Aircraft Design Mock Test 3

10%

Question 1 of 10

1. If climb gradient is G, then which of the following is correct?

T/W ≥ G + 2*\(\sqrt{\frac{CD0}{ᴨ*e*AR}}\)

T/W ≥ G + 4*\(\sqrt{\frac{CD0}{ᴨ*e*AR}}\)

T/W ≥ G - 4*\(\sqrt{\frac{CD0}{ᴨ*e*AR}}\)

T/W ≥ G - 2*\(\sqrt{\frac{CD0}{ᴨ*e*AR}}\)

Question 1 of 10

Question 2 of 10

2. An unstable A/C configuration is a typical wing-aft tail body. IF MAC is 4m then, what would be the approximated location of the CG?

Question 2 of 10

Question 3 of 10

3. Which of the following is correct?

Wing twist will increase thrust by engine

Generally, tip airfoils are selected for stall characteristics

Always root airfoils are elected for stall characteristics

Wing twist is not considered for layout

Question 3 of 10

Question 4 of 10

4. Which of the following is correct?

Lift is always same as engine thrust

Rubber engine is fixed during sizing

Rubber engine can be stretched during A/C sizing

Engine sizing will be same for every A/C in the world

Question 4 of 10

Question 5 of 10

5. Following diagram represents ______

overhorn balance

notched aerodynamic balance

overhung balance

fluttered balance

Question 5 of 10

Question 6 of 10

6. Size of fixed engine can vary during sizing.

False

True

Question 6 of 10

Question 7 of 10

7. Existing engine used for sizing is called as __________

differential engine

rubber engine

unfixed engine

fixed engine

Question 7 of 10

Question 8 of 10

8. The thrust developed by fixed engine will be ___________

fixed during sizing

unfixed during sizing

independent of engine

zero at sizing

Question 8 of 10

Question 9 of 10

9. For jet aircraft, thrust loading is greater than the climb gradient.

False

True

Question 9 of 10

Question 10 of 10

10. Following diagram represents _______________

arbitrary body with circle profile only

cross-section development via longitudinal control lines

vertical plane

body with elliptic profile only

Question 10 of 10