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: HarryMann
Showing results 1 to 32 of 32
Search took 0.00 seconds.
Forum: Tech Log
27th Sep 2011, 21:03
Replies: 1,688
Views: 407,619
Posted By HarryMann

Something to consider, for sure.. that...

Something to consider, for sure.. that intervening layer is always a 'head' problem



Radical, but reasonable
Forum: Tech Log
19th Sep 2011, 18:39
Replies: 1,688
Views: 407,619
Posted By HarryMann

I have to say, after many months with Bearfoil...

I have to say, after many months with Bearfoil and Lyman posts, however open-minded I do try to be, finding it all very enervating :(
Forum: Tech Log
4th Sep 2011, 00:23
Replies: 1,688
Views: 407,619
Posted By HarryMann

A good reason then, for having a proper stick...

A good reason then, for having a proper stick shaker and pusher in ALT mode, as almost all other civil jet aircraft have and have had for many decades now.

There also appears to be little reason...
Forum: Tech Log
31st Aug 2011, 10:18
Replies: 1,688
Views: 407,619
Posted By HarryMann

A very good question RF4 Let's hope for a...

A very good question RF4

Let's hope for a good answer... whatver it is
Forum: Tech Log
30th Aug 2011, 23:50
Replies: 1,688
Views: 407,619
Posted By HarryMann

Let us be clear... EASA Airbus knows closely...

Let us be clear...

EASA Airbus knows closely what a very high AoA A330 behaves like, did and does... assertions that a decent simulation of beyond the stall behaviour, couldn't be made... Pah!
...
Forum: Tech Log
30th Aug 2011, 21:59
Replies: 1,688
Views: 407,619
Posted By HarryMann

DW Right, :ok: apologies then... I...

DW

Right, :ok: apologies then...

I wonder if yourself or anyone else could explain this to me:

I think I'm overspeeding, so I'm holding the stick back, I've tried a wedge load of thrust...
Forum: Tech Log
30th Aug 2011, 18:11
Replies: 1,688
Views: 407,619
Posted By HarryMann

I don't think you should polarise this so much ...

I don't think you should polarise this so much

Few, if any, are denying that PF was way below par from manual takeover to end of story... with general crew shortcomings becoming apparent.

But...
Forum: Tech Log
29th Aug 2011, 23:25
Replies: 1,688
Views: 407,619
Posted By HarryMann

That first minute, I imagine PNF just was not...

That first minute, I imagine PNF just was not watching PF's inputs, or the result thereof... head-down flippig pages, maybe?
Forum: Tech Log
29th Aug 2011, 22:18
Replies: 1,688
Views: 407,619
Posted By HarryMann

Ah, but that would be quite another matter...

Ah, but that would be quite another matter surely... training and familiarity rather than sensory overload ?
Forum: Tech Log
29th Aug 2011, 19:57
Replies: 1,688
Views: 407,619
Posted By HarryMann

Duh! :O Thanks, I should have double-checked,...

Duh! :O Thanks, I should have double-checked, going back a long time now.

At least some other suggestions about fitness for control have come out of it :D

Something was up with the PF for sure,...
Forum: Tech Log
29th Aug 2011, 14:16
Replies: 1,688
Views: 407,619
Posted By HarryMann

The discussion seems to be oscillating between...

The discussion seems to be oscillating between flight systems and instrumentation
.. and human factors.

On the latter, both Ian and Dozy make good points...and no, they're not mutually exclusive...
Forum: Tech Log
26th Aug 2011, 23:19
Replies: 1,688
Views: 407,619
Posted By HarryMann

Taking this one stage further from Owain's...

Taking this one stage further from Owain's analysis etc. isn't it now likely that Airbus (on behalf of BEA?) have simulated the 330's recovery from such a fully developed stall attitudes and...
Forum: Tech Log
26th Aug 2011, 23:07
Replies: 1,688
Views: 407,619
Posted By HarryMann

Henra, correct, thanks and sorry for any...

Henra, correct, thanks and sorry for any confusion


should of course have been:



In fact, at high lift (significant ND elevator to effect recovery) the tail drag would produce a very useful...
Forum: Tech Log
26th Aug 2011, 17:19
Replies: 1,688
Views: 407,619
Posted By HarryMann

Owain, Your previous proviso that the...

Owain,
Your previous proviso that the downwash rule of thumb (0.4 * mainplane alpha) you used still applies in the flow-field behind a fully stalled wing (typ alpha, 35 ~ 45 degrees);...
Forum: Tech Log
26th Aug 2011, 13:16
Replies: 1,688
Views: 407,619
Posted By HarryMann

Well, the pilot was asking for 'more G' actually,...

Well, the pilot was asking for 'more G' actually, a moot point maybe, but true... and when not sensed (howsover) as 'more g' maybe that was the clue to something being very wrong... possibly, subject...
Forum: Tech Log
26th Aug 2011, 00:25
Replies: 1,688
Views: 407,619
Posted By HarryMann

Oh yes, another thing... one good...

Oh yes, another thing...



one good reason for this, is the reduced aerodynamic damping at altitude.

whether this is still taught, explicitly, or left to the control laws to sort out today,...
Forum: Tech Log
26th Aug 2011, 00:11
Replies: 1,688
Views: 407,619
Posted By HarryMann

So, now there are (4) different angles of...

So, now there are (4) different angles of interest in the pitch plane...? when only 2 are needed. Pitch and AoA

Correct me if I'm wrong... please
Forum: Tech Log
24th Aug 2011, 23:39
Replies: 1,688
Views: 407,619
Posted By HarryMann

So that's false even though the majority of...

So that's false

even though the majority of the descent was between those figures anyway.
Forum: Tech Log
24th Aug 2011, 12:00
Replies: 1,688
Views: 407,619
Posted By HarryMann

In theory, yes. In practice, it is marked up for...

In theory, yes. In practice, it is marked up for a reason, and this is not the first time time that a quick reference to it, when things aren't going according to plan, would explain all. How they...
Forum: Tech Log
24th Aug 2011, 11:01
Replies: 1,688
Views: 407,619
Posted By HarryMann

I suppose that depends on where the screens are,...

I suppose that depends on where the screens are, and whether real eyes prefer heads up or head down (psychologically speaking)... that is, a CCTV screen may present itself more in the heads up realm....
Forum: Tech Log
23rd Aug 2011, 17:27
Replies: 1,688
Views: 407,619
Posted By HarryMann

Is there really any pressing need to suppress it...

Is there really any pressing need to suppress it once the a/c is off the ground and once above a nominal (chosen) speed, until it's deactivated again upon landing

Yes, the AoA vane can...
Forum: Tech Log
22nd Aug 2011, 22:44
Replies: 1,688
Views: 407,619
Posted By HarryMann

Ian, yes, all that makes sense... When I first...

Ian, yes, all that makes sense...
When I first used term deep stall a few hundred posts ago, I did qualify it (knowing well the original meaning & the eybrows it would raise)

Controls Induced...
Forum: Tech Log
22nd Aug 2011, 02:44
Replies: 1,688
Views: 407,619
Posted By HarryMann

Possible, but we'll never know... The...

Possible, but we'll never know...

The re-trimming to maintain G as speed bled off due to aft-stick, seems to have played a good part in disguising the true state... one glance at that trim-wheel...
Forum: Tech Log
19th Aug 2011, 22:55
Replies: 1,688
Views: 407,619
Posted By HarryMann

Yes, they are (potentially dangerous), which is...

Yes, they are (potentially dangerous), which is no doubt why RRR mooted a stick shaker, and I (knowing someone would bite) extended the argument to a stick shaker... in a specific context.. that is...
Forum: Tech Log
19th Aug 2011, 01:57
Replies: 1,688
Views: 407,619
Posted By HarryMann

MadScientist Surely alpha AoA is NOT suspect...

MadScientist

Surely alpha AoA is NOT suspect in Alt2 degraded mode. In fact AoA is (or should be) one of the easiest and most reliable of all transducers and can easily be kept independent.....
Forum: Tech Log
19th Aug 2011, 00:40
Replies: 1,688
Views: 407,619
Posted By HarryMann

I think you lumping all the crew together... a...

I think you lumping all the crew together... a few of us here (maybe a lot) are pretty sure that PNF was heads down while some of this was going on and not aware of long term NU inputs, or position...
Forum: Tech Log
18th Aug 2011, 17:39
Replies: 1,688
Views: 407,619
Posted By HarryMann

Ok, enough of this THS speculation.. I (and...

Ok, enough of this THS speculation.. I (and others) mooted extreme concerns over this (misuse case) style of behaviour hundreds of posts ago... a few others didn't agree, or thought we were grasping...
Forum: Tech Log
18th Aug 2011, 01:12
Replies: 1,688
Views: 407,619
Posted By HarryMann

It might have though... I think a THS...

It might have though...

I think a THS position trim clacker might well have alerted PNF to something going very awry in pitch much earlier and at least have glanced at the wheel or pointed the...
Forum: Tech Log
15th Aug 2011, 11:25
Replies: 1,688
Views: 407,619
Posted By HarryMann

Indeed, but they had a Flight Engineer, remained...

Indeed, but they had a Flight Engineer, remained disciplined, at post, and focused on trying and re-trying everything possible...
Flight Engineer worked tirelessly at re-starting engines, and...
Forum: Tech Log
14th Aug 2011, 23:15
Replies: 1,688
Views: 407,619
Posted By HarryMann

Back to the importance of a scan including...

Back to the importance of a scan including attitude rather than airspeed when in any doubt of a/s.
A clear AoA display is another thing - some have suggested here that it is probably yet to be...
Forum: Tech Log
13th Aug 2011, 22:34
Replies: 1,688
Views: 407,619
Posted By HarryMann

OK, lets not confuse the issue with military...

OK, lets not confuse the issue with military references, I'm not silly enough to suggest that a sidestick is not the solution at high lateral and vertical 'g' loads in a confined space. It's also...
Forum: Tech Log
13th Aug 2011, 19:27
Replies: 1,688
Views: 407,619
Posted By HarryMann

Fair enough HeavyMetallist, I didn't make a very...

Fair enough HeavyMetallist, I didn't make a very good job of saying that it just isn't always possible to avoid the stall... we've had two or more in A-Buses fairly recently. And note too, this...
Showing results 1 to 32 of 32


 
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.