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10th May 2021, 17:47
Replies: 77
Views: 10,443
Posted By PEI_3721

Lightning days - radar AI 23, no name ? ...

Lightning days - radar AI 23, no name ?

Missiles: Firestreak was a generic trade name, Mk3 as used, was Blue Jay.
The development Firestreak Mk4 became Red Top.

Other developments included...
8th May 2021, 15:30
Replies: 6
Views: 1,950
Posted By PEI_3721

A pilot with remarkable vision and tenacity which...

A pilot with remarkable vision and tenacity which shaped modern aviation.
His insight and abilities relating to line pilots enabled successful operation of FBW and many developments thereafter.
...
Forum: Tech Log
13th Apr 2021, 07:50
Replies: 25
Views: 3,307
Posted By PEI_3721

As I understand there are two issues in the...

As I understand there are two issues in the question:

the category as defined by certification (max wt, config) - the speeds flown as recommended by the manufacturer.
the category to be...
Forum: Questions
12th Apr 2021, 21:39
Replies: 4
Views: 579
Posted By PEI_3721

Use airbrake / speed-brake early to achieve or...

Use airbrake / speed-brake early to achieve or regain the required flight path. This does not use more fuel; - if you are already above the required path / speed profile (a reducing energy level),...
Forum: Tech Log
9th Apr 2021, 12:00
Replies: 16
Views: 3,003
Posted By PEI_3721

Vessbot, thanks for that view. :ok: Semantics...

Vessbot, thanks for that view. :ok:
Semantics aside, the speed based deffiniton is widely used thus might have helped with a search; apparently not so.
The AoA aspect, not debated, also reflects...
9th Apr 2021, 08:27
Replies: 28
Views: 10,426
Posted By PEI_3721

A more interesting aspect is if this supports the...

A more interesting aspect is if this supports the need for strategic manned bombers - together with new standoff weapons.
ISTAR, maritime interests, surface-subsurface; strategic range, but tactical...
Forum: Tech Log
8th Apr 2021, 13:08
Replies: 16
Views: 3,003
Posted By PEI_3721

The description at #1 re the 737, is ‘Crossover...

The description at #1 re the 737, is ‘Crossover Speed’ - not AoA. This is the speed at which full opposite roll-control cannot maintain wings level flight with full rudder application due to failure....
Forum: Tech Log
24th Mar 2021, 12:16
Replies: 42
Views: 9,435
Posted By PEI_3721

Most large aircraft have an integral turn...

Most large aircraft have an integral turn co-ordination function within the yaw damper to minimise the lateral acceleration by applying a small amount of rudder in turning flight
The co-ordination...
19th Mar 2021, 19:06
Replies: 2,347
Views: 303,840
Posted By PEI_3721

Looks like Smiths instruments, cross pointer FD,...

Looks like Smiths instruments, cross pointer FD, SEP 6 type AP servo indicator, large rad alt, twin turbo prop - red beta lights?
Square shutter system indicators.
Perhaps a 748, BA flight deck...
17th Mar 2021, 22:44
Replies: 4
Views: 541
Posted By PEI_3721

Trog, thanks for the thoughts. The issue is not...

Trog, thanks for the thoughts. The issue is not specific to the RJ.
The background thinking is to explore accident situations, where an aircraft can be shown to meet aerodynamic / control...
28th Feb 2021, 13:46
Replies: 4
Views: 541
Posted By PEI_3721

The situation is slightly contrived, but one...

The situation is slightly contrived, but one which reappears in some LoC accidents.
The flight test aspect was many years go involving validation of FAR/JAR for the Russian Federation acting on...
25th Feb 2021, 17:49
Replies: 4
Views: 541
Posted By PEI_3721

Lateral control limiting with sideslip

Anyone have experience, flight or theory, of limiting lateral control in a situation involving sideslip from thrust asymmetry. Only able to use aileron for control due to a fixed rudder; e.g. one...
14th Feb 2021, 11:12
Replies: 130
Views: 38,695
Posted By PEI_3721

Learning from this thread:- Hindsight bias is...

Learning from this thread:-
Hindsight bias is an insidious and powerful influence; some posters acting as though they are a video referee, forgetting that aviation does not allow replays.
9th Feb 2021, 06:37
Replies: 130
Views: 38,695
Posted By PEI_3721

For those who use training scenarios after V1;...

For those who use training scenarios after V1; would these result from a single systems failure in your aircraft.
Are these realistic 'aircraft unable to fly' situations, or just 'lets think of a...
Forum: Tech Log
4th Feb 2021, 16:22
Replies: 10
Views: 1,626
Posted By PEI_3721

EASA - "… an objective to implement a 737 MAX AOA...

EASA - "… an objective to implement a 737 MAX AOA Integrity Enhancement to further reduce crew workload following single AOA failures and to improve the systems reliability, thus alleviating the...
3rd Feb 2021, 07:46
Replies: 258
Views: 38,210
Posted By PEI_3721

RR Avon / Hunter 'blue note' at high speed. I...

RR Avon / Hunter 'blue note' at high speed. I claim that intake / bleed duct noise should be considered as part of the engine.

Something similar with the Javelin, but that was often just before...
Forum: Tech Log
2nd Feb 2021, 21:26
Replies: 115
Views: 17,498
Posted By PEI_3721

Bergerie, ' a better solution' We might assume...

Bergerie, ' a better solution'
We might assume that a STS type of fix was considered / tested.
STS as I understand is only a single trim input, also like the 747 example it uses speed as the...
Forum: Tech Log
2nd Feb 2021, 13:58
Replies: 115
Views: 17,498
Posted By PEI_3721

'… why did Boeing go through with MCAS and not...

'… why did Boeing go through with MCAS and not just simply declaring the behaviour and asking for relief? '
This is likely to be the financial 'dazzle' of commonality with previous versions.
The...
Forum: Tech Log
1st Feb 2021, 21:32
Replies: 115
Views: 17,498
Posted By PEI_3721

"Lets try and do it right from the beginning."

Hi gums,
'… how the 'bus got certified with no control feedback …'

The simple answer is that they rewrote the rules. Airbus chose not to use stick force as a cue for speed, instead argued the...
Forum: Tech Log
31st Jan 2021, 09:32
Replies: 115
Views: 17,498
Posted By PEI_3721

fdr, thank you for the extensive background. ...

fdr, thank you for the extensive background.

Re 'angle grinder' fixes. One of the first western public conferences where TsAGI presented a paper on high alpha aerodynamics. - In answer to a...
29th Jan 2021, 18:03
Replies: 130
Views: 38,695
Posted By PEI_3721

FullWings, you observe two important points. ...

FullWings, you observe two important points.

First in simulation; either the situations are not sufficiently challenging, or that we behave differently in a simulator than we might in reality....
29th Jan 2021, 15:50
Replies: 849
Views: 805,450
Posted By PEI_3721

Some aircraft may require 'follow through' from...

Some aircraft may require 'follow through' from certification.
e.g. autopilot runaway above 1000 ft may use a 4 sec reaction time. Below 1000 ft, 2 sec could apply providing the pilots is 'hands on'...
Forum: Tech Log
16th Jan 2021, 12:55
Replies: 115
Views: 17,498
Posted By PEI_3721

gums, Detent, et al, caution with specific...

gums, Detent, et al, caution with specific comparisons.
Following on from zzuf, good refs; - associating the A320 with feel and bob wts could be misleading.

Airbus chose the combination of...
16th Jan 2021, 09:55
Replies: 186
Views: 31,403
Posted By PEI_3721

Battle Fight direct from Germany. ...

Battle Fight direct from Germany.


https://cimg7.ibsrv.net/gimg/pprune.org-vbulletin/2000x1626/b60e1950_c713_436e_b477_38e8f3d3c3d1_ded16638134460d6c8c6566aa8a4acb311b3fef3.jpeg


Boss had...
15th Jan 2021, 21:52
Replies: 186
Views: 31,403
Posted By PEI_3721

Dan Gerous, re 'expanding rod'. Yes the...

Dan Gerous, re 'expanding rod'.
Yes the photograph shows a pattern normally associated with an expanding rod warhead.
Red Top - IR homing on the flare; typically, the dark doughnut explosive ring...
Showing results 1 to 25 of 924
 


 
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