A jumbo jet has external diameter of 150in. Calculate the value of internal diameter for passenger cabin.

142in

150in

167in

172in

Correct Answer : 142in

Explanation : Given, external diameter D = 150in.
Door jumbo jet, structural thickness t = 4in.
Hence, internal diameter d is given by, d = D – 2*t = 150 – 2*4 = 142in.

Recently Updated in Aircraft Design Questions

If weapon is mounted at bottom of the fuselage then it is called _________

external always

internal carriage

conformal

rail launch system always

Correct Answer : Option (C) : conformal

Explanation : When weapons are mounted at bottom of fuselage then, it is termed as conformal type of weapon carriage. Drag produced by conformal is lower than external but higher than the internal weapon carriage system.

Which weapon carriage option gives more flexibility to carry different weapons?

Conformal

External carriage

Internal carriage

Rail launch system always

Correct Answer : Option (B) : External carriage

Explanation : External weapon carriage system provides more flexibility to carry different weapons. This is one of the advantages of an external type weapon carriage.

Following diagram represents ______

typical gun

missile layout

rocket system

missile launch system

Correct Answer : Option (A) : typical gun

Explaination : Gun is one of the most common and important weapons used in military aircraft. The above diagram is showing typical gun viewed from side. Gun should be located based on mission requirements. Ammunition container is typically located at aft end of the gun as shown.