R05222105-introduction-to-aerospace-transportation-systems

Set No. 1

Code No: R05222105

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 flight. [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 N/m2 , T = 150 C, L = 0.0065 K /m. [16] 3. (a) Describe with adequate sketches/diagrams/illustrations, major 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 flight of airplane can be obtained from the Power vs Velocity plot. (b) An airplane weighs 5000 N and has a wing loading of 600N m−2 . If its drag polar is CD =0.010 +0.022 CL 2 , determine its velocity for minimum power in straight and level flight. [8+8] 5. (a) You are to plan for adding a small civil trainer airplane for a small flying club in a remote village. Spell out the role and justification for the airplane under considerations. (b) What are the steps to be taken for planning the schedule of next flight afresh from station P to station Q, over flying 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 fluid possesses faster cooling properties at lower altitudes and becomes less efficient at higher altitudes. Provide your reasoning and remedies to the problem. [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

Set No. 1

Code No: R05222105 ⋆⋆⋆⋆⋆

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Set No. 2

Code No: R05222105

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 N/m2 , T = 150 C, 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 = CD0 +kCL 2 . Show that the power required to overcome the drag in st. and level flight is a minimum if {CD/CL1..5 } is a minimum. Hence 1 prove that CLmp = CLmd (3) /2 . Show the complete work out. [16] 5. (a) Describe the requirements of air superiority fighter 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. ii. iii. iv.

air safety Airworthiness Certificate of Airworthiness Prevention of air accidents.

(b) Describe the specifications and acceptance testing of an assembly with rubber and metallic seals and lubricating oil, to be carried in flight from Pokhran to Leh. [8+8] 7. What are the requirements of cabin-cooling systems in an aerospace vehicle? Describe 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

Set No. 2

Code No: R05222105

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] ⋆⋆⋆⋆⋆

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Set No. 3

Code No: R05222105

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 first powered flight 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 N/m2 , T = 150 C, 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 flight. [8+8] 4. (a) Define the terms: i. ii. iii. iv.

stalling speed wing loading minimum drag condition minimum power condition. Establish their importance in airplane performance calculations / predictions.

(b) Consider the drag polar CD = CD0 + kCL 2 . If the airplane flies straight and level at a velocity V, Plot the relationship between Power, P and speed, V. Can you locate the velocity for minimum drag on this curve? [8+8] 5. (a) Describe the requirements of air superiority fighter interceptor for the armed forces. (b) What measures are taken for the checking of cargo at a domestic airport? [8+8] 6. (a) Define the terms: i. ii. iii. iv.

air safety, Airworthiness, Certificate of Airworthiness, Prevention of air accidents.

(b) Explain the specifications and acceptance testing of an assembly with rubber and metallic seals and lubricating oil, to be carried in flight from Pokhran to Leh. [8+8]

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Set No. 3

Code No: R05222105

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] ⋆⋆⋆⋆⋆

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Set No. 4

Code No: R05222105

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 effect of the size of the wheels on the motion and stability of a scooter as seen on the roads in India? [8+8] 2. Define aerodynamic forces acting on a flying object. How is the lift force generated in such cases? Show with representative sketches and plots these forces acting on the following: (a) flat plate aligned with flow (b) flat plate at α = 2o . (c) a stationary circular cylinder. (d) a rotating circular cylinder. (e) a symmetrical airfoil at α =0o . (f) a cambered airfoil at α = 0o .

[4+6×2=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 = 600N m−2 . Its drag polar is given as CD = 0.010 +0.022 CL 2 . Determine its Vmd and Vmp . 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 requirements. What are the essential features of such airplanes? Elaborate with examples. (b) Prepare the flight plans of your personal airplane for flight between station X and station Y. In between there are three airports P,Q and R. List the steps of action at your end before you submit the flight plans. [8+8] 6. (a) Describe the role of (i) FAA and (ii) CAA in the USA. What is the role of DGCA and CEMILAC for that matter in INDIA.? (b) List the steps for ensuring airworthiness of certain component on an airplane. [8+8]

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Set No. 4

Code No: R05222105

7. Describe the necessity and details of the heating system to be used in a large multiengine airplane. Describe one such system making use of an air bleed system. [8+8] 8. (a) What are distinct advantages of Selective Calling System(SELCAL)? (b) 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] ⋆⋆⋆⋆⋆

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