# The Science of Flight

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1 The Science of Flight This resource pack is a collaborative effort between the Royal Air Force Museum, Cosford and St. Patrick s Catholic Primary School, Wellington. Supported by MLA West Midlands. CATHOLIC PRIMARY SCHOOL

2 Introduction Thank you for booking a visit to the Royal Air Force Museum Cosford. During your visit to the Museum your school will take part in a Science of Flight workshop which has direct links to the National Curriculum. This workshop is aimed at children in Key Stage 2. It can be used to help teach the science of forces and motion and the skills of scientific enquiry. There are also links to the ICT and Numeracy curriculum. Children will benefit most from the session if they have some existing knowledge of Physical processes. Whilst at the Museum your group will build and test their own gliders and rockets. This pack has been designed to complement your visit and builds upon the contents of our workshops. The resources it contains can be used both before and after your visit to the Museum and there is progression from one lesson to the next. We hope this pack is helpful to you and that you enjoy your visit to the Royal Air Force Museum Cosford. Forces A Force is a push or a pull. It affects the way things move. Forces can make objects speed up, slow down, stop or change direction. Forces can occur naturally, such as gravity, or they can be produced by people or machines. Friction is a force that appears whenever two things rub against each other. Forces act in particular directions, and they always act in pairs. Whenever an object pushes another, the object also pushes back. If these forces are balanced, as in a floating object, then the object at rest will stay still. If the forces are unbalanced, the object can speed up, slow down or change direction. Air resistance, like friction, is a force which resists movement. Air resistance can therefore affect the speed of a moving object. The example of a falling parachute demonstrates the effects of air resistance. The reason a parachute can protect a sky diver is that air resistance pushes up against the force of gravity. The bigger the parachute, the greater the force of air resistance.

4 Helicopters: The first helicopter flight was made in 1907, but the idea of a flying machine that spins had been around for a very long time. The first person to design a helicopter was a famous Italian called Leonardo da Vinci. Da Vinci was a genius and designed his helicopter in the 15 th century! Unfortunately, he never built or tested his design. Just like an aeroplane, helicopters need a lifting force to get them off the ground. On an aeroplane, the wing has to travel through the air to create lift. On a helicopter the lift is created when the rotor blades spin through the air. For this reason, helicopters are very different to other aircraft, they can take off vertically, hover and fly very slowly in any direction. The first really successful helicopter flew in It was made in Germany and was called the Focke Achgelis. It could fly at heights of over 3, 000 meters and could travel up to 110 kph. Rockets: At the very beginning of the 16 th century a Chinese man, called Wanhu, became the first man to try and fly in a rocket ship. He tied forty-seven rockets to a wooden chair in an attempt to reach the stars! He also had two kites on board his ship to help him glide gently back down to the ground. Unfortunately, we don t know if Wanhu s experiment was a success. After the rockets had been lit there was an enormous bang and he was never seen again! It was not until the 20 th century, 400 years after Wanhu s original test flight, that scientists developed the sorts of rockets that can carry people into space. Werner von Braun and Sergei Korolev were both important scientists in the development of these rockets for the USA and the USSR and in 1961 Yuri Gagarin became the first man to go into space. Rockets are the perfect propulsion system for space travel, because unlike aeroplanes or helicopters they don t need air to work. There are two different types of rocket, liquid-fuelled and solid-fuelled. Hot gases surge out from the tail end of these rockets, moving them forward at great speeds. To stay in orbit around the earth, satellites must be travelling at 18, 000 miles per hour. To escape the earth s gravitational pull they need to reach speeds of 25, 000 miles per hour!

5 Pre visit activities In this section you will find lesson plans for two school based activities. There is progression from one lesson to the next, with the children completing the first investigation before planning and carrying out the next one independently.

6 Falling: Lesson Plan Timescale: 1 hour Location: School Resources: A feather, a paperclip, a piece of A4 paper, a piece of folded A4 paper, a stopwatch. Learning objectives: Sc1: Scientific enquiry 1b) To realise that it is important to test ideas using evidence from observation and measurement. 2d) Pupils should be taught to make a fair test or comparison by changing one factor and observing or measuring the effect while keeping other factors the same. 2g) To check observations and measurements by repeating them where appropriate. 2h) To be able to use a wide range of methods, including tables, to communicate data in an appropriate and systematic manner. 2j) To use observations, measurements or other data to draw conclusions. 2k) To decide whether these conclusions agree with any predictions made. Sc4: Forces and Motion 2b) To know that objects are pulled downwards because of the gravitational attraction between them and the earth. 2c) To understand that air resistance is a force that slows moving objects. Ma4: Handling Data 2b) To construct and interpret tables for grouped discrete data. Introduction / Teacher information: This activity should be used to introduce the children to the notions of gravity and air resistance. Each of the objects falls towards the ground because of the gravitational pull of the Earth. Gravity does not make heavier objects fall faster than lighter objects, but air resistance can make a big difference to the speeds at which an object falls. This was demonstrated by the NASA astronaut David Scott when he visited the moon in He dropped a hammer and a feather at the same time and both fell at exactly the same speed because there is no air on the moon. A video of this experiment can be found at On Earth, objects with a larger surface area, like the feather and the piece of paper, fall more slowly because they create a lot of air resistance as they fall. Therefore, the folded paper and the paperclip will fall more quickly because they create less air resistance. Main Activity: Using the partially completed investigation sheet, children should test how long it takes for the four different objects to fall to the ground. They should also observe the way in which they fall. They can then complete the results table and graph. Please ensure the children are in a safe environment when completing their investigation. Plenary: What have we learnt? Was it fair, reliable and accurate? (Evaluation) What else could we test? E.g. Test the effects of wind on the test, using a fan.

7 Falling investigation The Question: Do different objects fall to the ground at different speeds? Compare the way in which they fall. Prediction: Equipment : A feather, a paperclip, a piece of A4 paper, a piece of folded A4 paper, a stopwatch. Fair Testing: I can ensure that this test is fair by only changing one variable, which is the object we choose to drop. All other variables I shall keep the same, the stopwatch and the height from which we drop the objects. Method: Making sure that you drop your objects from exactly the same height, use the stopwatch to time how long it takes each object to reach the ground. To ensure that the test is reliable we will time each object 3 times. Results: Object Time 1 (seconds) Feather Time 2 (seconds) Time 3 (seconds) Average (Add all 3 results and divide by 3) Paperclip A4 paper Folded A4 paper

8 Describe what happens when each of the objects is dropped: Feather: Paperclip: A4 paper: Folded A4 paper: Graph: Complete the following graph to show how long it took for each object to fall to the ground. A graph to show how long it took for different objects to fall to the ground. 5 4 Time in seconds Feather Paperclip A4 paper Folded A4 paper Object Conclusion: What have you discovered? Can you give a scientific reason for what you have observed?

10 Spinners: Planning Grid Question to be investigated What will we change? (variable) What will we measure? What will we keep the same? What will we keep the same? What will we keep the same? What will we keep the same?

11 Spinners: Investigation The Question: Does the length of the rotor blade affect the speed at which a spinner falls? Prediction: Equipment: Spinners template, a stopwatch, a paperclip. Fair Testing: I can ensure that this test is fair by only changing one variable, which is the. All other variables I shall keep the same, the stopwatch, the paperclip, and the. Method: Making sure that you drop your spinners from exactly the same height, use the stopwatch to time how long it takes each spinner to reach the ground. To ensure that the test is reliable we will time each spinner 3 times. Results: Complete the following results table and create a graph to display your results. Length of rotor blade Time 1 (seconds) Time 2 (seconds) Time 3 (seconds) Average (Add all 3 results and divide by 3)

12 Conclusion: What have you discovered? Can you give a scientific reason for what you have observed? Evaluation: Do you think your test was fair? What would you change if you could do the test again?

13 Spinner templates: Instructions Use your templates to make helicopters, following these instructions. 1. Cut round the four outside lines of your template. 2. Cut along the solid line dividing the two RAF Museum logos. These will make your rotor blades. 3. Fold the two blades in opposite directions, along the dotted lines. 4. Cut along the two remaining solid lines on the template. 5. Fold along the dotted lines to make a T shaped body for your helicopter. 6. Fasten the body at the bottom with a paper clip. This will help to weigh the bottom end down so it flies properly. 7. Now test your helicopter to make sure it flies. You will need to launch your helicopters from a safe height. Ask your teacher for a good place to launch the helicopters from.

14 Spinner templates

15 Royal Air Force Museum Cosford In this section you will find details of the Science of Flight workshops you will enjoy at the Royal Air Force Museum Cosford. Also included are details of our interactive Fun n Flight gallery, with a Key Stage 2 quiz, where children can learn more about the Science of Flight. Please note, this section includes a design sheet for children to design their rockets before they visit the Museum. Children should bring their designs with them to the Royal Air Force Museum Cosford.

16 Gliders: Lesson Plan Timescale: 45 minutes Location: RAF Museum Resources: Instruction sheets; Paper; Sticky tape; Launcher; Extension leads. Learning objectives: Sc4: Forces and Motion 2b) To know that objects are pulled downwards because of the gravitational attraction between them and the earth and to understand that this rate of fall can be slowed by the introduction of wings; 2c) To understand that air resistance is a force that slows moving objects. Introduction: Welcome the children; Briefly explain the science of flight in relation to gliders / forces and motion; Demonstrate how the glider launcher works; Instruct the children in the safe way of working and operating the launcher. Main Activity: The children follow four glider designs or they can create their own design; Their goal is to find the glider that flies the furthest; At the end of the session we will have a fly off. Plenary: What have we learnt.

17 Rockets: Lesson Plan Timescale: 45 minutes Location: RAF Museum Resources: Paper, card, scissors, glue, Sticky tape, rocket launchers, foot pump, stopwatch Learning objectives: Sc4: Physical processes 2b) To know that objects are pulled downwards because of the gravitational attraction between them and the earth. 2c) To understand that air resistance is a force that slows moving objects. 2d) To understand that when objects are pushed or pulled, an opposing push or pull is felt. DT1: Developing, planning and communicating ideas 1a) Pupils should generate ideas for products after thinking about who will use them and what they will be used for. Ma2: Number 4c) To estimate answers by approximating and checking that their results are reasonable. Introduction: Welcome the children; Briefly explain the science of flight in relation to rockets / forces and motion; Demonstrate to the children how to make the basic rocket. Main Activity: The children make a rocket that launches from the rocket launcher; Demonstrate how the rocket launcher works; Instruct the children in the safe way of working and operating the launcher; The children fire the rocket from the launcher; Children observe the flight of the rockets and that they show no glide ; Discuss how the rockets rate of fall can be slowed by the introduction of wings, making the rockets glide on descent, referring to gliders session; Talk to children about their rocket designs and ask them to estimate how long it will stay airborne; The children modify a rocket to add wings / tail / fins etc; At the end of the session we will have a fly off ; Their goal is to find the rocket that glides the best. Plenary: (Ideas for follow up lessons in school). What have we learnt. Was it fair, reliable and accurate? (Evaluation) What else could we test?

18 Rockets: Design During your visit to the Royal Air Force Museum Cosford you will have the chance to build and fire your own rocket. Using what you have already learned about flight and air resistance, you should use this sheet to design your own rocket. The fuselage of the rocket is shown already and cannot be changed. At the Museum we will be looking at which type of rocket stays airborne the longest, so you will need to design different elements, like wings and a tail, to help it glide slowly back to earth. You may also want to add fins, these are used to help stabilise rockets, just like the feathers on a dart. You will have card, paper and correx available to build your rocket on the day. Can you predict what type of rocket design will be the most effective? You may want to think about what size wings will work best or whether the position they are in will make a difference. Fuselage Nose Cone

19 Rockets: Result Sheet Name Estimated time Actual time

20 Rockets: Result Sheet Name Estimated time Actual time

21 Post visit activity In this section you will find a lesson plan for a post visit, school based activity which builds upon the Rocket workshop from the Royal Air Force Museum Cosford.

22 Rockets: Lesson Plan (2) Timescale: 2 hours Location: School Resources: Paper, card, scissors, glue, stopwatch Learning objectives: Sc1: Scientific enquiry 1b) To realise that it is important to test ideas using evidence from observation and measurement. 2f) To make systematic observations and measurements, including the use of ICT for datalogging. 2g) To check observations and measurements by repeating them where appropriate. 2h) To be able to use a wide range of methods, including tables, to communicate data in an appropriate and systematic manner. Sc4: Physical processes 2b) To know that objects are pulled downwards because of the gravitational attraction between them and the earth. 2c) To understand that air resistance is a force that slows moving objects. DT1: Developing, planning and communicating ideas 1a) Pupils should be taught to develop ideas 2a) Suggest alternative ways of making products if the first attempt fails Introduction: Talk to the children about the rockets workshop at the Royal Air Force Museum Cosford. Remind them of the most successful designs and remind them what they have previously learnt about the science of flight, both in school and at the Museum. Explain that the children will be testing their rocket designs, making modifications in a systematic way to obtain better results. Main Activity: Ask the children to re-launch their rockets by throwing them like gliders or by blowing them off a piece of newspaper rolled into a tight tube and record how long it takes for their rockets to glide to the ground. Ask the children to modify their own rockets, using a design sheet, to try and make them stay airborne for longer. The children should then modify their rockets and re-launch them. They can then complete the results table and graph provided. Please ensure the children are in a safe environment when completing their investigation. Plenary: What have we learnt. What else could we test?

23 Rockets: Modified Design Using what you have already learned about flight and air resistance, you should use this sheet to modify your rocket design. The fuselage of the rocket is shown already. Fuselage Nose Cone

24 Rockets: Recording Sheet Results: Rocket Time 1 (seconds) Original Design Time 2 (seconds) Time 3 (seconds) Average (Add all 3 results and divide by 3) Modified Design Graph: Complete the following graph to show the average time it took for each glider to reach the ground. A graph to show how long it took for a glider to reach the ground Time in seconds Original Design Modified Design Rocket type

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