PPRuNe Forums - Search Results

Search: Posts Made By: violator

Showing results 1 to 4 of 4
Search took 0.00 seconds.

Forum: Tech Log

31st Dec 2007, 17:40

Replies: 105

Virtual A320 Triple Hydraulic failure

Views: 25,561

Posted By violator

PBL, the PTU transfers hydraulic pressure (via...

PBL, the PTU transfers hydraulic pressure (via shaft power) between the G and Y systems. There's no fluid transfer.

IIRC, PTU logic is based on p/b, the delta p between G and Y being >500psi and...

Forum: Tech Log

31st Dec 2007, 15:00

Replies: 105

Virtual A320 Triple Hydraulic failure

Views: 25,561

Posted By violator

While that calculation is good, you're assuming...

While that calculation is good, you're assuming that hydraulic system failures are independent events, but they're not. Most (all?) of A320 G&Y failures have been caused by inadventent PTU selection....

Forum: Tech Log

30th Dec 2007, 13:29

Replies: 105

Virtual A320 Triple Hydraulic failure

Views: 25,561

Posted By violator

Aside from that, IIRC the ECAM action for a G or...

Aside from that, IIRC the ECAM action for a G or Y hyd loss doesn't say turn off the PTU! And of course, in the event of a G or Y reservoir low quantity (or overheat) the PTU p/b will be shining away...

Forum: Tech Log

30th Dec 2007, 11:54

Replies: 105

Virtual A320 Triple Hydraulic failure

Views: 25,561

Posted By violator

Less than 10^-9 per flight hour. Just like other...

Less than 10^-9 per flight hour. Just like other catastrophic failures.

Off the top of my head I can't think of a G and Y hyd failure that wasn't caused by inadvertent use of the PTU. Certainly...

Showing results 1 to 4 of 4