Memoir 44 equipment pack1/10/2024 What is the purpose and location of the Second Stage Turbine Bypass Valve? A. It controls the amount of reheater air that go es around the first stage of the ACM turbine to limit first stage turbine output air temperat ure in order to prevent freezing. What is the purpose and location of the Low Limit Valve (LLV)? A. Under which conditions will the Air Supply and Cabin Pressure Controller (ASCPC) provide backup flow control to the Cabin Temperature Controller (CTC)? A. To allo w the pressurization system to respond. The FCV is gradually clos ed at a rate of 25 lbs/min/second. What happens if a pack switch is moved to off (in flight)? Why?Ī. To allow co ndensed water to evaporate from the packs. The FCV is gradually clos ed in 35 seconds. What happens if a pack switch i s moved to off ( on ground)? Why? A. T o allow efficient ACM accelleration 11. The FCV is gradually ope ned in 20 seconds. What happens if a pack switch i s moved to on? Why? A. What is the effect of flow schedule 0 (zero)? A. ![]() This will allow springs inside the FCV to close the valve. If the CTC or the ASCPC wants to close th e FCV, it supplies full current to the torque motor, which bleeds control pressure to the valve actuator. What is the relationshi p between torque motor current and p ack Flow Control Valve (FCV) position? A. Primary Heat Exchang er Inlet Temp Sensor, Lower and Up per Flow control valves, Pack Flow sensor 8. What are the flow control components i n the ECS bay? A. The ASCPC provides backup flow control 7. How is flow controlled if the Cabin Tempera ture Controller (CTC ) fails or los es power? A. The APU controller controls airflow to the packs. The CTC closes the lo wer valve and opens the u pper valve. How is pac k flow con trolled if the APU is on? A. Air Supply and Cabin Pres surization Controllers(ASCPC) 5. Which compo nent usually sets the fl ow schedule for the packs? A. ![]() Which compo nent controls airflow into the air conditioning packs? A. When is air for the air conditioning pa ck passed through the ozon e converters? A. Cargo Heating, equipmen t cooling system control, Forw ard Cargo Ventilation system control, Bulk Cargo Ventilation fan control, Supplemental heating control and Chiller boost fan control. Which functions are performed by the EC S Miscellaneous Cards (ESCM C)? A.
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