問題一覧
1
Hoses for highly pressure applications are made from
synthetic rubber liner
2
Rigid pipe flaring has the purpose of
preventing the end of the pipe from slipping and providing fluid tight seal.
3
The rigid pipes on gas turbine engines are made from
stainless steel.
4
Flexible lines must be fitted with a slack of
5-8% of the length.
5
Flexible sealing element subject to motion is a
packing
6
All aircraft high-pressure hoses have a maximum working pressure of at least ……………………..and use a synthetic rubber liner to carry petroleum products.
1,500 to3,000 psi
7
is a legible marking parallel to the longitudinal axis of a hose and is used to determine the straightness of the hose.
The lay line
8
Replacement tubing should be of the same size and material as
the original line.
9
Pipe manufacture to American AN specifications have an induced flare angle of
74°
10
is used extensively on gas turbine engine fuel systems and high pressure hydraulic systems.
Stainless steel tubing
11
The tubing used is generally of the seamless type and is specified by
material, outside diameter and wall thickness
12
If a tube bursts or cracks, it could be a result of
excessive vibration, improper installation and Metal fatigue.
13
The 1100 or 3003 aluminum alloy lines are used for
fuel lines .
14
The 2024-T and 5052-0 aluminum alloy materials are used for
hydraulic lines , Pneumatic lines and high pressure oil lines.
15
The total storage / shelf life of fuel , oil and hydraulic pressure hoses from the cure date of manufacture is
10 years.
16
The total storage / shelf life of hydraulic return lines and instrument hoses is
10 years.
17
The service life of fuel , oil and hydraulic pressure hoses is
4 years extendable up to 6 years.
18
The service life of hydraulic return lines and instrument hoses is
6 years extendable up to 8 years.
19
Lines containing physically dangerous materials, such as oxygen, nitrogen, or Freon, are marked
PHDAN
20
Lines containing flammable fluids, such as fuel are marked
FLAM
21
When speaking about "aircraft plumbing" it refers to the
tubing
22
On hydraulic system with more than 3,000 PSI operating pressure
titanium tubing is used.
23
Pipes manufactured to the British AGS specifications have an included flare angle of
32°
24
Aircraft medium pressure hoses are generally used with fluid pressures up to
1,500 psi
25
Hoses are used on instrument systems, vacuum systems, autopilots and other low pressure systems, usually operates at pressures below
250 psi
26
AN & MS rigged pipe fittings have diameters which are sized
in increments of 1/16 inch.
27
An ‘AN’ steel pipe fitting is
colored black