Aircraft Structure definitions Flashcards

1
Q

What is the skin

A

The smooth outer covering of the airframe

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2
Q

What is the frame

A

Transverse structural member.

Provides aerodynamic shape and rigidity

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3
Q

What is a former

A

Lighter than a frame, used more for shape

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4
Q

What is a stringer

A

A long continuous member that assists skin load carrying to other aircraft structures

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5
Q

What is a bulkhead

A

Major transverse member in the fuselage or wing and other structure

Divides the fuselage into compartments

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6
Q

What is a lightening hole

A

A hole in a member to decrease weight with strength maintained by flanging around the hole

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7
Q

What is a longeron

A

Main longitudinal structural member (heavier than stringer)

Travels longways down the fuselage

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8
Q

What is a stringer

A

Long continuous member that assists skin load carrying to other structural members

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9
Q

What is a stiffner

A

strip or beam attached to sheet to resist load.

Short component to stiffen localised area

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10
Q

What is a doubler

A

A piece of sheet or strip placed against aircraft skin to provide stiffness or additional strength

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11
Q

What is a cap

A

Longitudinal member at the top and bottom of a beam often called a boom

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12
Q

What is a web

A

Vertical member of a beam, spar or length of wing providing strength to resist shear and keep upper and lower booms apart

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13
Q

What is a boom

A

Longitudinal structural member of a spar

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14
Q

What is a rib

A

Structural cross pieces combining with spars and stringers to make the frame work of a wings, ailerons, elevators, rudders and stabilisers. (makes the aerofoil shape)

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15
Q

What is cantilever construction

A

Supported internally by structural members assisted by the skin

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16
Q

What is semi cantilever construction

A

Supported by external bracing

17
Q

What is a spar

A

The main structural span wise member of an aerofoil.

Main part of the wing

18
Q

What is an empennage

A

The tail unit consisting of horizontal and vertical stabilisers

19
Q

What is a nacelle

A

Any auxiliary structure that encloses the power plant or other equipment

20
Q

What is a cowl panel

A

Surrounds the power plant or other equipment to improve airflow

21
Q

What is a fairing

A

A smooth covering over a joint or junction in an aircraft structure providing a smooth surface for the airflow, reducing drag

22
Q

What is an access panel

A

A seperate or distinct part of the aircraft structure easily removed

23
Q

Structural/stressed panel

A

Similar to access panel but more of a substantial design.

May need to be fitted IAW with SRM or MM prior to aircraft jacking or movement

24
Q

What is a Fillet

A

An aerodynamic fairing giving radius at the junction of two surfaces

25
Q

What is a tie

A

Diagnosable and in tension

26
Q

What is a strut

A

Straight up and down

Compression

27
Q

What is a beam

A

On the outside

Bending

28
Q

What is a false spar

A

Spa wise load bearing member, not connected the aircraft fuselage

29
Q

What is a cap

A

Longitudinal member at the top and bottom of a beam