Download GTU BE/B.Tech 2019 Winter 7th Sem New 2170101 Aircraft Design I Question Paper

FirstRanker.com

GUJARAT TECHNOLOGICAL UNIVERSITY
BE - SEMESTER- VII (New) EXAMINATION — WINTER 2019

--- Content provided by⁠ FirstRanker.com ---

Subject Code: 2170101 Date: 23/11/2019
Subject Name: Aircraft Design I
Time: 10:30 AM TO 01:00 PM Total Marks: 70

Instructions:
1. Attempt all questions.

--- Content provided by‍ FirstRanker.com ---

2. Make suitable assumptions wherever necessary.
3. Figures to the right indicate full marks.
4. Use drawing instruments to make figures.

MARKS

Q.1 (a) Discuss three phases of aircraft design process in one sentence. 03

--- Content provided by​ FirstRanker.com ---

(b) Define Basic empty weight, expandable payload, reserve fuel, 04
maximum zero fuel weight.
(c) Shortly explain different phases of flight of a conventional ground 07
attack aircraft.

Q.2 (a) Define all parameters required to start aircraft design. 03

--- Content provided by‌ FirstRanker.com ---

(b) Discuss various types of wing layout and their necessity. 04
(c) Explain aircraft development process with block diagram. 07
OR
(c) How will you determine fuel fraction for weight estimation. 07

Q.3 (a) How will you determine Maximum Takeoff Weight after determining 03

--- Content provided by​ FirstRanker.com ---

Fuel weight?
(b) Explain effect of thrust to weight ratio on climb performance. 04
(c) Explain effect of wing loading on takeoff performance in various 07
temperature and density conditions:
OR

--- Content provided by‌ FirstRanker.com ---

Q.3 (a) Which aerodynamic considerations are required to design a 03
supersonic public transport aircraft?
(b) Explain advantages and disadvantages of H-tail and V-Tail 04
configurations with neat sketch.
(c) Classify types of drag explain each of one in one sentence. 07

--- Content provided by‌ FirstRanker.com ---

Q.4 (a) How will you determine area of horizontal stabilizer of a jet transport 03
aircraft? Explain with neat sketch.
(b) Which considerations should be taken to choose airfoil section of a 04
horizontal stabilizer?
(c) How will you decide plan form shape of horizontal tail plane for 07

--- Content provided by‍ FirstRanker.com ---

different applications and airspeeds?
OR
Q.4 (a) How will you determine are of vertical fin of a supersonic jet fighter 03
aircraft?
(b) Discuss considerations to place horizontal stabilizer and set a proper 04

--- Content provided by FirstRanker.com ---

tail moment arm.
(c) How will you select type of aircraft engine for particular design? 07

Q.5 (a) Only draw suitable locations for placements of aircraft engines 03

(b) Explain principle of optimization with examples. 04
(c) What are the considerations to select material for particular 07

--- Content provided by‌ FirstRanker.com ---

components?
OR
Q.5 (a) Discuss any one type of main rotor configuration with respect to 03
maneuvering controls.
(b) What is refined weight estimation method? 04

--- Content provided by‌ FirstRanker.com ---

(c) Explain function of cyclic and collective pitch control. 07

FirstRanker.com