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Roll No. EEEEEEEEEE Total No. of Pages : 02
Total No. of Questions : 09
B.Tech. (ANE) (Sem.=-38)
AIRPLANE DESIGN
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Subject Code : ANE-413
M.Code : 70495
Time : 3 Hrs. Max. Marks : 60
INSTRUCTIONS TO CANDIDATES :
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- SECTION-A is COMPULSORY consisting of TEN questions carrying TWO marks each.
- SECTION-B contains FIVE questions carrying FIVE marks each and students have to attempt any FOUR questions.
- SECTION-C contains THREE questions carrying TEN marks each and students have to attempt any TWO questions.
SECTION-A
- Distinguish between the following terms (use sketches wherever required) : (10x2)
- Anhedral & dihedral angle.
- Camber & camber line.
- Wash-in & wash-out.
- Critical & drag divergence Mach number.
- Low & high wing loading.
- Equivalent airspeed & true airspeed.
- Geometric & aerodynamic twist.
- Range & endurance.
- Slat & slot.
- Trim & stability.
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SECTION-B
- Explain the ‘gust envelope’ of a typical fighter aircraft with help of a neat & labeled diagram. (5)
- Explain the features of various types of inlets used in high subsonic & supersonic aircrafts with the help of neat and labeled sketches. (5)
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- Explain the various factors affecting the selection of airfoil section and wing planform. (5)
- Calculate the stroke of oleo-type shock absorber with the help of data given below for an aircraft making a touchdown on a runway at sea level at forward and vertical speeds of 35m/s and 5 m/s respectively.
Rolling radius = 40cm Wheel width = 20 cm Wheel diameter = 90 cm--- Content provided by FirstRanker.com ---
n=0.8 Tire efficiency = nr = 0.45 Gear Load factor = Ngeor = 3
Also calculate the weight on wheel for a given pressure of 15 bar. - What are boundary layer diverters? Give two examples with brief description. (5)
SECTION-C
- A 250 seated jet aircraft with the following given data is flying at 10km altitude.
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M cruise = 0.7 Mach M loiter = 0.5 Mach Cruise = 6000 km Loiter = 80minutes
(L/D)max = 16 C cruise = 0.54/hour C loiter = 0.44/hour p =0.4135 kg/m’
P =26000 N/m* We/Wo=0.97 Wo Payload =80000N W passenger = 65 kg/passenger- Draw Mission segment.
- Estimate weight of the aircraft.
- For the aircraft in Q.7.,
- Find out the length and diameter of the fuselage. Use length = 0.287*W, 0.43 where W, is in kg. Suggest and sketch the seating arrangement for this aircraft. (5)
- What will be the %age change in weight if the aircraft is to be designed for additional payload of 20000 N? (5)
- Write notes on the following :
- Airworthiness and its responsibility. (5)
- Role of composite material in modern aircrafts. (5)
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NOTE : Disclosure of Identity by writing Mobile No. or Making of passing request on any page of Answer Sheet will lead to UMC against the Student.
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This download link is referred from the post: PTU B.Tech Question Papers 2020 March (All Branches)