AC Construction

Question 1

Major Airframe Component

Answer 1

Fuselage
Wings
Empennage

Question 2

Riveting

Answer 2

Connecting metal to metal

Flush - used for aerodynamics

Question 3

Fastening

Answer 3

Used to join composite material
Titanium collar
Prevent corrosion

Question 4

Welding

Answer 4

Fusion of metals with heat

Question 5

Bolting

Answer 5

Used in high shear tensile areas

Temp fixture for structure/can come lose due to vibrations

Question 6

Wire locking

Answer 6

Bolting method

Placing wire through bolt to stop coming lose due to vibrations

Question 7

Pinning

Answer 7

Used to attach strut ban to fuse pin on engine

Question 8

Construction methods

Answer 8

Framework - light a/c

Monocoque - single shell/strength in skin/no support framework

Semi - Monocoque - lightweight framework with

Question 9

Machined Structure

Answer 9

Integral

Less risk of fatigue/save weight/no holes for rivets/ideal for wet wing design

Question 10

Boeing method

Answer 10

Rotating metal/build shell around barrel

Question 11

Airbus Composite

Answer 11

Aluminium frame covered by x4 shells of different thickness

Question 12

Circular Fuselage

Answer 12

Circular
+ eliminate corners for airflow
+ withstand pressures from loads
- space wasted
- hoop stress

Question 13

Oval fuselage

Answer 13

A380
- cargo advantage
- lower manufacturing
- greater capacity
- higher airspeed

Question 14

Pressures in fuselage

Answer 14

8/9 PSI

Question 15

Types of wings

Answer 15

High Cantilever - c152
Cantilever - PA28
Externally braced - weird sea plane

Question 16

Spars

Answer 16

Withstand torsional and bending loads

Question 17

Ribs

Answer 17

Provide aerodynamic shape
Transfer loads to spar

Question 18

Stringers

Answer 18

Take the longitudinal load
Assist the skin to absorb longitudinal compressive loads
Transfer load to spar

Question 19

Longerons

Answer 19

Main longitudinal load carrying on fuselage

Beams running in fore/aft direction along fuselage
Spanwise in wing to transfer bending and twisting loads to spars.

Bending/twisting stresses

Question 20

Cantilever Wing

Answer 20

Uses no external struts or bracing. Spark built to carry all torsion and bending loads

DA40 for example

Question 21

Non Cantilever Wing

Answer 21

Uses external struts or wires to assist in supporting the wing

Cessna 152 for example

Question 22

Double Bubble design allows

Answer 22

Increased airspeed when compared to conventional fuselage designs

Question 23

Cockpit side windows are usually

Answer 23

Defogged only

Question 24

Engine compartments decking and firewalls are usually made from

Answer 24

Titanium or stainless steel