# Aircraft Design MCQ – Passenger Compartment

1 - Question

Passenger cabin is defined by ________
b) pitch only
d) aisle only
Explanation: Passenger cabin is defined by using number of factors such as pitch, headroom, aisle etc. Each factor will be used to determine cabin layout. Only pitch or headroom or only aisle cannot be used for layout.

2 - Question

Pitch is defined as ___________
a) Distance from the back of one seat to the back of next respective seat
b) Height of seat
c) Height of seat minus height of next respective seat
d) Length of one seat plus height of seat
Explanation: Seat pitch is defined as the distance from the back of one seat to back of the next respective seat. Height of seat is defined from floor. By properly considering pitch of seat we can alter the number of seats in passenger cabin.

3 - Question

a) Vertical distance from the floor to the roof cover seat
b) Height of seat
c) Height of seat measured height of next respective seat
d) Length of one seat plus height of seat
Explanation: Headroom is height measured from floor to roof over seat. Headroom is one of the fundamental factor which can affect overall layout of passenger cabin. A typical commercial economy class will include headroom of more than 60in.

4 - Question

What do you mean by aisle?
a) Passage between two rows
b) Height of seat from floor
c) Height of seat measured height of next respective seat
d) Length of one seat plus height of seat of second row
Explanation: Aisle is nothing but passage between 2 rows of seats. Aisle can be used to determine a typical number of seat rows in passenger compartment of the aircraft.

5 - Question

An aircraft has 6 seats in one row then, find the ideal value of aisle numbers.
a) 2
b) 5
c) 3
d) 9
Explanation: Given, number of rows = 6 Typical number of aisle required = 6/3 – 1= 2-1 = 1.

6 - Question

A small business jet has internal diameter of 32in. find the external diameter of passenger compartment.
a) 34 in
b) 35 in
c) 32m
d) 34m
Explanation: External diameter D = Internal diameter d + 2* structural thickness t For a small business jet typical value of t is 1in. Hence, D=d+2t = 32+2*1= 34in.

7 - Question

Following diagram represents __________

a) pitch of seat
c) height of seat
d) seat diameter
Explanation: Pitch of the seat or seat pitch is defined as the distance measured from back of one seat to the back of another seat. As shown in the figure, here distance is shown from back of one seat to back of another seat. Hence, the following diagram is illustrating the concept of Pitch of seat.

8 - Question

In following diagram the term mark by ‘?’ is showing __________

b) pitch
c) seat back angle
d) over nose angle
Explanation: The term marked by ‘?’ is called headroom. Headroom is nothing but the vertical distance measured from floor to the roof over seat. Pitch of seat is used for legroom. Head clearance can be used to determine headroom requirements.

9 - Question

The term indicated by ‘?’ in following diagram _________

a) aisle width
b) aisle length
c) fuselage length
Explanation: As shown in the figure, passage between two rows has been marked as ‘?’. The above diagram represents the typical space between two rows of seat which is known as an aisle. Hence, the above diagram is showing aisle width.

10 - Question

A jumbo jet has external diameter of 150in. Calculate the value of internal diameter for passenger cabin.
a) 142in
b) 167in
c) 172in
d) 150in
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.

11 - Question

Following diagram represents __________

a) typical cargo container
b) lift curve
c) aisle