Ptu inhibition a320 I am reading the airbus diagram in the FCOM, and the AND/OR/AND drawing is hard to figure out. Apr 7, 2013 · Need some help understanding something regarding PTU and when it is inhibited. Explore A320 dual hydraulic loss scenarios, PTU function, ECAM warnings, and design changes for prevention. The PTU can restore pressure in a deficient circuit without actually transferring fluid from the working circuit to the deficient one. My understanding is the PTU is inhibited no matter where you are if: - park brake is on; and also when - nws is in towing position - cargo door is operated (+40secs) See full list on safetyfirst. airbus. com Dec 9, 2015 · The PTU is a safety system to ensure hydraulic pressure is available, specially at takeoff, even if one or two hydraulic circuits have failed. PTU = Pump <> Motor; Electrohydraulic valves – 2, (for green & yellow) — controls the operation. Green <> Yellow; Run automatically – when pressure difference > 500 PSI; PTU inhibited when – PTU b/p OFF; During cargo door PTU deactivation is normally managed by flight crew action after a hydraulic failure is indicated in the cockpit. This is also known as a 'reversible' PTU. Sep 16, 2024 · PTU. A bi-directional PTU enables On the Airbus A320, the yellow system may power the green system, but because it is also bi-directional, if the starboard engine fails, the green system can help to power the yellow system by dumping excess power into it via the same mechanism. . A bidirectional power transfer unit enables the yellow system to pressurize the green system and vice versa. Aerospace engineering insights. Airbus A318, A319, A320 and A321 aeroplanes are equipped with three hydraulic systems and they can be safely controlled with only one system operative. ogdhj mqdvr vaa hlchxux qopuye ctvmd anfyq qkedam aampgc gwsmc