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
 
Page 1 of 2
1
2
Search: Posts Made By: HarryMann
Showing results 1 to 35 of 40
Search took 0.01 seconds.
Forum: Tech Log
23rd Apr 2011, 00:45
Replies: 3,893
Views: 1,536,925
Posted By HarryMann

De Sitter Wing Design

There is (or always was) a fundamental difference between approaches... Airbus went a bit more for minimal area with very high lift devices and Boeing (usually) adopted a 'big wing', lower...
Forum: Tech Log
22nd Apr 2011, 23:48
Replies: 3,893
Views: 1,536,925
Posted By HarryMann

AUV-EE Drag & terminal fall speed

AUV-EE After my drag and terminal velocity theoresing (thats all it was, but should be valid for any fluid)

Water Viscosity at High Pressure and Temperature...
Forum: Tech Log
22nd Apr 2011, 23:28
Replies: 3,893
Views: 1,536,925
Posted By HarryMann

Yes, I've been of the opinion early on (original...

Yes, I've been of the opinion early on (original Rumours &News posts) that there is more to this than a simple loss of control. So may say coincidences.. I often say co-incidences of events - and...
Forum: Tech Log
16th Apr 2011, 22:25
Replies: 3,893
Views: 1,536,925
Posted By HarryMann

Well, you might think that, but I couldn't...

Well, you might think that, but I couldn't possibly comment...

But will, anyway.

If the viscosity changes significantly with depth (x 2), then Reynolds number does too (for a given free-fall...
Forum: Tech Log
14th Apr 2011, 23:21
Replies: 3,893
Views: 1,536,925
Posted By HarryMann

Yes Grity thanks, good way of looking at it....

Yes Grity thanks, good way of looking at it. We'll assume up to circa 100g, anywhere form 60 to 100 ++ seems the ball park actually. Certainly fits with some of the post mortem findings .
Forum: Tech Log
14th Apr 2011, 00:30
Replies: 3,893
Views: 1,536,925
Posted By HarryMann

Wouldn't you need to know exactly how deep was...

Wouldn't you need to know exactly how deep was the penetration of the sea surface? Have we any information on 'compliance' at water surfaces in these cases.

=================

Whilst we can...
Forum: Tech Log
13th Apr 2011, 14:29
Replies: 3,893
Views: 1,536,925
Posted By HarryMann

My thoughts too, since Svarin pointed out the...

My thoughts too, since Svarin pointed out the WRG: WRN: difference
Forum: Tech Log
9th Apr 2011, 23:04
Replies: 3,893
Views: 1,536,925
Posted By HarryMann

jc theory

So, jc, you're indicating you think that the VS came off quite a long way into the incident and thus was not an initiating nor early failure?
Forum: Tech Log
8th Apr 2011, 22:42
Replies: 3,893
Views: 1,536,925
Posted By HarryMann

This is the sort of event chain that I seem to...

This is the sort of event chain that I seem to keep envisaging... Maybe because I've had a wing-drop stall (tip drag-stall, close to the ground), that having recovered, led (almost inevitably) to a...
Forum: Tech Log
4th Apr 2011, 23:05
Replies: 3,893
Views: 1,536,925
Posted By HarryMann

Why so? deep stall or spin, vectors look...

Why so?

deep stall or spin, vectors look about right?
Forum: Tech Log
3rd Apr 2011, 21:36
Replies: 3,893
Views: 1,536,925
Posted By HarryMann

Of course, of initial interest, is exactly where...

Of course, of initial interest, is exactly where the wreckage has been found.... ?
Forum: Tech Log
10th Mar 2011, 00:00
Replies: 3,893
Views: 1,536,925
Posted By HarryMann

Is this how Somali pirates seem to know just...

Is this how Somali pirates seem to know just where their next target ship is and seem to manage to intercept so easily?
Forum: Tech Log
21st Jan 2011, 22:04
Replies: 3,893
Views: 1,536,925
Posted By HarryMann

'Man' searches are rarely 50% succesful n this...

'Man' searches are rarely 50% succesful n this household :ugh:

Unless searching for something a female has lost or mislaid which ups the % a bit :)
Forum: Tech Log
21st Sep 2010, 00:07
Replies: 3,893
Views: 1,536,925
Posted By HarryMann

.. slowly stooping to clutching at straws, maybe....

.. slowly stooping to clutching at straws, maybe.


Static pressure sensing is not about movement of air through ports, its about transmission of pressure signals through them, involving minimal...
Forum: Tech Log
12th Sep 2010, 01:12
Replies: 3,893
Views: 1,536,925
Posted By HarryMann

Mr Optimistic I believe it was analysis of...

Mr Optimistic

I believe it was analysis of the Crew Rest Module and various catering modules and perhaps o/h lockers that the BEA referred to when determining the likely(est) speed & trajectory...
Forum: Tech Log
9th Sep 2010, 00:36
Replies: 3,893
Views: 1,536,925
Posted By HarryMann

... and we could also postulate that most of...

... and we could also postulate that most of those found might have been in one section, that happened to experience less ultimate 'G' than others.
Except that they appeared reasonably spread...
Forum: Tech Log
8th Sep 2010, 02:49
Replies: 3,893
Views: 1,536,925
Posted By HarryMann

Nor I, assuming (like you) that the statements...

Nor I, assuming (like you) that the statements were comparative (to a normal descent), just enhanced values of vertical and typical or somewhat less than normal horz component...

One really...
Forum: Tech Log
4th Sep 2010, 11:31
Replies: 3,893
Views: 1,536,925
Posted By HarryMann

A moot point maybe, but possibly a bad analogy in...

A moot point maybe, but possibly a bad analogy in this context - engine crankshafts usually run through their torsional vibration speeds, sometimes work near their 2nd harmonic (I think!). Torsional...
Forum: Tech Log
16th Aug 2010, 00:22
Replies: 3,893
Views: 1,536,925
Posted By HarryMann

25 ft/s at touchdown, during and after the...

25 ft/s at touchdown, during and after the flare... ?
Forum: Tech Log
12th Aug 2010, 22:08
Replies: 3,893
Views: 1,536,925
Posted By HarryMann

The only way I can see is the a/c hit hard and...

The only way I can see is the a/c hit hard and quite fast, possibly with one low wing.
Lost a whole wing in a bounce, which altered its trajectory. The wing with its fuel diverged over orders of...
Forum: Tech Log
22nd Jul 2010, 00:53
Replies: 3,893
Views: 1,536,925
Posted By HarryMann

Boxes that eject on impact and float were...

Boxes that eject on impact and float were mentioned some way back, believe have a military existsence, not uncommon... but sorry, haven't the time to find the posts or the synapses to remember what...
Forum: Tech Log
13th Jul 2010, 10:29
Replies: 3,893
Views: 1,536,925
Posted By HarryMann

One would hope that everything about their...

One would hope that everything about their post-service state and condition is known and documented. Whether they are subsequently scrapped or stored for posterity....?:rolleyes:
Forum: Tech Log
11th Jul 2010, 02:05
Replies: 3,893
Views: 1,536,925
Posted By HarryMann

mm43 Is this categorically correct do...

mm43



Is this categorically correct do you think?
What air data value and what use of that data would really be critical or compromised by a throughput a few milliseconds slower.
And if an...
Forum: Tech Log
8th Jul 2010, 01:03
Replies: 3,893
Views: 1,536,925
Posted By HarryMann

The software that runs this forum ...

The
software
that
runs
this
forum
doesn't
seen
to
recognize
Forum: Tech Log
28th Jun 2010, 11:16
Replies: 3,893
Views: 1,536,925
Posted By HarryMann

Ian, So that is a genuine instrumentation...

Ian,

So that is a genuine instrumentation behaviour in exceptionally high humidity air masses...? Then it throws another potentially broken egg into the basket !
Forum: Tech Log
15th Jun 2010, 00:36
Replies: 3,893
Views: 1,536,925
Posted By HarryMann

Could we have at least some guide to your...

Could we have at least some guide to your qualifications to make that statement please?
Forum: Tech Log
14th Jun 2010, 00:49
Replies: 3,893
Views: 1,536,925
Posted By HarryMann

In smooth air when you know what's what and have...

In smooth air when you know what's what and have been there before....

or when it's rough as hell and you don't really know what's what?
Forum: Tech Log
8th Jun 2010, 01:31
Replies: 3,893
Views: 1,536,925
Posted By HarryMann

Alternative Air speed sensor Hot-wire...

Alternative Air speed sensor
Hot-wire anemometer, hot film anemometer? Would need a filtered air feed (which might ice uip, unless it was designed like a Dyson bagless vacuum), but they last for...
Forum: Tech Log
7th Jun 2010, 00:28
Replies: 3,893
Views: 1,536,925
Posted By HarryMann

Agree too... maybe because they theorised that...

Agree too... maybe because they theorised that until it was too lat, the view in-use showed short-range weather blocking what was behind, so didn't want to suggest other reasons the Wx radar might...
Forum: Tech Log
6th Jun 2010, 11:09
Replies: 3,893
Views: 1,536,925
Posted By HarryMann

Not really, a documentary like that is aimed...

Not really, a documentary like that is aimed simply at getting the idea across about what may have gone wrong/happened and why. Exact figures and exact simulation affects not one jot the theory on...
Forum: Tech Log
1st Jun 2010, 00:41
Replies: 3,893
Views: 1,536,925
Posted By HarryMann

The whole aircraft should basically hang together...

The whole aircraft should basically hang together (as far as compromising the pax cabin) at 9g deceleration...

I have no idea though, what decel 'g' in a flat ditching situation would fail the...
Forum: Tech Log
30th May 2010, 01:23
Replies: 3,893
Views: 1,536,925
Posted By HarryMann

What pray, is a high speed hole? Or even a...

What pray, is a high speed hole?
Or even a high-speed hole...

Please forgive me, if I cannot force myself to be more credulous :rolleyes:
Forum: Tech Log
28th May 2010, 00:07
Replies: 3,893
Views: 1,536,925
Posted By HarryMann

Unlikely and offers a rather pessimistic view on...

Unlikely and offers a rather pessimistic view on structural engineers' comprehension...
Forum: Tech Log
21st May 2010, 10:08
Replies: 3,893
Views: 1,536,925
Posted By HarryMann

I really do hope BEA or the search team...

I really do hope BEA or the search team management are keeping a watching eye on this thread - maybe 'blue sky' thinking is inappropriate but that's what comes to mind...
Forum: Tech Log
14th May 2010, 21:41
Replies: 3,893
Views: 1,536,925
Posted By HarryMann

Now you've made me wonder how just those bodies...

Now you've made me wonder how just those bodies found (and maybe many more) exited the fuselage... if it didn't break up?
Showing results 1 to 35 of 40
 
Page 1 of 2
1
2


 
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.