PPRuNe Forums - Search Results
PPRuNe Forums

Go Back  PPRuNe Forums > Search Forums
Reload this Page >

Search Results

Register
FAQ
Calendar
Wikiposts
Today's Posts
Search
Vendor Directory
Search: Posts Made By: Mad (Flt) Scientist
Showing results 1 to 15 of 15
Search took 0.01 seconds.
Forum: Tech Log
28th Jan 2007, 03:54
Replies: 387
Views: 75,646
Posted By Mad (Flt) Scientist

If we're talking aboput what would be a "good"...

If we're talking aboput what would be a "good" design, the answer is that neither the variable stop nor the variable ratio designs actually achieve the equivalent of a manual system. Which gives the...
Forum: Tech Log
28th Jan 2007, 03:48
Replies: 387
Views: 75,646
Posted By Mad (Flt) Scientist

Hundreds, if not thousands. Companies design...

Hundreds, if not thousands.

Companies design derivatives, rather than all-new designs, partly to save on development costs, and the use of "similarity" and analysis in lieu of test is common.
...
Forum: Tech Log
20th Jan 2007, 21:43
Replies: 387
Views: 75,646
Posted By Mad (Flt) Scientist

The weakness is in the regulations, not the...

The weakness is in the regulations, not the aircraft. Airliners are not designed for these kinds of manoeuvres.

I believe the NTSB report says the fin failed at twice design load; the actual max...
Forum: Tech Log
19th Jan 2007, 21:24
Replies: 387
Views: 75,646
Posted By Mad (Flt) Scientist

Finally, can I draw your attentions towards the...

Finally, can I draw your attentions towards the recommendations section of the NTSB report:



Taken together, these recommendations are the reason we have cauitionary notes in our AFMs, and why...
Forum: Tech Log
19th Jan 2007, 21:19
Replies: 387
Views: 75,646
Posted By Mad (Flt) Scientist

The regulations for rudder load manoeuvres DO...

The regulations for rudder load manoeuvres DO require that you be able to sustain a single full authority control application, so it's not surprising that the 737's didn't suffer fin failures in that...
Forum: Tech Log
19th Jan 2007, 21:17
Replies: 387
Views: 75,646
Posted By Mad (Flt) Scientist

Actually, no I do not work for Airbus, and never...

Actually, no I do not work for Airbus, and never have. I have no reason to be biased towards them, or to blame anyone. I find it interesting that you assume that I must be coming from a position of...
Forum: Tech Log
19th Jan 2007, 13:10
Replies: 387
Views: 75,646
Posted By Mad (Flt) Scientist

What kind of nonsensible contribution do you find...

What kind of nonsensible contribution do you find in my statements?
It is a matter of simple engineering fact that aircraft are not designed - and not REQUIRED to be designed - to be immune to the...
Forum: Tech Log
18th Jan 2007, 23:25
Replies: 387
Views: 75,646
Posted By Mad (Flt) Scientist

It was ALREADY widely known, even before this...

It was ALREADY widely known, even before this accident, that full application of controls at speeds above Va - so called "manoeuvring speed" - could cause structural failure.

All that happened...
Forum: Tech Log
18th Jan 2007, 20:45
Replies: 387
Views: 75,646
Posted By Mad (Flt) Scientist

Yes, my apologies, I carelessly used "aircraft";...

Yes, my apologies, I carelessly used "aircraft"; obviously there are some aircraft that may be exceptions.
Forum: Tech Log
18th Jan 2007, 03:16
Replies: 387
Views: 75,646
Posted By Mad (Flt) Scientist

You just grounded every single aircraft flying ...

You just grounded every single aircraft flying

Once again, severe enough pilot inputs will cause catastrophic damage to every aircraft out there. There's no doubt about that; the only variable is...
Forum: Tech Log
17th Jan 2007, 02:06
Replies: 387
Views: 75,646
Posted By Mad (Flt) Scientist

To add to the above. On at least some of our...

To add to the above. On at least some of our (non-Airbus) designs which incorporate rudder travel limiters, the mechanics of travel limiting are similar to the Airbus system (i.e. fixed pedal/rudder...
Forum: Tech Log
31st Dec 2006, 17:24
Replies: 387
Views: 75,646
Posted By Mad (Flt) Scientist

Well, amongst other things that have happened...

Well, amongst other things that have happened (references are to the NTSB recommendations in the accident report)...

All the OEMs have put some kind of warning about excessive control use in their...
Forum: Tech Log
30th Dec 2006, 17:53
Replies: 387
Views: 75,646
Posted By Mad (Flt) Scientist

Yes, obviously I do, on the basis that inflight...

Yes, obviously I do, on the basis that inflight structural failure as a result of pilot inputs is Extremely Improbable. The regulations for this aspect of the design are "as safe" as any other...
Forum: Tech Log
30th Dec 2006, 15:49
Replies: 387
Views: 75,646
Posted By Mad (Flt) Scientist

This specific fin did not fail until in excess of...

This specific fin did not fail until in excess of twice design load, a margin of 33% over the requirement. So even if the repair did weaken the fin, it was still much stronger than it had to be....
Forum: Tech Log
27th Dec 2006, 16:43
Replies: 387
Views: 75,646
Posted By Mad (Flt) Scientist

I am frankly astonished that after all the...

I am frankly astonished that after all the warnings which were issued after this accident, regarding the potentially catastrophic effect of large rudder inputs AT SPEED EVEN BELOW VA, that anyone...
Showing results 1 to 15 of 15


 
Forum Jump

Contact Us - Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service

Copyright © 2024 MH Sub I, LLC dba Internet Brands. All rights reserved. Use of this site indicates your consent to the Terms of Use.