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Search: Posts Made By: Gegenbeispiel
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7th Apr 2019, 22:00
Replies: 5,127
Views: 10,281,596
Posted By Gegenbeispiel

Design for WORST airmen

Wrong. Safety philosophy requires the plane to be designed for the worst possible but still properly licenced and type rated crew.
Designing civil air transport aircraft for great airmen is...
6th Apr 2019, 10:46
Replies: 5,127
Views: 10,281,596
Posted By Gegenbeispiel

The original B737 may have been that, the MAX is...

The original B737 may have been that, the MAX is not. If it were. you wouldn't need MCAS to certify.
AFAIK, the MAX is certified as a B737 amendment. That may be wrong. If MCAS is necessary to...
6th Apr 2019, 01:11
Replies: 5,127
Views: 10,281,596
Posted By Gegenbeispiel

Since the MCAS is just software (running in the...

Since the MCAS is just software (running in the FCCs) there is no other way.
6th Apr 2019, 00:57
Replies: 5,127
Views: 10,281,596
Posted By Gegenbeispiel

>"Firing blanks" That's not uncommon in...

>"Firing blanks"

That's not uncommon in avionics software. It simplifies code - and that, more often than not, makes it more reliable. Plus, the not-engaged FCC is then a hot spare, ready to...
18th Apr 2018, 23:07
Replies: 438
Views: 401,388
Posted By Gegenbeispiel

tdracer: >"I've seen no evidence that the fan...

tdracer: >"I've seen no evidence that the fan blade was uncontained"

The NTSB has stated that fan blade 13 is missing. That's not simply missing from the hub, it's gone and they cannot find it. To...
18th Apr 2018, 22:21
Replies: 438
Views: 401,388
Posted By Gegenbeispiel

Blade departure path; hydraulics

[QUOTE=pilotmike;10123195]The only force that kept the blade continuing its circular path around the shaft was the 'inward' centripetal acceleration force while it was still attached.
Once the blade...
19th Jan 2018, 09:05
Replies: 84
Views: 33,606
Posted By Gegenbeispiel

Is Alice suitable for a chartered An-22 or...

Is Alice suitable for a chartered An-22 or B747-8F to bring in a spare engine, other bits needed and tooling to swap engines? And take the bad one to be investigated?
19th Jan 2018, 02:27
Replies: 84
Views: 33,606
Posted By Gegenbeispiel

Continue on 1 engine over water ???

Continuing out over water on one engine when the problem occurred over land would have seemed somewhat insane - and contrary to procedures.

Sounds like a job well done by the flight crew. The...
1st Oct 2017, 10:48
Replies: 554
Views: 528,043
Posted By Gegenbeispiel

You'd probably want to remove the failed engine...

You'd probably want to remove the failed engine ASAP and carefully freight it to a lab. And then consider a min-weight 3 engine ferry to somewhere close with major repair facilities like Montreal to...
1st Oct 2017, 09:57
Replies: 554
Views: 528,043
Posted By Gegenbeispiel

AF66 - continue to LAX engine-out ??

Big part of nacelle missing, lots of extra drag - might have made it to Montreal or Halifax, but not to LAX. However, bits might still fall off, so best not to fly over densely populated areas.
3rd Aug 2016, 21:47
Replies: 1,749
Views: 1,943,428
Posted By Gegenbeispiel

EEngr: The evac. video is over 180 sec. long,...

EEngr: The evac. video is over 180 sec. long, thus the 45 sec. media report is in error. During normal disembark, at most half the doors are in use, often fewer, and people aren't in much of a hurry...
Forum: Tech Log
3rd Aug 2013, 17:25
Replies: 140
Views: 23,959
Posted By Gegenbeispiel

DozyWannabe: >"Airbus FBW Normal Law...

DozyWannabe: >"Airbus FBW Normal Law augmentations ... it's not really anything more than an evolution of the artificial feel technology that airliners have been using for over half a century"
...
Forum: Tech Log
2nd Aug 2013, 21:00
Replies: 140
Views: 23,959
Posted By Gegenbeispiel

Airbus "handflying"

DozyWannabe (http://www.pprune.org/members/54871-dozywannabe): A320-330-340-380 FBW Normal Law may have the look and feel of basic handflying, but it's very far from it - loads of protections, loads...
Forum: Tech Log
2nd Aug 2013, 00:20
Replies: 140
Views: 23,959
Posted By Gegenbeispiel

sabenaboy: >"I still do A LOT of basic flying in...

sabenaboy: >"I still do A LOT of basic flying in my A320 with everything switched off (except the engines http://images.ibsrv.net/ibsrv/res/src:www.pprune.org/get/images/smilies/wibble.gif )"
...
Forum: Tech Log
1st Aug 2013, 20:31
Replies: 140
Views: 23,959
Posted By Gegenbeispiel

sabenaboy: >"You could even say that you should...

sabenaboy: >"You could even say that you should change your job if you're not comfortable HAND-FLYING that plane. I'll say it again: they're all big Cessna's."

No way. :ugh: A Cessna's (152,...
1st Aug 2013, 19:43
Replies: 343
Views: 108,093
Posted By Gegenbeispiel

No, it doesn't seem extensively automated. ...

No, it doesn't seem extensively automated.

There is no yoke on Airbuses at all, they used sidesticks and there is quite a bit of handflying in this clip. If I understand it right, they disable the...
Forum: Tech Log
28th Apr 2012, 16:39
Replies: 1,550
Views: 203,124
Posted By Gegenbeispiel

A330 AF447 report leak?

The Daily Telegraph claims to have a leaked draft of AF447 (central Atlantic, all lost) final acc. reprt. Doesn't look too credible/accurate to me. Comments?

Air France Flight 447: 'Damn it, we're...
6th Nov 2010, 22:01
Replies: 1,964
Views: 1,105,036
Posted By Gegenbeispiel

970/B vs 972/B

Dual ground: Oh ####, all my calculation work for nought ! #### but thanks!
6th Nov 2010, 21:08
Replies: 1,964
Views: 1,105,036
Posted By Gegenbeispiel

BillS (20:50): A very rough calculation...

BillS (20:50):

A very rough calculation (discounting the possibility of 2 to 4 problem engines on 1 airframe and assuming all of LH's are OK) gave me 0.0246348
(or 2.46348% for the bean...
6th Nov 2010, 20:38
Replies: 1,964
Views: 1,105,036
Posted By Gegenbeispiel

barit1, contractor25: 544: But equally, IPT...

barit1, contractor25: 544:

But equally, IPT inertia will prevent it from accelerating all that quickly. My guess would be that that with the IP compressor inop and impeding flow into the HP...
6th Nov 2010, 20:00
Replies: 1,964
Views: 1,105,036
Posted By Gegenbeispiel

catastrophic probability.

Hydroman400: 532: Sorry, I don't get it. 10^(-7) by 1/20 catastrophic gives 5*10^(-9) per engine . Now you have to multiply by the number of engines, 4, and you get 20*10^(-9) which is 2*10^(-8)....
6th Nov 2010, 16:12
Replies: 1,964
Views: 1,105,036
Posted By Gegenbeispiel

iamhives: according to a press item (Flight) a QF...

iamhives: according to a press item (Flight) a QF manager called Epstein is saying all of the IP turbine rotor - disc and blades - is missing. Can't see how a separated COMPRESSOR blade could have...
6th Nov 2010, 15:52
Replies: 1,964
Views: 1,105,036
Posted By Gegenbeispiel

md-100: the supposition is that secodary debris...

md-100: the supposition is that secodary debris (cowling bits?) damaged the data bus feeding the #1 engine EEC. #1 reportedly responded to control inputs in air, so the problem may have been to do...
6th Nov 2010, 15:18
Replies: 1,964
Views: 1,105,036
Posted By Gegenbeispiel

Vr-hhe: 407

"the probability of the disc being released, is (from memory) and causing a fatal accident, in the order of 10 to the power of -6."

10^(-6) . One in (only) a million. That seems very high. Is...
5th Nov 2010, 01:03
Replies: 1,964
Views: 1,105,036
Posted By Gegenbeispiel

308 tickii

A turbine (HP or IP) disc is not a fan blade, so the containment issues are quite different. It's very hot, not cold. It's much bigger. It's heavier. It's made of metal, not composite. It was...
Showing results 1 to 25 of 51
 


 
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