# 5 I N T R O D U C T I O N T O A E R O S P A C E T R A N S P O R T A T I O N S Y S T E M S

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• 1. www.studentyogi.com www.studentyogi.com Code No: R05222105 Set No. 1 II B.Tech II Semester Supplimentary Examinations, Aug/Sep 2008 INTRODUCTION TO AEROSPACE TRANSPORTATION SYSTEMS (Aeronautical Engineering) Time: 3 hours Max Marks: 80 Answer any FIVE Questions All Questions carry equal marks 1. What were the principle features of the Wright Flyer. Explain with sketches the lift generated for its sustainable ight. [16] 2. Calculate pressure, density and temperature at an altitude of 13000m in stratosphere. Develop the relationship used. The sea level data is; P = 101325 2, T = 150 , L = 0.0065 K /m. [16] 3. (a) Describe with adequate sketches/diagrams/illustrations, ma jor components of an airplane. What is the use of each component? (b) Explain the construction of its wing in details, considering it to be a two seat light weight, trainer airplane. List the materials of its fabrication. [8+8] 4. (a) Prove that the velocities for minimum power and minimum drag in straight and level ight of airplane can be obtained from the Power vs Velocity plot. (b) An airplane weighs 5000 N and has a wing loading of 600 -2 . If its drag polar is D =0.010 +0.022 L2, determine its velo city for minimum power in straight and level ight. [8+8] 5. (a) You are to plan for adding a small civil trainer airplane for a small ying club in a remote village. Spell out the role and justi cation for the airplane under considerations. (b) What are the steps to be taken for planning the schedule of next ight afresh from station P to station Q, over ying stations A,B and C? Prepare the plans for approval of the authorities. Name such authorities. [8+8] 6. (a) Explain the safety of airplane from the airworthiness of the total components taken as an integrated unit. (b) A uid possesses faster cooling properties at lower altitudes and becomes less e cient at higher altitudes. Provide your reasoning and remedies to the prob- lem. [8+8] 7. Describe an integrated heating system for a pressurized airplane in details. What is the source of heat and pressure in this case. Make use of line diagrams and sketches to bring home your point. What are the categories of aerospace vehicles covered under this system? [8+4+4] 8. (a) What are the requirements of ADF in avionics? Describe with an example. (b) Show with a sketch the layout of the operating system of elevators of an airplane in a Fly-By-Wire control system and explain its functioning. [8+8] 1 of 2 www.studentyogi.com www.studentyogi.com
• 2. www.studentyogi.com www.studentyogi.com Code No: R05222105 Set No. 1 2 of 2 www.studentyogi.com www.studentyogi.com
• 3. www.studentyogi.com www.studentyogi.com Code No: R05222105 Set No. 2 II B.Tech II Semester Supplimentary Examinations, Aug/Sep 2008 INTRODUCTION TO AEROSPACE TRANSPORTATION SYSTEMS (Aeronautical Engineering) Time: 3 hours Max Marks: 80 Answer any FIVE Questions All Questions carry equal marks 1. (a) Describe with some details, the surface transportation systems developed by humans over the ages along with the improvements / superiorities. (b) Compare your ride over a camel back with your ride on a two wheeler pedaled vehicle. Comment on the comfort in both the cases. [8+8] 2. Calculate pressure, density and temperature at an altitude of 13000m in stratosphere. Develop the relationship used. The sea level data is; P = 101325 2, T = 150 , L = 0.0065 K /m. [16] 3. (a) Classify Military airplanes according to the role for which these are designed. What are their distinct features in comparison with a civil airplane? Illustrate with at least one example each say from the inventory of armed forces. Make use of representative sketches. (b) Describe features typical of a single seater airplane for sports / racing use. What should be the speed range of such airplane? [8+8] 4. Consider the drag polar = D0 + L2. Show that the power required to overcome the drag in st. and level ight is a minimum if {CD CL1..5} is a minimum. Hence prove that Lmp = CLmd(3)1/2. Show the complete work out. [16] 5. (a) Describe the requirements of air superiority ghter interceptor for the armed forces. (b) What measures are taken for the checking of cargo at a domestic airport? [8+8] 6. (a) Relate the terms: i. air safety ii. Airworthiness iii. Certi cate of Airworthiness iv. Prevention of air accidents. (b) Describe the speci cations and acceptance testing of an assembly with rubber and metallic seals and lubricating oil, to be carried in ight from Pokhran to Leh. [8+8] 7. What are the requirements of cabin-cooling systems in an aerospace vehicle? De- scribe one method of such air conditioning employed in a space vehicle. Make use of sketches and diagrams to illustrate the answer. [4+12] 1 of 2 www.studentyogi.com www.studentyogi.com
• 4. www.studentyogi.com www.studentyogi.com Code No: R05222105 Set No. 2 8. (a) Explain the SATCOM system of communications in avionics. (b) Illustrate the functioning of an all moving horizontal tail of an airplane in a Fly-By-Wire control system with a detailed layout sketch. [8+8] 2 of 2 www.studentyogi.com www.studentyogi.com
• 5. www.studentyogi.com www.studentyogi.com Code No: R05222105 Set No. 3 II B.Tech II Semester Supplimentary Examinations, Aug/Sep 2008 INTRODUCTION TO AEROSPACE TRANSPORTATION SYSTEMS (Aeronautical Engineering) Time: 3 hours Max Marks: 80 Answer any FIVE Questions All Questions carry equal marks 1. Describe the steps and developments leading to the rst powered ight of heavier than air vehicle. Explain with sketches. [16] 2. Calculate pressure, density and temperature at an altitude of 14000m in stratosphere. Develop the relationship used. The sea level data is; P = 101325 2, T = 150 , L = 0.0065 K /m. [16] 3. (a) Categorize airplanes on the basis of missions for which designed. Provide an example each with illustrations. (b) Consider wing of an all wood airplane. Show the details and resistance to moments experienced by the wing in ight. [8+8] 4. (a) De ne the terms: i. stalling speed ii. wing loading iii. minimum drag condition iv. minimum power condition. Establish their importance in airplane perfor- mance calculations / predictions. 2. If the airplane ies straight and (b) Consider the drag polar D = D0 + L level at a velocity V, Plot the relationship between Power, P and speed, V. Can you locate the velo city for minimum drag on this curve? [8+8] 5. (a) Describe the requirements of air superiority ghter interceptor for the armed forces. (b) What measures are taken for the checking of cargo at a domestic airport? [8+8] 6. (a) De ne the terms: i. air safety, ii. Airworthiness, iii. Certi cate of Airworthiness, iv. Prevention of air accidents. (b) Explain the speci cations and acceptance testing of an assembly with rubber and metallic seals and lubricating oil, to be carried in ight from Pokhran to Leh. [8+8] 1 of 2 www.studentyogi.com www.studentyogi.com
• 6. www.studentyogi.com www.studentyogi.com Code No: R05222105 Set No. 3 7. Explain the requirements of cabin-cooling systems in an aerospace vehicle. Describe the air-cycle cooling system of such air conditioning employed in a space vehicle. Make use of sketches and diagrams to illustrate the answer. [4+12] 8. (a) Explain the role of radio waves in avionics. Discuss the propagation of radio waves as well. (b) Explain the control surfaces and the operations of an airplane with appropriate illustrations. [8+8] 2 of 2 www.studentyogi.com www.studentyogi.com
• 7. www.studentyogi.com www.studentyogi.com Code No: R05222105 Set No. 4 II B.Tech II Semester Supplimentary Examinations, Aug/Sep 2008 INTRODUCTION TO AEROSPACE TRANSPORTATION SYSTEMS (Aeronautical Engineering) Time: 3 hours Max Marks: 80 Answer any FIVE Questions All Questions carry equal marks 1. (a) Describe a two wheeled vehicle, with an external source of power to drive it with illustrations. (b) Explain the e ect of the size of the wheels on the motion and stability of a scooter as seen on the roads in India? [8+8] 2. De ne aerodynamic forces acting on a ying ob ject. How is the lift force generated in such cases? Show with representative sketches and plots these forces acting on the following: (a) at plate aligned with ow (b) at plate at = 2o. (c) a stationary circular cylinder. (d) a rotating circular cylinder. (e) a symmetrical airfoil at =0o. (f ) a cambered airfoil at = 0o. [4+62=16] 3. Show with appropriate sketches details of the construction of an all metal tubular frame fabric covered fuselage for a light airplane . Explain the sharing of loads by all members. [16] 4. A sailplane has GTOW of 5500 N and wing loading w = 600 -2. Its drag polar is given as D = 0.010 +0.022 L 2. Determine its md and mp. Check if the two velocities are as per the relation (to be established by you). [8+8] 5. (a) Describe the purpose of acquiring a trainer aircraft for civil /domestic re-...