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Posted Date: 22 Jun 2008 Posted By: Sriram Member Level: Diamond
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2006 Andhra Pradesh State Jawaharlal Nehru Technological University B.Tech AIRCRAFT DESIGN PRACTICE Set No. 2 Question paper
Code No: RR412102 Set No. 2
IV B.Tech I Semester Regular Examinations, November 2006
AIRCRAFT DESIGN PRACTICE
(Aeronautical Engineering)
Time: 3 hours Max Marks: 80
Answer any FIVE Questions
All Questions carry equal marks
1. Compare design features of Wright Flyer with a bi-plane of World War I era. What
changes are noted there in? Make use of sketches and plots to illustrate your answer.
[16]
2. Describe various types of airfoil sections used in aircraft industry. Describe in
details 4 digit and 5 digit series of NACA sections. Make use of sketches and plots
to illustrate your answer. [16]
3. Consider a new design of airplane, Crew of 4, 20 passengers with 30 Kgs baggage
each. Make use of std. data and trends for such designs. Estimate power require-
ments for a cruise speed of 300 Kms / hr. Assume parameters accordingly. Provide
initial size and configuration lay out for this airplane [16]
4. Compare air load distribution over a swept back wing with an elliptic wing. Which
one of these is superior and how. Which of these has higher numerical value of
Oswald wing efficiency factor. Make use of sketches and plots in support of your
answers. [16]
5. Differentiate between turboprop engine and turbojet engine. What factors affect
the integration of a turboprop engine? What procedures will you follow for the
integration? [16]
6. Discuss how the following factors affect the aerodynamic design of an aircraft:
(a) Powerplant type
(b) Fuselage layout [2×8=16]
7. Draw the three views and neatly label the various components of a low wing twin-
turbojet transport aircraft having engines under the wing. Estimate the perfor-
mance and stability characteristics of this aircraft and compare them with a similar
aircraft having high wing configuration having podded engines. [16]
8. (a) What are the general wing design requirements? What factors affect the design
of a wing structure?
(b) What purpose is served by the shock absorbers of a landing gear? [12+4]
1 of 1
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