Aircraft Design Mock Test 7

10%

Question 1 of 10

1. The hull of seaplane is based on the planning-hull concept.

False

True

Question 1 of 10

Question 2 of 10

2. Determine weight carried by wheel if inflation pressure is 100 psi and footprint area is 80 inch².

900

200 lb of force

8000 lb force

120

Question 2 of 10

Question 3 of 10

3. Which of the following is correct?

Drag is propulsive force produced by landing gear to accelerate an aircraft

Sway brace is typically used for main landing gear

Lift opposes the aircraft forward motion

Lift is always same as weight

Question 3 of 10

Question 4 of 10

4. Skin friction drag is defined as _________

wing lift drag

such drag does not exist

lift induced

drag due to friction between skin and fluid flow

Question 4 of 10

Question 5 of 10

5. Drag which is produced due to lift is called?

Parasite drag

Thrust drag

Weight

Induced drag

Question 5 of 10

Question 6 of 10

6. If an aircraft is operating with dynamic pressure of the free stream q=20Pa and has area of wing is 10m² then evaluate drag experience by the aircraft. Given drag coefficient is 0.9.

180 N

234 N

345 N

567 N

Question 6 of 10

Question 7 of 10

7. To get initial estimation of the parasite drag, aircraft wetted area can be multiplied by _____

wing span

lift

equivalent skin friction coefficient

weight

Question 7 of 10

Question 8 of 10

8. How do you define the lift coefficient?

Ratio of aerodynamic lift to the dynamic lift

Thrust to weight

Wing lift to weight of aircraft

Lift to drag

Question 8 of 10

Question 9 of 10

9. Which of the following is an example of a shock absorber?

Flap

Elevator

Solid spring shock arrangement

Lift curve slope

Question 9 of 10

Question 10 of 10

10. Following diagram represents ______

gear retraction geometry

in cockpit

drag polar

gear load chart

Question 10 of 10