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d-jsb / CRJ700-family

The Bombardier CRJ700 series for FlightGear Flight Simulator.
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Emergency hydraulic circuits don't work when in AUTO mode #43

Closed ghost closed 8 years ago

ghost commented 8 years ago

When out of fuel or with both engines out, emergency hydraulics won't work if switches for those circuits are set to AUTO instead of ON. Is this the real behaviour? Should they be set to ON by default instead of AUTO as described in checklists?

ghost commented 8 years ago

Does this help?

" Hydrolic pumps to AUTO provides

pumps 1B and 2B to operate when • respective bus is powered • any generator is operating • flaps not at zero (0) "

" The ADG Bus powers...

• Flaps & Slats at 1/2 speed • Pitch trip • Hydraulic pump 3B • A/C Essential Bus
ADG powers hydraulic pump _____ regardless of switch position

3B"

d-jsb commented 8 years ago

From the FOM: "System 3 main pump (3A) normally runs continuously, while the backup pump (3B) is available during periods of high flow requirments. Pump 3B is automatically powered, during an AC power failure, by the air driven generator (ADG) when it is deployed."

"AC motor pumps 1B and 2B do not automatically start during or after an engine failure."

"Hydraulic system No. 3 AC motor pumps (ACMPs) are controlled by switches on the hydraulic control panel. ACMP 3A runs continuously to maintain normal system pressure. ACMP 3B operates during takeoffs and landings (based on Flaps setting >0). The ADG bus automatically powers ACMP 3B when the ADG is deployed (independent of the flight compartment 3B switch setting)."