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Search: Posts Made By: HarryMann
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Forum: Rumours & News
8th Feb 2015, 22:36
Replies: 3,923
Views: 4,468,489
Posted By HarryMann

Inquisitor Sorry I misread... However I...

Inquisitor

Sorry I misread...

However I know a bit more about that regime and disagree still :)

separated flow is complex and agree demands lots of computing power

it's a matter of...
Forum: Rumours & News
8th Feb 2015, 15:41
Replies: 3,923
Views: 4,468,489
Posted By HarryMann

Inquisitor ..out of the profession for many...

Inquisitor

..out of the profession for many years now but don't necessarily
agree CFD is limited to low speed aerodynamics or altitudes.
no doubt even faster computerd are required and...
Forum: Rumours & News
8th Feb 2015, 12:28
Replies: 3,923
Views: 4,468,489
Posted By HarryMann

... in conversation with Leightman 957 it...

... in conversation with Leightman 957 it occurred to me (& maybe L957 too) that
stalling in general and higher altitude stalls particularly have been given much less
attention than those at low...
Forum: Rumours & News
4th Feb 2015, 14:01
Replies: 3,923
Views: 4,468,489
Posted By HarryMann

True Rananım Haptic feedback is good. Doesn't...

True Rananım
Haptic feedback is good. Doesn't get filtered out too easily
witness being tapped on the shoulder repeatedly... annoys!
Forum: Rumours & News
4th Feb 2015, 10:24
Replies: 3,923
Views: 4,468,489
Posted By HarryMann

Well I hope Volume will agree that a lot of swept...

Well I hope Volume will agree that a lot of swept wings are doctored
to force a root stall first so the mainplane itself contributes to
nose down (-) in and of itself.
Forum: Rumours & News
26th Jan 2015, 09:39
Replies: 3,923
Views: 4,468,489
Posted By HarryMann

Leightman957 said " The largely intact wings...

Leightman957 said "
The largely intact wings really present a puzzle. When we think of wings being pulled off by aerodynamic loads, and how relatively easy that is... "

What makes you say...
Forum: Rumours & News
25th Jan 2015, 16:46
Replies: 3,923
Views: 4,468,489
Posted By HarryMann

Isn't a, the speed of sound pretty well...

Isn't a, the speed of sound pretty well proportional to the Sq. Root of Abs. Temp?
If so aircraft Mach No. would decrease if Temp suddenly increased?

Have I got my knickers in a twist or am I...
Forum: Rumours & News
22nd Jan 2015, 21:33
Replies: 3,923
Views: 4,468,489
Posted By HarryMann

8/8ths Yes correct I wasn't suggesting the...

8/8ths

Yes correct
I wasn't suggesting the aircraft spiralled into the sea. Just that
a spiral dive could well have played a part sometime after max. altitude
Forum: Rumours & News
22nd Jan 2015, 07:33
Replies: 3,923
Views: 4,468,489
Posted By HarryMann

... thinking spiral dive and overspeed 'may' now...

... thinking spiral dive and overspeed 'may' now be equal likelihood
to that of stall.
Forum: Rumours & News
21st Jan 2015, 07:42
Replies: 3,923
Views: 4,468,489
Posted By HarryMann

... Just to add. It'd almost certainly be...

... Just to add.

It'd almost certainly be speed and attitude
management after the rapid climb phase that
will be 'critical'...

Going 'over the falls' with rapid reductions in
net energy...
Forum: Rumours & News
21st Jan 2015, 07:31
Replies: 3,923
Views: 4,468,489
Posted By HarryMann

Zorin Great & worthwhile contribution on...

Zorin

Great & worthwhile contribution on windshear/ momentum exchange and
energy exchange. Time these situations were programmed into
the AB autopilot in a somewhat more sensible fashion than...
Forum: Rumours & News
14th Jan 2015, 17:21
Replies: 3,923
Views: 4,468,489
Posted By HarryMann

Let's face it... hydrodynamic forces would be...

Let's face it... hydrodynamic forces would be capable of anything
imaginable and unimaginable entering water at speeds from 100 kts
upwards. Including twisting and if the tail struck first,...
Forum: Rumours & News
13th Jan 2015, 21:47
Replies: 3,923
Views: 4,468,489
Posted By HarryMann

... this idea that every single step anyone takes...

... this idea that every single step anyone takes or nut & bolt wasting away in a store always needs costing and charging (to someone or some budget or other) irks me..

really, not exactly...
Forum: Rumours & News
13th Jan 2015, 07:58
Replies: 3,923
Views: 4,468,489
Posted By HarryMann

Would the duplicates need to be 'duplicates' as...

Would the duplicates need to be 'duplicates' as such?

That is would they need to be fully armored (and so heavy) if they were
for ejecting over water surrounded by a floatation device... maybe a...
Forum: Rumours & News
11th Jan 2015, 08:21
Replies: 3,923
Views: 4,468,489
Posted By HarryMann

... and yes, agree again! THEN some...

... and yes, agree again!



THEN some SENSIBLE deductions can start :rolleyes:
Forum: Rumours & News
11th Jan 2015, 08:15
Replies: 3,923
Views: 4,468,489
Posted By HarryMann

Yes agree... Please stop pretending some of...

Yes agree...

Please stop pretending some of you have any idea about fluid
mechanics or flight crash dynamics...
Forum: Rumours & News
10th Jan 2015, 17:19
Replies: 3,923
Views: 4,468,489
Posted By HarryMann

http://www.pprune.org/members/440631-a0283 ...

http://www.pprune.org/members/440631-a0283
AO283


I think you are confused...

Spittfire tails did not come off. Perhaps you mean Hawker Typhoon
or Tempest? (which did lose tails during...
Forum: Rumours & News
8th Jan 2015, 22:08
Replies: 3,923
Views: 4,468,489
Posted By HarryMann

Yes I think Propduffer was being a bit...

Yes I think Propduffer was being a bit irreverent... ;)

On the glider pilot /updraught debate it has been my experience that when entering a thermal/updraught things in practice are not...
Forum: Rumours & News
4th Jan 2015, 23:22
Replies: 3,923
Views: 4,468,489
Posted By HarryMann

Yes, that's a fair point alright!

Yes, that's a fair point alright!
Forum: Rumours & News
4th Jan 2015, 20:02
Replies: 3,923
Views: 4,468,489
Posted By HarryMann

Etudiant anything 'other' than high speed...

Etudiant

anything 'other' than high speed aerodynamic stresses that could do that,?

Whatever you mean by high speed aerodynamic stresses... lots of things could. A kniife like object striking...
Forum: Rumours & News
3rd Jan 2015, 20:24
Replies: 3,923
Views: 4,468,489
Posted By HarryMann

me too esp. after listening to that excellent...

me too esp. after listening to that excellent Google sponsored
talk on 'Automation' that fireflybob kindly posted...

http://www.bbc.co.uk/programmes/b04wnkcs
Forum: Rumours & News
2nd Jan 2015, 22:05
Replies: 3,923
Views: 4,468,489
Posted By HarryMann

.. it probably comes from very high aspect ratio...

.. it probably comes from very high aspect ratio sailplanes, as well as some military aircraft (built like brick ****houses)

In the sailplane case, aileron would do very little or even a control...
Forum: Rumours & News
2nd Jan 2015, 11:44
Replies: 3,923
Views: 4,468,489
Posted By HarryMann

As I've been trying to make clear... terminal...

As I've been trying to make clear... terminal velocity has little meaning when there are massive vertical up or downraughts about...
Forum: Rumours & News
2nd Jan 2015, 09:50
Replies: 3,923
Views: 4,468,489
Posted By HarryMann

"Jientho"= Look...it isn't 'Math' it's...

"Jientho"=

Look...it isn't 'Math' it's primary school arithmetic !

Terminal velocity concepts apply only within the air mass you exist in...

if your T.V. is say 120 kts down and you're in a...
Forum: Rumours & News
1st Jan 2015, 23:24
Replies: 3,923
Views: 4,468,489
Posted By HarryMann

Terminal velocity would have nothing to do with...

Terminal velocity would have nothing to do with it though would it? If it's in downdraught !

Likewise, this misunderstanding is exactly why press & media are annoying the hell out of me (and some...
Forum: Rumours & News
1st Jan 2015, 10:52
Replies: 3,923
Views: 4,468,489
Posted By HarryMann

md80fanatic A good suggestion for an...

md80fanatic

A good suggestion for an effective (maybe temporary) solution... !
Showing results 1 to 26 of 26


 
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