TB20 MAINTENANCE MANUAL 32 起落架 TB20飞机维护手册(42)
时间:2011-11-03 13:08来源:蓝天飞行翻译 作者:航空
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Main L / G actuating cylinder 2 730 - 740 / 32-30-01
Nose L / G actuating cylinder 1 100 131 32-30-02
Main L / G hinged strut 2 730 - 740 / 32-30-03
Nose L / G hinged strut 1 100 131 32-30-04
Main L / G compensating spring 2 730 - 740 / 32-30-00
Nose L / G compensating actuator 2 100 131 32-30-06
End of travel microswitch 8 100 - 730
- 740 131 32-30-07
3. DESCRIPTION (Figure 1)
A. Main and nose L / G actuating cylinders
Three double-acting actuators allow the landing gear retraction and extension thanks to the hydraulic pressure provided by an electrohydraulic generator. They are attached to the cell at body side, and to the hinged strut at slide rod.
Post-MOD. 141
In order to avoid the transient illumination / extinction of the green indicator lights, a flow regulator is installed on the "retracted" port of the nose landing gear actuating cylinder.
B. Main and nose L / G hinged struts
A hinged strut on which is attached actuating cylinder provides for each landing gear transmission of "up" and "down" maneuvers as well as "landing gear down" mechanical locking. Locking of landing gears in "up" position is ensured by hydraulic pressure which is maintained automatically by a valve on the electrohydraulic generator located under rear seat.
ABAB
Validity : Electrohydraulic generator "L.H.C." 32 30-00Page 1
(BA) JUN 01
1 - Nose landing gear rubber stop
2 - Nose landing gear end of travel microswitch
3 - Main landing gear actuating cylinder
4 - Main landing gear rubber stop
5 - Main landing gear end of travel microswitch
6 - Main landing gear ground safety microswitch
7 - Main landing gear compensating spring
8 - Main landing gear hinged strut microswitch
9 - Main landing gear hinged strut
10 - Nose landing gear compensating actuator
11 - Nose landing gear hinged strut microswitch
12 - Nose landing gear hinged strut
13 - Nose landing gear actuating cylinder
Extension and retraction
Key to Figure 1
ABAB
Validity : Electrohydraulic generator "L.H.C." 32 30-00Page 2
(BA) JUN 01
®
Extension and retraction
Figure 1
ABAB
Validity : Electrohydraulic generator "L.H.C." 32-30-00Page 3
(BA) JUN 01
C. Main landing gear compensating spring
The helical compensating spring provides hinged strut locking when the main landing gear reaches the low position in the "EMERGENCY" extension. It is pulled on the end of the hinged strut at the landing gear side. It is attached to the end of the hinged strut and to a landing gear fitting above its hinge.
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