Aircraft Design Mock Test 6

10%

Question 1 of 10

1. Which of the following is an incorrect example for BL diverter?

Boundary layer suction

Flap

Step diverter

Boundary layer bypass duct

Question 1 of 10

Question 2 of 10

2. What is the following is correct?

Thrust loading is weight to lift ratio

Lift is always same as weight

Quadricycle landing gear arrangement requires Flat takeoff attitude

Drag is always higher than weight

Question 2 of 10

Question 3 of 10

3. Evaluate required scale factor if ratio of weight of the rubber engine and the actual selected engine is 0.8.

6.2

0.8164

0.012

Question 3 of 10

Question 4 of 10

4. Typically, diffuser length is about eight times the diameter for supersonic application.

True

False

Question 4 of 10

Question 5 of 10

5. Only convergent section will be used for supersonic speeds.

False

True

Question 5 of 10

Question 6 of 10

6. Let's consider we need to design a propeller engine which has 3 blades. What will be the typical value of propeller diameter? Engine is expected to produce 400 Hp of power.

129

129.95

128.94

80.5 unit

Question 6 of 10

Question 7 of 10

7. Following diagram represents ______________

tail podded engine

wing root buried engine

wingtip podded engine

wingtip buried engine

Question 7 of 10

Question 8 of 10

8. If a propeller is designed to have 200 Hp then find the appropriate diameter for the propeller. Consider 2 blades.

180

82.73 unit

210

34.56

Question 8 of 10

Question 9 of 10

9. Following diagram represents __________

divergent nozzle

convergent nozzle

cd nozzle

constant area nozzle

Question 9 of 10

Question 10 of 10

10. Inlet pressure recovery is defined as ______

incoming velocity by incoming Mach number

total pressure deliver to the engine divided by freestream total pressure

total dynamic pressure

lift to drag ratio

Question 10 of 10