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Search: Posts Made By: RetiredF4
Showing results 1 to 35 of 49
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Forum: Tech Log
4th Nov 2011, 00:07
Replies: 1,688
Views: 406,926
Posted By RetiredF4

Im waiting. Just read my post again....

Im waiting.



Just read my post again. I was referring to an increase in g load beginning at 02:11:52 until 02:12:30 from 0.7G to 1.1 G, when power was in idle and elevators had been and stayed...
Forum: Tech Log
3rd Nov 2011, 20:42
Replies: 1,688
Views: 406,926
Posted By RetiredF4

We discussed the training or the lack of it at...

We discussed the training or the lack of it at length, not only in this thread but in several others. To ride that old horse in comment of a serious issue from myself is sensless. You know my answer...
Forum: Tech Log
3rd Nov 2011, 19:56
Replies: 1,688
Views: 406,926
Posted By RetiredF4

No, i would not agree. You want to pull my leg...

No, i would not agree. You want to pull my leg with such BS.



You need no fast jet expierience to feel the difference between 1.0 g and 0.8 g. My 75Kg would be 60Kg. And that reduction from...
Forum: Tech Log
3rd Nov 2011, 16:22
Replies: 1,688
Views: 406,926
Posted By RetiredF4

All quotes Clandestino Exactly those...

All quotes Clandestino



Exactly those i was refering, if you noted. But they are not incorporated in the pages 30 + 31, where they would directly show the outcome of the actions. Loadfactor...
Forum: Tech Log
3rd Nov 2011, 10:04
Replies: 1,688
Views: 406,926
Posted By RetiredF4

I looked at those too, and i came to a differetn...

I looked at those too, and i came to a differetn result and i´m not giving up yet. Those pages miss one vital information, the outcome of the actions in relation to airframe loadfactor. As the SS is...
Forum: Tech Log
2nd Nov 2011, 19:13
Replies: 1,688
Views: 406,926
Posted By RetiredF4

FDR traces

Thank you for confirmation.

Another bit i found in the FDR traces and i like to point to:
Look at Page 111 of the BEA 3. interim report second trace from bottom. It is the normal acceleration...
Forum: Tech Log
2nd Nov 2011, 15:32
Replies: 1,688
Views: 406,926
Posted By RetiredF4

SS inoperative

When reviewing the FDR traces for my last contribution i stumbled on the the bottom lines on page 108 of BEA interim report N. 3.

At about 02:11:40 their is a spike indicating FO SS inoperative...
Forum: Tech Log
2nd Nov 2011, 12:23
Replies: 1,688
Views: 406,926
Posted By RetiredF4

Hazelnuts39

I might try.

At 02:10:51 the stall warning sounded. AOA was 6°, pitch was 10°, elevators about 5° noseup, THS at -3° NU. At that point the stab trim starts taking over the load of the elevators...
Forum: Tech Log
2nd Nov 2011, 10:42
Replies: 1,688
Views: 406,926
Posted By RetiredF4

clandestino

Hi Clandestino,



I have a chuckle on this one, like it actually. I still have some left hand gloves in good shape and missing the right ones with holes in the thumb.
I was flying in the...
Forum: Tech Log
2nd Nov 2011, 09:12
Replies: 1,688
Views: 406,926
Posted By RetiredF4

Control

To have control there has to be an understanding how things (trim, stall warning, LAW, aerodynamics) work.
Lets face the fact, that this knowledge probably was not present with the crew of AF447....
Forum: Tech Log
2nd Nov 2011, 08:21
Replies: 1,688
Views: 406,926
Posted By RetiredF4

@DW

Read my posts, and read yours. I did not start comparing, that has been yourself.



I might not know the design of the system, but i can get a grasp on how it functions looking from the pilots...
Forum: Tech Log
1st Nov 2011, 22:54
Replies: 1,688
Views: 406,926
Posted By RetiredF4

DW

Autotrim is commanded by the FCPC´s, not by the pilot. The pilot is ordering a loadfctor and the FCPC commands the elevators (short term) and THS trim (long term) to achieve and to maintain this...
Forum: Tech Log
1st Nov 2011, 20:14
Replies: 1,688
Views: 406,926
Posted By RetiredF4

Thrustworthy values

Exactly on that, not having thrustworthy values.
With thrustworthy values the protections would stop the trim reaching special values , without those values it will continue to trim also it can...
Forum: Tech Log
1st Nov 2011, 13:37
Replies: 1,688
Views: 406,926
Posted By RetiredF4

DW

Hi DW, being evasive?



I described a flight phase as opposite to another flight phase (like one being close to the ground) where autotrim could help in Alt2 even at the extremes of the flight...
Forum: Tech Log
31st Oct 2011, 22:13
Replies: 1,688
Views: 406,926
Posted By RetiredF4

DW

Dozy,

there is no situation in cruise, where autotrim is improving a situation in ALT2 like that encountered by AF 447. If you can think of one, let me know. As we know, autotrim is inhibited ...
Forum: Tech Log
31st Oct 2011, 16:41
Replies: 1,688
Views: 406,926
Posted By RetiredF4

Although that question is not pointed at me, i...

Although that question is not pointed at me, i like to comment on it.
The whole FBW-system as it is designed would not work without autotrim. Fundamentally nothing is wrong with it except the point...
Forum: Tech Log
30th Oct 2011, 20:08
Replies: 1,688
Views: 406,926
Posted By RetiredF4

mm43 we had this discussion in thread 3 ages...

mm43

we had this discussion in thread 3 ages ago. I think it was TAKATA who explained it there.

The stopping of the THS trim is a function of the static longitudonal stability protection and...
Forum: Tech Log
29th Oct 2011, 20:27
Replies: 1,688
Views: 406,926
Posted By RetiredF4

Departure

Sorry to object here.

Imho with the term "departure" we adress the point, where the aircraft leaves the region of controlled flight (i.e. departs the flight regime).

There is no doubt, that...
Forum: Tech Log
27th Oct 2011, 09:21
Replies: 1,688
Views: 406,926
Posted By RetiredF4

military + civil

Before the thread drifts to the area civil v. military pilots, grant me (as an old military pilot) a few remarks of caution here.

Where the sun is shining, also shades can be found.

Imho there...
Forum: Tech Log
26th Oct 2011, 07:49
Replies: 1,688
Views: 406,926
Posted By RetiredF4

gums

gums, i have to object on that one concerning the F4.
I´ve flown more than 3000 hours in that bird in all flight conditions, and the feedback was like natural in all flight conditions from stall to...
Forum: Tech Log
25th Oct 2011, 21:26
Replies: 1,688
Views: 406,926
Posted By RetiredF4

Those speed corrections are normally derived from...

Those speed corrections are normally derived from seperate sources (like a ram air inlet in the horizontal stabilizer in the F4). No rocket science or electrical signaling necessary.
Forum: Tech Log
25th Oct 2011, 20:00
Replies: 1,688
Views: 406,926
Posted By RetiredF4

True, but it is no argument here. All of those...

True, but it is no argument here. All of those aircraft have an artificial airspeed dependent control force. It´s not relevant how the feel is generated, wether by cabels and pulleys or by speed...
Forum: Tech Log
25th Oct 2011, 15:02
Replies: 1,688
Views: 406,926
Posted By RetiredF4

Concerning flying, military fighters use SS. But...

Concerning flying, military fighters use SS. But the equivalent of formula 1, like Red Bull air racing, or the machines flown in Reno-air races............??
Forum: Tech Log
24th Oct 2011, 17:10
Replies: 1,688
Views: 406,926
Posted By RetiredF4

Do you have a reference for that one? ...

Do you have a reference for that one?



With your above statement you do exactly the thing, you accuse others.

Welcome in your world.
Forum: Tech Log
22nd Oct 2011, 10:36
Replies: 1,688
Views: 406,926
Posted By RetiredF4

It is or it should, but as it is obvious it did...

It is or it should, but as it is obvious it did not work out well in this case and the question remains why? What is necessary, that the simple application of a procedure "pitch and power" works out...
Forum: Tech Log
21st Oct 2011, 14:50
Replies: 1,688
Views: 406,926
Posted By RetiredF4

First, i dont think that the STALL warning is...

First, i dont think that the STALL warning is derived from one or all three AOA vanes and not being run through some gizmo until finally used together with some other inputs like speed, loadfactor....
Forum: Tech Log
21st Oct 2011, 12:47
Replies: 1,688
Views: 406,926
Posted By RetiredF4

I was used to a round one. AOA...

I was used to a round one. AOA (http://www.simmeters.com/img/p/14-13-large.jpg)

The BUSS is again a cocktail of information with different sources and therefore inherent failure and error...
Forum: Tech Log
21st Oct 2011, 09:58
Replies: 1,688
Views: 406,926
Posted By RetiredF4

AOA

Stall-aural warning is an on/off indication, AOA is also a trend indication. Just look at it, see the AOA increase and expect trouble if you dont stop it prior stall range. If STALL sounds, you can...
Forum: Tech Log
6th Oct 2011, 19:34
Replies: 1,688
Views: 406,926
Posted By RetiredF4

1. Stick and rudder, 1944, Wolfgang Langewiesche...

1. Stick and rudder, 1944, Wolfgang Langewiesche (http://www.ebay.de/itm/STICK-AND-RUDDER-EXPLANATION-OF-THE-ART-OF-FLYING-/220815491948?pt=Antiquarian_Collectible&hash=item3369a1036c#ht_709wt_950) ...
Forum: Tech Log
3rd Sep 2011, 16:27
Replies: 1,688
Views: 406,926
Posted By RetiredF4

I think it was the increased drag and not the...

I think it was the increased drag and not the higher AOA, i agree though that it looks like it did not help in leveling the wings.



I tend to agree. Dihedral helped, sweep back did not help.
...
Forum: Tech Log
2nd Sep 2011, 12:25
Replies: 1,688
Views: 406,926
Posted By RetiredF4

I was answering upon DozyWannabes remark ...

I was answering upon DozyWannabes remark


and tried to find an explanation for it. It is not relevant for the start of the upset and stall, but it is relevant information, as it is a typical...
Forum: Tech Log
1st Sep 2011, 22:30
Replies: 1,688
Views: 406,926
Posted By RetiredF4

Adverse yaw

It´s a reaction, i´m quite familiar with from big ugly F4, caused by adverse yaw in combination with swept back wings.

Might be the same here. That would also explain the nosedrop in addition...
Forum: Tech Log
31st Aug 2011, 10:44
Replies: 1,688
Views: 406,926
Posted By RetiredF4

VSI

Thank you, that´s what i´m looking for.

If i read it correct, it shows a descent rate of 1.800 fpm (number 18 besides the needle)

Would it look the same and would there be the number 100 for a...
Forum: Tech Log
31st Aug 2011, 10:10
Replies: 1,688
Views: 406,926
Posted By RetiredF4

At least that what it feels like in real life...

At least that what it feels like in real life (with different aircraft though).

In bank we loose lift on both wings, in a stalled environment with disturbed airflows anyway. Same with yaw. The...
Forum: Tech Log
31st Aug 2011, 07:27
Replies: 1,688
Views: 406,926
Posted By RetiredF4

Look at the bank angle. The aircraft was rolling...

Look at the bank angle. The aircraft was rolling and probably yawing and the ailerons had been deflected at the reversals of the roll from PF SS input. It is normal, that overall lift is reduced, and...
Showing results 1 to 35 of 49
 
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