UH-60Q 直升机技术手册直升机操作手册 1(138)_航空信息_民用航空_通用航空

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4.9 RESCUE HOIST.
The rescue hoist system (Figure 4-17) consists of a hoist assembly, control section, relays, circuit breakers, and nec-essary electrical wiring. The hoist has a capacity of 600 pounds, is electrically powered from the No. 1 ac and dc primary buses through circuit breakers labeled HOIST PWR, and speed is variable from zero to 350 fpm. It is supported by a .xed tubular strut above the cabin door which is bolted to a support .tting on the fuselage. The hoist contains 290 usable feet of cable and has a guillotine-type cable cutter and an automatic cable brake. The rescue hoist system receives power through the No. 1 ac and dc primary buses through circuit breakers labeled HOIST PWR, and controlled from the No. 1 dc primary bus through a circuit breaker labeled HOIST CONTR.
4.9.1 Hoist Control Panel. There are two control pan-els (Figure 4-17.), one is located in the cockpit on the rear of the lower console and the other is in the right cabin aft of the cabin door. The HOIST POWER switch is located on the pilot’s hoist control panel. The control panel also con-tains a PILOT OVERRIDE-UP-DOWN switch which al-lows the pilot to override any crew hoist command and operate the hoist at a .xed speed. The hoist cable can be cut from the cockpit via the CABLE CUT switch. The CABLE CUT switch is covered to avoid accidental .ring of the cable cutter. The crew control panel located in the cabin, contains a ARM-TEST switch, SQUIB TEST light, SEARCH LIGHT switch, and a covered CABLE CUT switch.
4.9.2 Rescue Hoist Pendant. The crewmember’s res-cue hoist control pendant (Figure 4-17.), in the aft cabin, contains three lighted indicators labeled, FULL IN, FULL OUT, and MTR HOT. The pendant also contains a direc-tion and speed thumbwheel labeled UP-OFF-DN, cable speed is directly proportional the amount of thumbwheel de.ection. The search light control switch labeled SCHLT-FWD-AFT-LEFT-RIGHT allows control of the search light from the cabin. A cable length indicator labeled CABLE-FEET, indicates the amount of cable that is paid out.

The cable pay out reading is for reference only, cable stretch varies with the load at-tached to the end of it and also varies with the amount of cable paid out.

4.9.3 Controls and Function. The rescue hoist control system (Figure 4-17.) has all the necessary controls for op-
erating the hoist from the cockpit or the cabin. The function of each control is as follows:
CONTROL/ FUNCTION
INDICATOR
HOIST POWER Turns on power to the hoist when
ON-OFF switch in the ON position. Turns off
power to the hoist when in the OFF
position.
PILOT OVER- Provides the pilot with the
RIDE UP-DOWN capability to override any hoist
switch command and operate the hoist up
or down at a .xed speed.
CABLE CUT Controls cable cutter .ring circuit.
switch (cockpit/
cabin)
SEARCH LIGHT
switch
ON/NORMAL Turns on power to the searchlight.
position
ON/NVG Turns on power to the NVG
position compatible searchlight.
OFF position Turns power off to both searchlight
modes.
ARM-TEST switch Tests the cable cut squib circuit.
ARM position Arms the cable cut circuit.
TEST position Tests the cable cut squib circuit.
SQUIB TEST light PRESS TO TEST, tests the light
only.
FULL IN light Illuminates when the hoist cable is
in the full in position.