The ejector rack CARTRIDGES are ex-plosive devices and must not be exposed to heat, stray voltage or static electricity. Refer to TM 9-1300-206 for information concerning handling and storage of am-munition.
The jettison control panel (Figure 4-19) contains all con-
trols for jettisoning external stores. Jettison controls are as
follows:
CONTROL FUNCTION
EMER JETT ALL Applies 28 volts from essential dc bus to all stores stations when the helicopter weight is off the wheels, regardless of the rotary selector switch. A 1-second time delay permits the outboard stations to jettison before the inboard stations.
Rotary selector switch Determines which station receives primary jettison signal.
OFF Prevents jettison signal from going to any stores station.
INBD
L *Directs jettison signal to inboard left station.
R *Directs jettison signal to inboard right station.
BOTH Directs jettison signal to inboard left and right stores stations.
OUTBD
L *Directs jettison signal to outboard left station.
R *Direct jettison signal to outboard right station.
Table 4-2. Extended Range Fuel System Degraded Operation Chart
SYSTEM FAILURE CODES AND INDICATIONS DEGRADED LIGHT AUX FUEL CAUTION LIGHT DESCRIPTION OF DEGRADED OPERATION
E01 MICROPROCESSOR ERROR E03 FLOWMETER DISCONNECTED E04 ERROR FUEL FLOW CIRCUITS E05 ERROR FUEL FLOW COMPUTATION E06 MEMORY ERROR ON ON 1. AUTO XFR CAPABILITIES REMAIN 2. DEFAULTS TO CURRENT XFR SCHEDULE 3. PILOT MUST COMPUTE FUEL USAGE
E02 TEMPERATURE SENSOR NOT CONNECTED OR OUT OF RANGE ON ON 1. AUTO XFR CAPABILITIES REMAIN 2. PERFORMING TWO SELF-TESTS WILL: A. CLEAR FAILURE CODE AND REGAIN FUEL REMAINING INFO B. RESET AUX FUEL LIGHT C. DEFAULT TO PRESELECTED TEMP VALUE
LOSS OF DIGITAL READOUT ON ON 1. AUTO XFR CAPABILITIES REMAIN 2. NO FLOW AND EMPTY MONITORING INDICATIONS REMAIN 3. PILOT MUST COMPUTE FUEL USAGE
LOSS OF ONE MAIN TANK LEVEL QUANTITY SENSOR OR LOSS OF ONE SIGNAL CONDITIONER INPUT OFF OFF NO DEGRADATION
FAILED AUX TANK EMPTY SENSOR PROVIDES FALSE EMPTY SIGNAL OFF ON-IF FUEL TRANSFER SELECTED AUX TANK FUEL TRANSFER SHUTOFF VALVE CLOSES. PILOT SELECTING MANUAL MODE REOPENS VALVE.
CONTROL FUNCTION CONTROL FUNCTION
BOTH ALL Directs jettison signal to outboard left and right stores stations. Directs primary jettison signal to all stores stations. Outboard stores will jettison and 1 second later inboard stores will jettison. NOTE *If fuel tanks are connected to the left, right, or both stores stations, the BOTH mode of jettison is automatically selected even if the selector switch is at L or R.
4-46 Change 4
CONTROL FUNCTION
JETT Applies 28 volts from primary dc bus through the rotary selector switch to the selected stores station if the weight is off the wheels and the selector switch is not OFF.
4.11.5 Stores Jettison Control Operation.
To prevent unintentional jettison of exter-nal stores when the helicopter weight is on the wheels, do not actuate any jettison switch.
The jettison system provides two modes of jettisoning external stores, primary and emergency. The primary sub-system uses the rotary selector switch and the JETT toggle switch. The emergency jettison subsystem uses only the EMER JETT ALL toggle switch. Primary jettison is used when selective jettison is desired. The rotary switch is used to select the stores point for release, and the JETT toggle switch is used to actuate the release. Emergency jettison is used to release all external stores through one actuation of the EMER JETT ALL toggle switch, regardless of rotary switch position. During primary (rotary switch ALL se-lected) and emergency jettison, a 1-second delay is pro-vided after the outboard stores are released, before the in-board stores will be released. When one pair of tanks is jettisoned in a four tank system, cccc will appear on the AUX FUEL QTY POUNDS digital readout when the cor-responding fuel quantity position is selected. The fuel re-maining in the tanks jettisoned will be subtracted from the total displayed when TOTAL is selected. Power to operate the primary jettison subsystem is from the No. 1 dc primary bus through circuit breakers marked ESSS JTSN INBD and OUTBD. The emergency jettison subsystem is pow-ered from the dc essential bus through circuit breakers marked ESSS JTSN INBD and OUTBD. 中国航空网 www.aero.cn 航空翻译 www.aviation.cn 本文链接地址：UH-60Q 直升机技术手册 直升机操作手册 1(145)
