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Search: Posts Made By: HarryMann
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Forum: Tech Log
13th Aug 2011, 09:13
Replies: 1,998
Views: 510,046
Posted By HarryMann

IMHO, if that is the modus operandi then it needs...

IMHO, if that is the modus operandi then it needs looking at too..

Any 'spike' triggering the Stall Warning, should ensure that it sounds for a minimum time. (say 1 or 2 seconds) OR continue until...
Forum: Tech Log
13th Aug 2011, 00:38
Replies: 1,998
Views: 510,046
Posted By HarryMann

Of course it was recoverable... And let's...

Of course it was recoverable...

And let's call it a final descent, or similar, not a 'death plunge' - no one was consciously diving off a hotel roof !
Forum: Tech Log
13th Aug 2011, 00:27
Replies: 1,998
Views: 510,046
Posted By HarryMann

Solution = avoid STALLING - Nah!

GarageYears

Mmmm. :=
Seems a naive viewpoint to me... it's this kind of thinking that has actually caused such an alarmingly poor crew response in this situation! (i.e. no need for the native...
Forum: Tech Log
1st Aug 2011, 01:23
Replies: 1,998
Views: 510,046
Posted By HarryMann

Mike, Lots of peeps have mentioned the...

Mike,

Lots of peeps have mentioned the initial response to A/P disconnect, and PJ2 having direct experience of the type, went to some trouble a while back explaining his approach, and the whys...
Forum: Tech Log
1st Aug 2011, 00:42
Replies: 1,998
Views: 510,046
Posted By HarryMann

What is 'auto dropout' ?

What is 'auto dropout' ?
Forum: Tech Log
1st Aug 2011, 00:41
Replies: 1,998
Views: 510,046
Posted By HarryMann

More like... PF heard a 'different' airflow...

More like... PF heard a 'different' airflow sound, due to grossly high incidence, never heard it before , incorrectly associated it with high airspeed sound ?
Forum: Tech Log
1st Aug 2011, 00:32
Replies: 1,998
Views: 510,046
Posted By HarryMann

Mike X, no you wouldn't. You could be falling at...

Mike X, no you wouldn't. You could be falling at 20,000 fpm and not know it, you only pick up accelerations - and never believe your senses blind - that's what the instruments are for, and attitude...
Forum: Tech Log
31st Jul 2011, 22:36
Replies: 1,998
Views: 510,046
Posted By HarryMann

But I know a youngster or two today that refuse...

But I know a youngster or two today that refuse to have a map in the car (for when their satnav gets them lost)

I can only conclude they don't want to show their ignorance to their girlfriends by...
Forum: Tech Log
30th Jul 2011, 23:33
Replies: 1,998
Views: 510,046
Posted By HarryMann

PJ2

PJ2

That clarifies it fine, thanks
Forum: Tech Log
30th Jul 2011, 22:25
Replies: 1,998
Views: 510,046
Posted By HarryMann

Seat belts, straps//

Fact is.let's say PF was only strapped waist belt..
Would that prevent accurate SS in moderate to strong turbulence ?
Forum: Tech Log
30th Jul 2011, 13:33
Replies: 1,998
Views: 510,046
Posted By HarryMann

Sounds like a question for someone like PJ2, to...

Sounds like a question for someone like PJ2, to give a neutral appraisal of how difficult a task this might be, and in Alt Law too, so that basic protections are lost
Forum: Tech Log
30th Jul 2011, 10:23
Replies: 1,998
Views: 510,046
Posted By HarryMann

I'm sure we can take some more of that sort of...

I'm sure we can take some more of that sort of attitude... provided it comes with some sort of logical explanation :rolleyes:
Forum: Tech Log
30th Jul 2011, 09:41
Replies: 1,998
Views: 510,046
Posted By HarryMann

Has anyone else gained the impression that PF...

Has anyone else gained the impression that PF actions, appear to assume 'Normal' law ? - despite acknowledgements of Alternate reversion soon after the AP disconnect sequence.

If so, does this...
Forum: Tech Log
30th Jul 2011, 01:17
Replies: 1,998
Views: 510,046
Posted By HarryMann

Mmm, wrong...:= I really thought you'd...

Mmm, wrong...:=

I really thought you'd analyse that differently.. This accident throws up much more important things than those already known (pitot icing propensity)
Forum: Tech Log
30th Jul 2011, 00:27
Replies: 1,998
Views: 510,046
Posted By HarryMann

Almost the last PF statement was that he'd been...

Almost the last PF statement was that he'd been full NU for pretty well the whole episode...
This seems to be what the Captain picked up on, and reversed his advice
He probably then realised this...
Forum: Tech Log
29th Jul 2011, 17:47
Replies: 1,998
Views: 510,046
Posted By HarryMann

Not at the -ve and +ve extremes, as with a...

Not at the -ve and +ve extremes, as with a revcounter, we have an Orange area

But yes, its not all so simple... but nothing is, What is simple and the Captain could have pointed straight at it.....
Forum: Tech Log
29th Jul 2011, 12:50
Replies: 1,998
Views: 510,046
Posted By HarryMann

Not necessarily, esp. if only in pitch... (gawd...

Not necessarily, esp. if only in pitch... (gawd :rolleyes:, many were stalling and recovering gliders and even powered aircraft before they had a full driving licence. I'm sure some were recovering...
Forum: Tech Log
27th Jul 2011, 13:26
Replies: 1,998
Views: 510,046
Posted By HarryMann

JD-EE This is nothing to do with circling...

JD-EE
This is nothing to do with circling (thermalling) in a steady moving air mass (which was the question).

It seems to approximate a description of dynamic soaring through an altitude range...
Forum: Tech Log
26th Jul 2011, 12:01
Replies: 1,998
Views: 510,046
Posted By HarryMann

Indeed, to confirm, the drag curve consists of...

Indeed, to confirm, the drag curve consists of profile drag + induced drag + Mach drag. The absolute value of the sum of these can indeed increase below a minimum drag speed, particularly approaching...
Forum: Tech Log
17th Jul 2011, 14:52
Replies: 1,998
Views: 510,046
Posted By HarryMann

It might and would be awful to contemplate if...

It might and would be awful to contemplate if so... there must be others.
The corollary if true, is that even with protections, it must surely be acknowledged as still the wrong thing to do.. what...
Forum: Tech Log
17th Jul 2011, 13:30
Replies: 1,998
Views: 510,046
Posted By HarryMann

Well, there could be some debate here.. its often...

Well, there could be some debate here.. its often said you only need to do the sums about a (any) fixed point (usually the c.g) and resolve them all out as a single force vector together with a...
Forum: Tech Log
16th Jul 2011, 13:55
Replies: 1,998
Views: 510,046
Posted By HarryMann

Yes DJ77, I wonder whether this 'lack of...

Yes DJ77, I wonder whether this 'lack of persistence' with ND inputs, was because no time in training (since ab initio) seems to have been allocated to 'stall recovery' - whereas 'stall avoidance'...
Forum: Tech Log
15th Jul 2011, 12:21
Replies: 1,998
Views: 510,046
Posted By HarryMann

Yes, very much so... I find there is always...

Yes, very much so...

I find there is always a lot of confusion between separated flow, turbulent flow and laminar flow. The later two are boundary layer states, the former (whilst to some extent...
Forum: Tech Log
15th Jul 2011, 11:59
Replies: 1,998
Views: 510,046
Posted By HarryMann

Ah yes, thanks Just covering as you say...

Ah yes, thanks

Just covering as you say either end of the spectrum, though drag buckets due to a cruise Cl laminar regime also can have a Mach element (be a function of).
Forum: Tech Log
15th Jul 2011, 01:17
Replies: 1,998
Views: 510,046
Posted By HarryMann

Can't see where I suggested we were at high mach...

Can't see where I suggested we were at high mach no:)

Yes, we can easily be stalled at High Mach, just as in incompressible flow (that's what the lower cruise buffet boundary and coffin corner is...
Forum: Tech Log
14th Jul 2011, 14:56
Replies: 1,998
Views: 510,046
Posted By HarryMann

Yes and when in a highly separated flow regime...

Yes and when in a highly separated flow regime (fully stalled foils), extreme AoA, we may typically dispense with the assumption we are flying, per se, and often revert to just summing the Resultant...
Forum: Tech Log
14th Jul 2011, 01:50
Replies: 1,998
Views: 510,046
Posted By HarryMann

Reflecting on my miniscule PF time (c.f. PNF &...

Reflecting on my miniscule PF time (c.f. PNF & SLF)

I do not think I would like being handed an aircraft in much turbulence of any kind, some way out of S&L wings level trim, with a FCS stick...
Forum: Tech Log
14th Jul 2011, 01:31
Replies: 1,998
Views: 510,046
Posted By HarryMann

Stepping in for gums (temporarily and with...

Stepping in for gums (temporarily and with apologies):

Aft c.g.

Easier to stall
Easier to unstall (in theory) *

* Unfortunately though, a/c may well have departed - so you could be too...
Forum: Tech Log
12th Jul 2011, 13:50
Replies: 1,998
Views: 510,046
Posted By HarryMann

So... Have some airlines really been...

So...

Have some airlines really been training NU inputs and HITHRUST for stall recoveries when this seems to produce further (and usually unwanted) NU trimming?

Has there really been a history...
Showing results 1 to 29 of 29


 
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