07a12101-introduction-to-aerospace-engineering

Set No. 1

Code No: 07A12101

I B.Tech Supplimentary Examinations, Aug/Sep 2008 INTRODUCTION TO AEROSPACE ENGINEERING (Aeronautical Engineering) Time: 3 hours Max Marks: 80 Answer any FIVE Questions All Questions carry equal marks ⋆⋆⋆⋆⋆ 1. Describe about The Aeronautical Triangle - Langley, The Wrights and Glenn Curtiss Comment on their contributions. [16] 2. Explain with neat diagrams the different types of power operated control systems. [16] 3. (a) Why is it difficult to find out the exact height of the atmosphere using a pressure altimeter? (b) What is meant by the density of air? How it various with altitude?

[8+8]

4. (a) What is meant by the term ultimate load? (b) Define Fail safe and Safe Life design.

[10+6]

5. (a) Mention the merits of turbojet engine. (b) Mention various aircrafts using the power plants of jet and piston engines. (c) Name the aircrafts having turbo shaft engines.

[6+6+4]

6. (a) Explain the term “tail heavy”. (b) What is meant by an unstable movement of the centre of pressure. (c) Variations of lift along the wing span.

[6+6+4]

7. With the series of diagrams, explain the static and dynamic responses of an aircraft after it has been disturbed by a small force. [16] 8. Describe the Kepler’s laws of planetary motion. ⋆⋆⋆⋆⋆

1 of 1

[16]

Set No. 2

Code No: 07A12101

I B.Tech Supplimentary Examinations, Aug/Sep 2008 INTRODUCTION TO AEROSPACE ENGINEERING (Aeronautical Engineering) Time: 3 hours Max Marks: 80 Answer any FIVE Questions All Questions carry equal marks ⋆⋆⋆⋆⋆ 1. (a) Explain the features of swept back wing? (b) Write the advantage swept front wing?

[8+8]

2. (a) In a power operated control system how is the aerodynamic load of the control surface transmitted to the pilot? (b) Explain about the hydraulic actuator.

[8+8]

3. (a) What are the differences between the “troposphere” and the “stratosphere”. (b) What is aspect ratio and what is its significance?

[8+8]

4. Explain the functions of: (a) Elevator (b) Aileron (c) Rudder.

[6+6+4]

5. Consider a rocket with Kerosine - Oxygen as the fuel - oxidiser combination. The ratio of initial weight before blast off to the final weight at burnout is 5.5. Calculate the burner velocity. [16] 6. Derive a continuity equation for steady fluid flow.

[16]

7. (a) Explain with the aid of a diagram, the four main forces acting on an aeroplane in straight horizontal flight. (b) With the help of diagram, explain yawing, pitching and rolling. 8. Discuss the basic aspects of space vehicle trajectories. ⋆⋆⋆⋆⋆

1 of 1

[8+8] [16]

Set No. 3

Code No: 07A12101

I B.Tech Supplimentary Examinations, Aug/Sep 2008 INTRODUCTION TO AEROSPACE ENGINEERING (Aeronautical Engineering) Time: 3 hours Max Marks: 80 Answer any FIVE Questions All Questions carry equal marks ⋆⋆⋆⋆⋆ 1. (a) Write notes on Montgolfer’s hot-air balloon? (b) Briefly describe the developments in aeronautics between (1832-1910) [8+8] 2. (a) Explain the operation of controllable trim tabs. (b) How does a controllable trim tab differ from a fixed tab?

[8+8]

3. How does the pressure distribution over an aerofoil change as we increase the angle of attack from negative values to beyond the stalling angle? [16] 4. (a) How is a metal wing sealed so it may be used as a fuel tank? (b) Describe the construction of a typical stabilizer for a light airplane. [8+8] 5. Explain the principle and operation of a turbofan engine with sketch.

[16]

6. Derive Bernoull’s equation for incompressible flow.

[16]

7. (a) Explain with the aid of a diagram, the four main forces acting on an aeroplane in straight horizontal flight. (b) With the help of diagram, explain yawing, pitching and rolling.

[8+8]

8. A communications satellite is positioned on a ‘stationery orbit’ over a geographical point on the equator. Calculate the radius of its orbit and its speed. [16] ⋆⋆⋆⋆⋆

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Set No. 4

Code No: 07A12101

I B.Tech Supplimentary Examinations, Aug/Sep 2008 INTRODUCTION TO AEROSPACE ENGINEERING (Aeronautical Engineering) Time: 3 hours Max Marks: 80 Answer any FIVE Questions All Questions carry equal marks ⋆⋆⋆⋆⋆ 1. What was the contribution of French man Felix DV Temple in the aero plane Power system. [16] 2. Explain with neat diagrams the different types of power operated control systems. [16] 3. (a) Why is it difficult to do a steep side-slip on a modern aircraft? (b) What are the problems of inverted flight? (c) What are the causes of bumpy weather?

[6+4+6]

4. (a) Write notes on frames and stringers. (b) Illustrate monocoque construction of fuselage with neat sketch.

[8+8]

5. (a) Differentiate between ram jet and turbo jet. (b) Give a detailed description about the operation of ram jet engine.

[6+10]

6. (a) Compare the effect of the drag for a blunt body and a streamlined body with neat sketches. (b) Explain the effect at laminar and turbulent flow over a sphere.

[8+8]

7. (a) What are control tabs? State their uses. (b) How are control surfaces balanced. 8. Discuss the four types of orbits and trajectories in space vehicle. ⋆⋆⋆⋆⋆

1 of 1

[8+8] [16]