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Previous Year Exam Questions for Automotive Aerodynamics - AA of 2016 - IKGPTU by Ravichandran Rao

  • Automotive Aerodynamics - AA
  • 2016
  • PYQ
  • I K G Punjab Technical University - IKGPTU
  • Automobile Engineering
  • B.Tech
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14915 14915 14915 14915 14915 14915 14915 14915 14915 14915 Roll No. Total No. of Questions : 09 14915 14915 14915 14915 B.Tech.(AE) (2011 Onwards) 14915 14915 14915 14915 14915 14915 : 02 Total14915 No. of Pages 14915 14915 (Sem.–6) 14915 AUTOMOTIVE AERODYNAMICS 14915 14915 14915 14915 14915 14915 Subject Code : BTAE-604 Paper ID : [A2383] 14915 14915 14915 14915 14915 14915 Time : 3 Hrs. 14915 INSTRUCTIONS TO CANDIDATES : 14915 1. 2. 14915 14915 3. 4. 14915 Max. Marks : 60 14915 14915 14915 14915 14915 14915 SECTION-A is COMPULSORY consisting of TEN questions carrying T WO marks each. SECTION-B contains FIVE questions carrying FIVE marks each and students have to attempt any FOUR questions. 14915 14915 14915 14915 SECTION-C contains14915 T HREE questions carrying T EN marks each and 14915 students have to attempt any T WO questions. Assume any missing data suitably. 14915 14915 14915 14915 14915 14915 14915 14915 14915 14915 14915 14915 14915 14915 SECTION A 14915 1. 14915 14915 14915 14915 14915 14915 14915 14915 14915 Write14915 briefly : 14915 14915 i) What are major historical developments in the field of automotive aerodynamics? ii) What are engine cooling requirements? iii) What is meant by a bluff body? 14915 14915 14915 14915 14915 14915 14915 14915 14915 14915 14915 14915 14915 14915 14915 14915 14915 14915 14915 14915 14915 14915 14915 14915 iv) What is boat tailing? v) What is meant by drag coefficient? 14915 14915 14915 vi) What is the effect of side winds on vehicle dynamics? 14915 and explain 14915 vii) Draw the concept 14915 of wind shield 14915 angle. viii) Explain the origin of forces and moments on a vehicle. 14915 14915 14915 14915 14915 14915 14915 14915 ix) Can we use wind tunnels for analyzing performance of submarines? Explain. x) What is meant by full scale wind tunnel? 14915 14915 14915 14915 14915 14915 14915 14915 14915 14915 14915 14915 14915 14915 14915 14915 14915 14915

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14915 14915 14915 14915 14915 14915 14915 14915 14915 14915 14915 14915 14915 14915 14915 14915 14915 SECTION B 2. 14915 14915 14915 14915 14915 14915 14915 14915 4. Is there any difference between hatch back, fast back and square back? Explain by using 14915 14915 14915 14915 14915 14915 sketches. 14915 14915 14915 7. 14915 14915 14915 14915 8. 14915 14915 Sketch and explain the construction of flow field around a car. 6. 14915 Is there any difference between fluid mechanics and fluid dynamics? Explain by taking a suitable example. 3. 5. 14915 14915 14915 9. 14915 14915 Explain the methods of drag reduction in commercial vehicles. 14915 14915 14915 14915 14915 14915 14915 Explain the principle and working of wind tunnels used for studying automotive aerodynamics. 14915 14915 14915 SECTION C 14915 14915 14915 A heavy truck weighing 72500 lb rolls along 170 in Denver at a speed of 67 mph. The air temperature 26.01 in Hg. 14915 The truck is 8’14915 wide by 14915 is 55°F and 14915the barometric 14915 pressure is 14915 13.5’ high and has an aerodynamic drag coefficient of 0.65. The truck has radial ply tires. Calculate the aerodynamic drag, the rolling resistance (as per SAE equations) and the road load horsepower at these conditions. 14915 14915 14915 14915 14915 14915 14915 14915 14915 What are the effects of gap configuration and effects of fasteners on shape optimization of cars? 14915 14915 14915 14915 14915 14915 14915 Describe the measurement techniques and equipments used in wind tunnels for automotive aerodynamics. 14915 14915 14915 14915 14915 14915 14915 14915 14915 14915 14915 14915 14915 14915 14915 14915 14915 14915 14915 14915 14915 14915 14915 14915 14915 14915 14915 14915 14915 14915 14915 14915 14915 14915 14915 14915 14915 14915 14915 14915 14915 14915 14915 14915 14915 14915 14915 14915 14915

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