!# 1 Gbyte RAM"!# Clock speed: 1,300 million ticks per sec"!# Weight: 1/4 lb"!# Plus accelerometers angular rate gyros,." 31! Apollo Guidance Computer Magnetic Core Memory Ropes" 1 core = 1 bit " 1 Kiloword Memory Bank"!# No built-in redundancy"!# No redundant computers"!# No failures"!# Mean time between failures = $" 32!
17 Apollo Lunar Module Radars" Landing radar" # 3-beam Doppler radar altimeter" # LM descent stage " Rendezvous radar" # continuous-wave tracking radar" # LM ascent stage! 33! Apollo Guidance Computer Commands" Display/Keyboard (DSKY)" Sentence" # Subject and predicate" # Subject is implied" Astronaut, or" GNC system" # Sentence describes action to be taken employing or involving an object" Predicate" # Verb = Action" # Noun = Variable or Program (i.e., the object)" See And for simulation" 34!
18 Numerical Codes for Verbs and Nouns in Apollo Guidance Computer Programs" Verb Code!Description!!Remarks! 01!Display 1st component of!octal display of data!!!!on REGISTER 1! 02!Display 2nd component of!octal display of data!!!!on REGISTER 1! 03!Display 3rd component of!octal display of data!!!!on REGISTER 1! Noun Code!Description!!Scale/Units! 01!!Specify machine address!xxxxx! 02!!Specify machine address!xxxxx! 03!!(Spare)! 04!!(Spare)! 05!!Angular error!!xxx.xx degrees! 06!!Pitch angle!!xxx.xx degrees!!!heads up-down!!+/ ! 07!!Change of program or major mode! 11!!Engine ON enable! 35! Verbs and Nouns in Apollo Guidance Computer Programs" Verbs (Actions)" # Display" # Enter" # Monitor" # Write" # Terminate" # Start" # Change" # Align" # Lock" # Set" # Return" # Test" # Calculate" # Update" Selected Nouns (Variables)" # Checklist" # Self-test ON/OFF" # Star number" # Failure register code" # Event time" # Inertial velocity" # Altitude" # Latitude" # Miss distance" # Delta time of burn" # Velocity to be gained" Selected Programs (CM)" # AGC Idling" # Gyro Compassing" # LET Abort" # Landmark Tracking" # Ground Track Determination" # Return to Earth" # SPS Minimum Impulse" # CSM/IMU Align" # Final Phase" # First Abort Burn" 36!
19 A Little AGC Digital Autopilot Code" 37! Apollo GNC Software Testing and Verification" Major areas of testing" # Computational accuracy" # Proper logical sequences" Testing program" # Comprehensive test plans" # Specific initial conditions and operating sequences" # Performance of tests" # Comparison with prior simulations, evaluation, and re-testing" Levels of testing" # 1: Specifications coded in higher-order language for non-flight hardware (e.g., mainframe then, PCs now)" # 2: Digital simulation of flight code" # 3: Verification of complete programs or routines on laboratory flight hardware" # 4: Verification of program compatibility in mission scenarios" # 5: Repeat 3 and 4 with flight hardware to be used for actual mission" # 6: Prediction of mission performance using non-flight computers and laboratory flight hardware" 38!
20 Lunar Module Navigation, Guidance, and Control Configuration" 39! Lunar Descent Guidance! 40!
21 Lunar Module Transfer Ellipse to Powered Descent Initiation" 41! Lunar Module Powered Descent" 42!
22 Lunar Module Descent Events" 43! Lunar Module Descent Targeting Sequence" Braking Phase (P63)" Approach Phase (P64)" 44! Terminal Descent Phase (P66)!
23 Characterize Braking Phase By Five Points" 45! Lunar Module Descent Guidance Logic (Klumpp, Automatica, 1974)" Reference (nominal) trajectory, r r (t), from target position back to starting point (Braking Phase example)" # Calculated before mission" # Three 4 th -degree polynomials in time" # 5 points needed to specify each polynomial " r r (t) = r t + v t t + a t t j t t s t t 4 24! x(t) $ # r(t) = # y(t) "# z(t) % 46!
24 Coefficients of the Polynomials" r r (t) = r t + v t t + a t t j t t s t t 4 24 r = position vector" v = velocity vector " a = acceleration vector" j = jerk vector (time derivative of acceleration)" s = snap vector (time derivative of jerk)!! x$ # r = # y "# z% v = dr dt =! # # " #!x!y!z $! # = # % # "# v x v y v z $ %! a = dv dt = # # # "# a x a y a z $ %! j = da dt = # # # "# j x j y j z $ %! s = dj dt = # # # "# s x s y s z $ % 47! Corresponding Reference Velocity and Acceleration Vectors" v r (t) = v t + a t t + j t t s t t 3 6 a r (t) = a t + j t t + s t t 2 a r (t) is the reference control vector" # Descent engine thrust / mass = total acceleration" # Vector components controlled by orienting yaw and pitch angles of the Lunar Module! 48! 2
25 Guidance Logic Defines Desired Acceleration Vector" If initial conditions, dynamic model, and thrust control were perfect, a r (t) would produce r r (t)! a r (t) = a t + j t t + s t t 2 2! r r (t) = r t + v t t + a t t j t t s t t but they are not" Therefore, feedback control is required to follow the reference trajectory! 49! Guidance Law for the Lunar Module Descent" Linear feedback guidance law (real time! a command (t) = a r (t) + K V [ v measured (t)! v r (t)]+ K R r measured (t)! r r (t) K V :velocity error gain K R :position error gain [ ] Nominal acceleration profile is corrected for measured differences between actual and reference flight paths" Considerable modifications made in actual LM implementation (see Klumpp s original paper on Blackboard)! 50!
26 LM Manual Control Response During Simulated Landing" 51! Simulated LM Manual Control Response To Rate Command" 52!
27 Next Time:! Commercial Space Flight" Augustine s Laws, Ch 1, 8, 26, 36, 37, 40; 1986 (On-Line Copy in Princeton University Library)" " Commercial Space Transportation:! Industry Trends, Government Challenges, and International Competitiveness Issues, GAO T, 2013 " " Telemetry, Communications Tracking" [Understanding Space] Sec 13.1, "15.1 " 53! Supplemental Material! 54!
28 Apollo GNC Software Specification Control" Guidance System Operations Plan (GSOP)" # NASA-approved specifications document for mission software" # Changes must be approved by NASA Software Control Board" Change control procedures" # Program Change Request (NASA) or Notice (MIT)" # Anomaly reports" # Program and operational notes" Software control meetings" # Biweekly internal meetings" # Joint development plan meetings" # First Article Configuration Inspection" # Customer Acceptance Readiness Review" # Flight Software Readiness Review" 55! Apollo GNC Software Documentation and Mission Support" Documentation generation and review" # GSOP: 1: Prelaunch 2: Data links 3: Digital autopilots 4: Operational modes 5: Guidance equations 6: Control data" # Functional description document: H/W-S/W interfaces, flowcharts of procedures" # Computer listing of flight code" # Independently generated program flowchart" # Users Guide to AGC" # NASA program documents: Apollo Operations Handbook, Flight Plans and Mission Rules, various procedural documents" Mission support" # Pre-flight briefings to the crew" # Personnel in Mission Control and at MIT during mission" 56!
29 Ascent (Launch) Guidance! 57! Gravity-Turn Flight Path" Hermann Oberth" Oberth s Synergy Curve " Gravity-turn flight path is function of 3 variables" # Initial pitchover angle (from vertical launch)" # Velocity at pitchover" # Acceleration profile, T(t)/m(t) " Gravity-turn program closely approximated by tangent steering laws " 58!
30 Tangent Steering Laws Approximate Gravity Turn " Neglecting surface curvature " # tan!(t) = tan! o 1" t $ % t BO ' ( Open-loop command, i.e., no feedback of vehicle state " Accounting for effect of Earth surface curvature on burnout flight path angle " * tan!(t) = tan! o 1" t $, " tan# t BO % + t t BO ' - ( ) /. 59! Feedback Guidance Law " Errors due to disturbances and modeling errors corrected by feedback control with damping " Thrust Angle(t) = c! [! c (t) "!(t)]" c q q(t) q = d! dt = pitch rate 60!
31 Phases of" Ascent Guidance" Vertical liftoff" Roll to launch azimuth" Pitch program to atmospheric exit " # Jet stream penetration" # Booster cutoff and staging" Explicit guidance to desired orbit" # Booster separation" # Acceleration limiting" # Orbital insertion " 61! Jet Stream Profiles " Launch vehicle must able to fly through strong wind profiles" Design profiles assume 95 th -99 th -percentile worst winds and wind shear" 62!
32 Thrust Vector Control During Launch " Attitude control" # Attitude and rate feedback" Drift-minimum control" # Attitude and accelerometer feedback" # Increased loads" Load relief control" # Rate and accelerometer feedback" # Increased drift" 63! Explicit Guidance Law " ~Lunar Module Ascent, Space Shuttle Launch " (Brand, Brown, Higgins, and Pu, CSDL, 1972) " Initial conditions" # End of pitch program, outside atmosphere" Final condition" # Insertion in desired orbit" Initial inputs" # Desired radius" # Desired velocity magnitude" # Desired flight path angle" # Desired inclination angle" # Desired longitude of the ascending/ descending node" Continuing outputs" # Unit vector describing desired thrust direction" # Throttle setting" 64!
33 Guidance Program Initialization" Thrust acceleration estimate" Mass/mass flow rate" Acceleration limit (~ 3g)" Effective exhaust velocity" Various coefficients" Unit vector normal to desired orbital plane, i q " " sini d sin! d % $ ' i q = $ sini d cos! d ' # $ cosi d ' i d :desired inclination angle! d :desired longitude of descending node 65! Guidance Program Operation: Position and Velocity " Thrust acceleration estimate, a T, from guidance system" Compute corresponding mass/flow rate and throttle setting, #T" Position"! r$! r $ # # # y = # rsin '1 ( i r i q ) "# z% "# open % Velocity"! r $! v IMU i r $ # # # y = # v IMU i q "# z % "# v IMU i z % v IMU :velocity estimate in IMU frame 66!
34 Guidance Program: Velocity and Time to Go " Effective gravitational acceleration" g eff =! µ r + r " v 2 2 Time to go (to burnout)" r 3 t gonew = t goold! "t!t :guidance interval Velocity to be gained" " $ v go = $ $ # $ (!r d!!r )! g eff t go / 2!!y!z d!!z Time to go prediction (prior to acceleration limiting)" t go = ṁ m 1! e!v go / c ( eff ) % ' ' ' ' c eff :effective exhaust velocity 67! Guidance Program Commands " Guidance law produces required radial and cross-range accelerations" [ ]! g eff [ ] a Tr = a T A + B( t! t o ) ( ) a Ty = a T C + D t! t o a T = net available acceleration, accounting for limit Guidance coefficients, A, B, C, and D are functions of" ( r d,r, r, t go ) ( y, y,t go ) plus c eff,m!m, acceleration limit 68!
35 Guidance Program Commands " Required thrust direction, i T (i.e., vehicle orientation in (i r, i q, i z ) frame"! # a T = # # "# a Tr a Ty what's left over $ ; i T = a T a T % Guidance philosophy" Force spacecraft into desired orbital plane" Climb toward desired 2-D orbit" Achieve orbital velocity" 69!
Basic Components of a Spacecraft Computer. Hardware, Software, and Documentation
Flight Computers and Computing Space System Design, MAE 342, Princeton University Robert Stengel A Typical Space/Ground Information System System definition Computer architecture Components Data coding
More informationSpace Shuttle Mission SPACE SHUTTLE SYSTEM. Operation. Luca d Agostino, Dipartimento di Ingegneria Aerospaziale, Università di Pisa, 2010/11.
Space Shuttle Mission SPACE SHUTTLE SYSTEM Operation SPACE SHUTTLE SYSTEM Operation The flight plan and operation of the Space Shuttle differs markedly from that of the now-familiar launch procedures and
More informationAtlas Emergency Detection System (EDS)
Atlas Emergency Detection System (EDS) Jeff A. Patton 1 United Launch Alliance, Littleton, Colorado, 80127-7005 [Abstract] The Atlas Expendable Launch Vehicle Program has been studying safe abort requirements
More informationBasic Principles of Inertial Navigation. Seminar on inertial navigation systems Tampere University of Technology
Basic Principles of Inertial Navigation Seminar on inertial navigation systems Tampere University of Technology 1 The five basic forms of navigation Pilotage, which essentially relies on recognizing landmarks
More informationRS platforms. Fabio Dell Acqua - Gruppo di Telerilevamento
RS platforms Platform vs. instrument Sensor Platform Instrument The remote sensor can be ideally represented as an instrument carried by a platform Platforms Remote Sensing: Ground-based air-borne space-borne
More informationCan Hubble be Moved to the International Space Station? 1
Can Hubble be Moved to the International Space Station? 1 On January 16, NASA Administrator Sean O Keefe informed scientists and engineers at the Goddard Space Flight Center (GSFC) that plans to service
More informationChapter 2. Mission Analysis. 2.1 Mission Geometry
Chapter 2 Mission Analysis As noted in Chapter 1, orbital and attitude dynamics must be considered as coupled. That is to say, the orbital motion of a spacecraft affects the attitude motion, and the attitude
More informationSatellite technology
Satellite technology Overview What is a satellite? The key elements of orbital position Satellite manufacturers and design The components of a satellite: payload and bus Digital versus analogue How do
More informationPenn State University Physics 211 ORBITAL MECHANICS 1
ORBITAL MECHANICS 1 PURPOSE The purpose of this laboratory project is to calculate, verify and then simulate various satellite orbit scenarios for an artificial satellite orbiting the earth. First, there
More informationLecture L14 - Variable Mass Systems: The Rocket Equation
J. Peraire, S. Widnall 16.07 Dynamics Fall 2008 Version 2.0 Lecture L14 - Variable Mass Systems: The Rocket Equation In this lecture, we consider the problem in which the mass of the body changes during
More informationCHAPTER 2 ORBITAL DYNAMICS
14 CHAPTER 2 ORBITAL DYNAMICS 2.1 INTRODUCTION This chapter presents definitions of coordinate systems that are used in the satellite, brief description about satellite equations of motion and relative
More informationOverview of the Orbiting Carbon Observatory (OCO) Mishap Investigation Results For Public Release
Overview of the Orbiting Carbon Observatory (OCO) Mishap Investigation Results For Public Release SUMMARY The Orbiting Carbon Observatory was a National Aeronautics and Space Administration satellite mission
More information2. Orbits. FER-Zagreb, Satellite communication systems 2011/12
2. Orbits Topics Orbit types Kepler and Newton laws Coverage area Influence of Earth 1 Orbit types According to inclination angle Equatorial Polar Inclinational orbit According to shape Circular orbit
More informationWEIGHTLESS WONDER Reduced Gravity Flight
WEIGHTLESS WONDER Reduced Gravity Flight Instructional Objectives Students will use trigonometric ratios to find vertical and horizontal components of a velocity vector; derive a formula describing height
More informationOrbital Dynamics: Formulary
Orbital Dynamics: Formulary 1 Introduction Prof. Dr. D. Stoffer Department of Mathematics, ETH Zurich Newton s law of motion: The net force on an object is equal to the mass of the object multiplied by
More informationAstrodynamics (AERO0024)
Astrodynamics (AERO0024) 6. Interplanetary Trajectories Gaëtan Kerschen Space Structures & Systems Lab (S3L) Course Outline THEMATIC UNIT 1: ORBITAL DYNAMICS Lecture 02: The Two-Body Problem Lecture 03:
More informationLecture L17 - Orbit Transfers and Interplanetary Trajectories
S. Widnall, J. Peraire 16.07 Dynamics Fall 008 Version.0 Lecture L17 - Orbit Transfers and Interplanetary Trajectories In this lecture, we will consider how to transfer from one orbit, to another or to
More informationSCADE Suite in Space Applications
SCADE Suite in Space Applications at EADS David Lesens 09/10/2008 Overview Introduction Historical use of SCADE at EADS Astrium ST Why using SCADE? The Automatic Transfer Vehicle (ATV) M51 and Vega R&T
More informationTOPO Trajectory Operations Officer
ISS Live! was developed at NASA s Johnson Space Center (JSC) under NASA Contracts NNJ14RA02C and NNJ11HA14C wherein the U.S. Government retains certain rights. Console Handbook TOPO Trajectory Operations
More informationOnboard electronics of UAVs
AARMS Vol. 5, No. 2 (2006) 237 243 TECHNOLOGY Onboard electronics of UAVs ANTAL TURÓCZI, IMRE MAKKAY Department of Electronic Warfare, Miklós Zrínyi National Defence University, Budapest, Hungary Recent
More informationOrigins of the Unusual Space Shuttle Quaternion Definition
47th AIAA Aerospace Sciences Meeting Including The New Horizons Forum and Aerospace Exposition 5-8 January 2009, Orlando, Florida AIAA 2009-43 Origins of the Unusual Space Shuttle Quaternion Definition
More informationSatellite Communications
Satellite Communications Department of Electrical Engineering Faculty of Engineering Chiangmai University Origin of Satellite Communications Arthur C. Clark (1945) British Science fiction writer propose
More informationSIVAQ. Manufacturing Status Review
SIVAQ Manufacturing Status Review Project Overview 2 Mission Statement: Augment the capabilities of the Parrot AR Drone 2.0 such that it flies autonomously with a predetermined flight path, records data,
More informationInteraction of Energy and Matter Gravity Measurement: Using Doppler Shifts to Measure Mass Concentration TEACHER GUIDE
Interaction of Energy and Matter Gravity Measurement: Using Doppler Shifts to Measure Mass Concentration TEACHER GUIDE EMR and the Dawn Mission Electromagnetic radiation (EMR) will play a major role in
More informationSpace Flight Project Work Breakdown Structure
APPENDIX G. (WBS) Space Flight Project Work Breakdown Structure G.1 Introduction G.1.1 The Project Work Breakdown Structure (WBS) is a key element of project management. The purpose of a WBS is to divide
More informationGeneral aviation & Business System Level Applications and Requirements Electrical Technologies for the Aviation of the Future Europe-Japan Symposium
General aviation & Business System Level Applications and Requirements Electrical Technologies for the Aviation of the Future Europe-Japan Symposium 26 March 2015 2015 MITSUBISHI HEAVY INDUSTRIES, LTD.
More informationRevision history. Version Date Action. 1.0 Oct 1, 2015 Initial release. Moonspike - Feasibility Study - October 2015 - Page 1 of 35
Revision history Version Date Action 1.0 Oct 1, 2015 Initial release Moonspike - Feasibility Study - October 2015 - Page 1 of 35 1 Table of Contents 1 Table of Contents... 2 2 Acronyms & Terms... 3 3 Document
More informationSpaceLoft XL Sub-Orbital Launch Vehicle
SpaceLoft XL Sub-Orbital Launch Vehicle The SpaceLoft XL is UP Aerospace s workhorse space launch vehicle -- ideal for significant-size payloads and multiple, simultaneous-customer operations. SpaceLoft
More information1.(6pts) Find symmetric equations of the line L passing through the point (2, 5, 1) and perpendicular to the plane x + 3y z = 9.
.(6pts Find symmetric equations of the line L passing through the point (, 5, and perpendicular to the plane x + 3y z = 9. (a x = y + 5 3 = z (b x (c (x = ( 5(y 3 = z + (d x (e (x + 3(y 3 (z = 9 = y 3
More informationSpacecraft Dynamics and Control. An Introduction
Brochure More information from http://www.researchandmarkets.com/reports/2328050/ Spacecraft Dynamics and Control. An Introduction Description: Provides the basics of spacecraft orbital dynamics plus attitude
More informationDEOS. Deutsche Orbitale Servicing Mission. The In-flight Technology Demonstration of Germany s Robotics Approach to Service Satellites
DEOS Deutsche Orbitale Servicing Mission The In-flight Technology Demonstration of Germany s Robotics Approach to Service Satellites B. Sommer, K. Landzettel, T. Wolf, D. Reintsema, German Aerospace Center
More informationPROBLEM SET. Practice Problems for Exam #1. Math 2350, Fall 2004. Sept. 30, 2004 ANSWERS
PROBLEM SET Practice Problems for Exam #1 Math 350, Fall 004 Sept. 30, 004 ANSWERS i Problem 1. The position vector of a particle is given by Rt) = t, t, t 3 ). Find the velocity and acceleration vectors
More informationQuest- 1 Satellite Functional Description
Quest- 1 Satellite Functional Description Overview The Quest- 1 Satellite is based on the CubeSat Standard that measures 10 cm x 10 cm x 10 cm and weighs less than 1.33 kilograms. The Quest- 1 Satellite
More informationThe Space Shuttle: Teacher s Guide
The Space Shuttle: Teacher s Guide Grade Level: 6-8 Curriculum Focus: Astronomy/Space Lesson Duration: Two class periods Program Description This video, divided into four segments, explores scientists'
More informationOrbital Mechanics and Space Geometry
Orbital Mechanics and Space Geometry AERO4701 Space Engineering 3 Week 2 Overview First Hour Co-ordinate Systems and Frames of Reference (Review) Kepler s equations, Orbital Elements Second Hour Orbit
More informationIodine RF Ion Thruster Development Busek Co. Inc. Vlad Hruby PhD, President
Iodine RF Ion Thruster Development Busek Co. Inc. Vlad Hruby PhD, President Mike Tsay PhD busek.com 2015 Busek Co. Inc. All Rights Reserved. Iodine RF Ion Thruster Development Status Briefing NASA NRA
More informationSTEREO Guidance & Control
STEREO Guidance & Control J. Courtney Ray J.C.Ray@jhuapl.edu J. C. Ray 98/11/19 1 STEREO G&C Requirements Baseline System Software Some Analysis J. C. Ray 98/11/19 2 G&C Requirements - Drivers Spacecraft
More informationSection 4: The Basics of Satellite Orbits
Section 4: The Basics of Satellite Orbits MOTION IN SPACE VS. MOTION IN THE ATMOSPHERE The motion of objects in the atmosphere differs in three important ways from the motion of objects in space. First,
More informationAn inertial haptic interface for robotic applications
An inertial haptic interface for robotic applications Students: Andrea Cirillo Pasquale Cirillo Advisor: Ing. Salvatore Pirozzi Altera Innovate Italy Design Contest 2012 Objective Build a Low Cost Interface
More informationSatellite Telemetry, Tracking and Control Subsystems
Satellite Telemetry, Tracking and Control Subsystems Col John E. Keesee 1 Overview The telemetry, tracking and control subsystem provides vital communication to and from the spacecraft TT&C is the only
More informationGlobal Avionics Training Specialists, LLC.
Global Avionics Training Specialists, LLC. PRIMUS 2000/DORNIER 328 JET INTEGRATED AVIONICS SYSTEM LINE MAINTENANCE FAMILIARIZATION COURSE SYLLABUS I. INTRODUCTION A. SYSTEM DESCRIPTION The PRIMUS 2000
More informationFluid Mechanics Prof. S. K. Som Department of Mechanical Engineering Indian Institute of Technology, Kharagpur
Fluid Mechanics Prof. S. K. Som Department of Mechanical Engineering Indian Institute of Technology, Kharagpur Lecture - 20 Conservation Equations in Fluid Flow Part VIII Good morning. I welcome you all
More informationState Newton's second law of motion for a particle, defining carefully each term used.
5 Question 1. [Marks 28] An unmarked police car P is, travelling at the legal speed limit, v P, on a straight section of highway. At time t = 0, the police car is overtaken by a car C, which is speeding
More informationBehavioral Animation Simulation of Flocking Birds
Behavioral Animation Simulation of Flocking Birds Autonomous characters determine their actions Simulating the paths of individuals in: flocks of birds, schools of fish, herds of animals crowd scenes 1.
More informationNanosat 4 Competition
Nanosat 4 Competition NMSUSat2 Team New Mexico State University College of Engineering Presented by Jeremy Bruggemann Topics Competition Overview Mission Overview Design Concept Tests and Analyses Hardware
More informationIN-FLIGHT CALIBRATION OF THE MICROSCOPE SPACE MISSION INSTRUMENT: DEVELOPMENT OF THE SIMULATOR
SF2A 2011 G. Alecian, K. Belkacem, R. Samadi and D. Valls-Gabaud (eds) IN-FLIGHT CALIBRATION OF THE MICROSCOPE SPACE MISSION INSTRUMENT: DEVELOPMENT OF THE SIMULATOR E. Hardy 1, A. Levy 1, G. Métris 2,
More informationExamination Space Missions and Applications I (AE2103) Faculty of Aerospace Engineering Delft University of Technology SAMPLE EXAM
Examination Space Missions and Applications I AE2103 Faculty of Aerospace Engineering Delft University of Technology SAMPLE EXAM Please read these instructions first: This are a series of multiple-choice
More informationROYAL CANADIAN AIR CADETS PROFICIENCY LEVEL TWO INSTRUCTIONAL GUIDE SECTION 6 EO C240.03 IDENTIFY PARTS OF A ROCKET PREPARATION
ROYAL CANADIAN AIR CADETS PROFICIENCY LEVEL TWO INSTRUCTIONAL GUIDE SECTION 6 EO C240.03 IDENTIFY PARTS OF A ROCKET Total Time: 30 min PREPARATION PRE-LESSON INSTRUCTIONS Resources needed for the delivery
More informationOrbital Mechanics. Orbital Mechanics. Principles of Space Systems Design. 2001 David L. Akin - All rights reserved
Energy and velocity in orbit Elliptical orbit parameters Orbital elements Coplanar orbital transfers Noncoplanar transfers Time and flight path angle as a function of orbital position Relative orbital
More informationG U I D E T O A P P L I E D O R B I T A L M E C H A N I C S F O R K E R B A L S P A C E P R O G R A M
G U I D E T O A P P L I E D O R B I T A L M E C H A N I C S F O R K E R B A L S P A C E P R O G R A M CONTENTS Foreword... 2 Forces... 3 Circular Orbits... 8 Energy... 10 Angular Momentum... 13 FOREWORD
More informationINDEPENDENT VERIFICATION AND VALIDATION OF EMBEDDED SOFTWARE
PREFERRED RELIABILITY PRACTICES PRACTICE NO. PD-ED-1228 PAGE 1 OF 6 INDEPENDENT VERIFICATION AND VALIDATION OF EMBEDDED SOFTWARE Practice: To produce high quality, reliable software, use Independent Verification
More informationFlight and Orbital Mechanics
Flight and Orbital Mechanics Lecture slides Challenge the future 1 Material for exam: this presentation (i.e., no material from text book). Sun-synchronous orbit: used for a variety of earth-observing
More informationLongitudinal and lateral dynamics
Longitudinal and lateral dynamics Lecturer dr. Arunas Tautkus Kaunas University of technology Powering the Future With Zero Emission and Human Powered Vehicles Terrassa 2011 1 Content of lecture Basic
More informationAIRCRAFT WORK BREAKDOWN STRUCTURE (WBS) LEVELS (FROM MILITARY SPECIFICATION 881)
Appendix C AIRCRAFT WORK BREAKDOWN STRUCTURE (WBS) LEVELS (FROM MILITARY SPECIFICATION 881) Level 1 Level 2 Level 3 Aircraft System Air Vehicle (AV) System Engineering/ Program Management Airframe Propulsion
More informationA MONTE CARLO DISPERSION ANALYSIS OF A ROCKET FLIGHT SIMULATION SOFTWARE
A MONTE CARLO DISPERSION ANALYSIS OF A ROCKET FLIGHT SIMULATION SOFTWARE F. SAGHAFI, M. KHALILIDELSHAD Department of Aerospace Engineering Sharif University of Technology E-mail: saghafi@sharif.edu Tel/Fax:
More informationIV. Rocket Propulsion Systems. A. Overview
IV. Rocket Propulsion Systems A. Overview by J. M. Seitzman for AE 4451 Jet and Rocket Propulsion Seitzman Rocket Overview-1 Rocket Definition Rocket Device that provides thrust to a vehicle by accelerating
More informationAerospace Engineering: Space Stream Overview
Aerospace Engineering: Space Stream Overview Dept. of Aerospace Engineering Ryerson University Winter 2011 Department of Aerospace Engineering 1 The Space-stream at a Glance Builds on strong aerospace
More informationUSE OF SCILAB FOR SPACE MISSION ANALYSIS AND FLIGHT DYNAMICS ACTIVITIES
USE OF SCILAB FOR SPACE MISSION ANALYSIS AND FLIGHT DYNAMICS ACTIVITIES Thierry Martin CNES Scilabtec 09 Use of Scilab for space mission analysis Page 1 Use of Scilab in CNES Scilab is now widely used
More informationSpacecraft Power Systems
Spacecraft Power Systems AOE 4065 Space Design Refs: SMAD Chap 11.4, G&F Chap 10, F&S Chap 11, P&M Chap 6 Electrical Power Subsystem (EPS) Functions Supply electrical power to spacecraft loads Control
More informationTechnologies for Re-entry Vehicles. SHEFEX and REX FreeFlyer, DLR s Re-Entry Program. Hendrik Weihs. Folie 1. Vortrag > Autor > Dokumentname > Datum
Technologies for Re-entry Vehicles SHEFEX and REX FreeFlyer, DLR s Re-Entry Program Hendrik Weihs Folie 1 DLR`s Re-Entry Program, Why? Re-entry or return technology respectively, is a strategic key competence
More informationSpacecraft Power for Cassini
NASA Fact Sheet Spacecraft Power for Cassini Cassini s electrical power source Radioisotope Thermoelectric Generators (RTGs) have provided electrical power for some of the U.S. space program s greatest
More informationLecture 8 : Dynamic Stability
Lecture 8 : Dynamic Stability Or what happens to small disturbances about a trim condition 1.0 : Dynamic Stability Static stability refers to the tendency of the aircraft to counter a disturbance. Dynamic
More informationAn Analysis and a Historical Review of the Apollo Program Lunar Module Touchdown Dynamics
NASA/SP-2013-605 An Analysis and a Historical Review of the Apollo Program Lunar Module Touchdown Dynamics George A. Zupp, PhD Engineering Directorate, Retired Structural Engineering Division NASA Johnson
More informationLecture L5 - Other Coordinate Systems
S. Widnall, J. Peraire 16.07 Dynamics Fall 008 Version.0 Lecture L5 - Other Coordinate Systems In this lecture, we will look at some other common systems of coordinates. We will present polar coordinates
More informationHow Rockets Work Newton s Laws of Motion
How Rockets Work Whether flying a small model rocket or launching a giant cargo rocket to Mars, the principles of how rockets work are exactly the same. Understanding and applying these principles means
More informationdate: 20th December 2000 issue 1 - revision 0 page 1 Findings,Recommendations and Conclusions
page 1 Findings,Recommendations and Conclusions page 2 page 3 T A B L E O F C O N T E N T S 1 Introduction...4 2 Identification of the Problem...5 3 Findings...6 4 Conclusions and Recommendations...7 5
More informationEN4 Dynamics and Vibrations. Design Project. Orbital Design for a Lunar Impact Mission. Synopsis
EN4 Dynamics and Vibrations Design Project Orbital Design for a Lunar Impact Mission Synopsis NASA has identified a need for a low-cost mission to launch a satellite that will impact the moon. You will
More informationHomework #1 Solutions
MAT 303 Spring 203 Homework # Solutions Problems Section.:, 4, 6, 34, 40 Section.2:, 4, 8, 30, 42 Section.4:, 2, 3, 4, 8, 22, 24, 46... Verify that y = x 3 + 7 is a solution to y = 3x 2. Solution: From
More informationConfiguration Software User Instruction
Configuration Software User Instruction V1.0 Index Index... 1 Configuration Software... 1 1 Install Driver...1 2 Install Configuration Software...1 How to use Baseflight Configurator...1 Flight Controller
More informationThe Design and Implementation of a Quadrotor Flight Controller Using the QUEST Algorithm
The Design and Implementation of a Quadrotor Flight Controller Using the QUEST Algorithm Jacob Oursland Department of Mathematics and Computer Science South Dakota School of Mines and Technology Rapid
More informationTo Uranus on Solar Power and Batteries
To Uranus on Solar Power and Batteries Mark Hofstadter Jet Propulsion Laboratory, California Institute of Technology Report to OPAG, 9 March 2009 Bethesda, Maryland Voyager 1986 Hubble 1998 (Karkoschka)
More informationLecture L6 - Intrinsic Coordinates
S. Widnall, J. Peraire 16.07 Dynamics Fall 2009 Version 2.0 Lecture L6 - Intrinsic Coordinates In lecture L4, we introduced the position, velocity and acceleration vectors and referred them to a fixed
More informationUSING MS EXCEL FOR DATA ANALYSIS AND SIMULATION
USING MS EXCEL FOR DATA ANALYSIS AND SIMULATION Ian Cooper School of Physics The University of Sydney i.cooper@physics.usyd.edu.au Introduction The numerical calculations performed by scientists and engineers
More informationVTOL UAV. Design of the On-Board Flight Control Electronics of an Unmanned Aerial Vehicle. Árvai László, ZMNE. Tavaszi Szél 2012 ÁRVAI LÁSZLÓ, ZMNE
Design of the On-Board Flight Control Electronics of an Unmanned Aerial Vehicle Árvai László, ZMNE Contents Fejezet Témakör 1. Features of On-Board Electronics 2. Modularity 3. Functional block schematics,
More informationProgress of MoonLITE Penetrators
Progress of MoonLITE Penetrators Rob Gowen on behalf of the UK Penetrator Consortium Brief overview Status Phase-A A elements Impact Trial Collaboration Contents MoonLITE Mission A UK led science mission
More informationSittiporn Channumsin Co-authors
28 Oct 2014 Space Glasgow Research Conference Sittiporn Channumsin Sittiporn Channumsin Co-authors S. Channumsin Outline Background Objective The model Simulation Results Conclusion and Future work 2 Space
More informationAerospace Information Technology Topics for Internships and Bachelor s and Master s Theses
Aerospace Information Technology s for Internships and Bachelor s and Master s Theses Version Nov. 2014 The Chair of Aerospace Information Technology addresses several research topics in the area of: Avionic
More informationThis page left blank for double-sided printing
This page left blank for double-sided printing A COMPARISON OF LUNAR LANDING TRAJECTORY STRATEGIES USING NUMERICAL SIMULATIONS Mike Loucks 1, John Carrico 2, Timothy Carrico 2, Chuck Deiterich 3 1 Space
More informationRobotics & Automation
Robotics & Automation Levels: Grades 10-12 Units of Credit: 1.0 CIP Code: 21.0117 Core Code: 38-01-00-00-130 Prerequisite: None Skill Test: 612 COURSE DESCRIPTION Robotics & Automation is a lab-based,
More informationNAVAL POSTGRADUATE SCHOOL THESIS
NAVAL POSTGRADUATE SCHOOL MONTEREY, CALIFORNIA THESIS DIDO OPTIMIZATION OF A LUNAR LANDING TRAJECTORY WITH RESPECT TO AUTONOMOUS LANDING HAZARD AVOIDANCE TECHNOLOGY by Michael R. Francis September 2009
More informationOrbital Mechanics. Angular Momentum
Orbital Mechanics The objects that orbit earth have only a few forces acting on them, the largest being the gravitational pull from the earth. The trajectories that satellites or rockets follow are largely
More informationMidterm Solutions. mvr = ω f (I wheel + I bullet ) = ω f 2 MR2 + mr 2 ) ω f = v R. 1 + M 2m
Midterm Solutions I) A bullet of mass m moving at horizontal velocity v strikes and sticks to the rim of a wheel a solid disc) of mass M, radius R, anchored at its center but free to rotate i) Which of
More informationHybridSail. Hybrid Solar Sails for Active Debris Removal Final Report
HybridSail Hybrid Solar Sails for Active Debris Removal Final Report Authors: Lourens Visagie (1), Theodoros Theodorou (1) Affiliation: 1. Surrey Space Centre - University of Surrey ACT Researchers: Leopold
More informationSIX DEGREE-OF-FREEDOM MODELING OF AN UNINHABITED AERIAL VEHICLE. A thesis presented to. the faculty of
SIX DEGREE-OF-FREEDOM MODELING OF AN UNINHABITED AERIAL VEHICLE A thesis presented to the faculty of the Russ College of Engineering and Technology of Ohio University In partial fulfillment of the requirement
More informationU g CS for DJI Phantom 2 Vision+, Phantom 3 and Inspire 1
U g CS for DJI Phantom 2 Vision+, Phantom 3 and Inspire 1 Copyright 2015, Smart Projects Holdings Ltd Contents Preface... 2 Drone connection and first run... 2 Before you begin... 2 First run... 2 Connecting
More informationRegolith-Derived Heat Shield for Planetary Body Entry and Descent System with In-Situ Fabrication
Regolith-Derived Heat Shield for Planetary Body Entry and Descent System with In-Situ Fabrication Michael D. Hogue, NASA Kennedy Space Center Robert P. Mueller, NASA Kennedy Space Center Laurent Sibille,
More informationRobotic Pre-Cursor Contribution to Human NEA Mission. H. Kuninaka JSPEC/JAXA
Robotic Pre-Cursor Contribution to Human NEA Mission H. Kuninaka JSPEC/JAXA Asteroid Explorer Hayabusa Dimensions 1.0m x 1.6m x 1.1m Weight : 380kg(Dry) Chemical Fuel 70kg Xe Propellant 60kg Total 510kg
More informationLecture L29-3D Rigid Body Dynamics
J. Peraire, S. Widnall 16.07 Dynamics Fall 2009 Version 2.0 Lecture L29-3D Rigid Body Dynamics 3D Rigid Body Dynamics: Euler Angles The difficulty of describing the positions of the body-fixed axis of
More informationOrbits of the Lennard-Jones Potential
Orbits of the Lennard-Jones Potential Prashanth S. Venkataram July 28, 2012 1 Introduction The Lennard-Jones potential describes weak interactions between neutral atoms and molecules. Unlike the potentials
More informationMODELLING A SATELLITE CONTROL SYSTEM SIMULATOR
National nstitute for Space Research NPE Space Mechanics and Control Division DMC São José dos Campos, SP, Brasil MODELLNG A SATELLTE CONTROL SYSTEM SMULATOR Luiz C Gadelha Souza gadelha@dem.inpe.br rd
More informationCAT VIII WORKING DRAFT
Category VIII Military Aircraft and Associated Equipment A. End Items, Systems, Accessories, Attachments, Equipment, Parts and Components 1. Fighter, bomber, attack, or specialized fixed or rotary wing
More informationSatellite Mission Analysis
CARLETON UNIVERSITY SPACECRAFT DESIGN PROJECT 2004 FINAL DESIGN REPORT Satellite Mission Analysis FDR Reference Code: FDR-SAT-2004-3.2.A Team/Group: Satellite Mission Analysis Date of Submission: April
More informationVideo Transcript for Archival Research Catalog (ARC) Identifier 45017
The Eagle Has Landed 1969 Ed Aldrin: Contact light. Okay. Engine stop. ACA out of detent. Mode control both auto. Descent engine command override off. Engine alarm off. 413 is in. Capsule Communicator
More informationMP2128 3X MicroPilot's. Triple Redundant UAV Autopilot
MP2128 3X MicroPilot's Triple Redundant UAV Autopilot Triple redundancy (3X) gives autopilot technology the reliability necessary to safely carry out sensitive flight missions and transport valuable payloads.
More informationDepartment of Aeronautics and Astronautics School of Engineering Massachusetts Institute of Technology. Graduate Program (S.M., Ph.D., Sc.D.
Department of Aeronautics and Astronautics School of Engineering Massachusetts Institute of Technology Graduate Program (S.M., Ph.D., Sc.D.) Field: Space Propulsion Date: October 15, 2013 1. Introduction
More informationK.Prasanna NIT Rourkela,India Summer Internship NUS
K.Prasanna NIT Rourkela,India Summer Internship NUS LOCALIZATION Vehicle localization is an important topic as it finds its application in a multitude of fields like autonomous navigation and tracking
More informationLeveraging Performance-Based Cost Modeling For Earth Observation Missions
Leveraging Performance-Based Cost Modeling For Earth Observation Missions REINVENTING SPACE Anthony Shao University of Southern California Dept. Astronautical Engineering ashao@smad.com, 310-219-2700 http://www.smad.com/reinventingspace.html
More informationCONTRIBUTIONS TO THE AUTOMATIC CONTROL OF AERIAL VEHICLES
1 / 23 CONTRIBUTIONS TO THE AUTOMATIC CONTROL OF AERIAL VEHICLES MINH DUC HUA 1 1 INRIA Sophia Antipolis, AROBAS team I3S-CNRS Sophia Antipolis, CONDOR team Project ANR SCUAV Supervisors: Pascal MORIN,
More informationDoes currently available technology have the capacity to facilitate a manned mission to Mars?
Furze Platt Senior School Does currently available technology have the capacity to facilitate a manned mission to Mars? Daniel Messias Date: 8/03/2015 Candidate Number: 7158 Centre Number: 51519 Contents
More informationHalliday, Resnick & Walker Chapter 13. Gravitation. Physics 1A PHYS1121 Professor Michael Burton
Halliday, Resnick & Walker Chapter 13 Gravitation Physics 1A PHYS1121 Professor Michael Burton II_A2: Planetary Orbits in the Solar System + Galaxy Interactions (You Tube) 21 seconds 13-1 Newton's Law
More information