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Search: Posts Made By: Machinbird
Showing results 1 to 35 of 52
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Forum: Tech Log
14th Jun 2011, 02:53
Replies: 2,070
Views: 615,841
Posted By Machinbird

GY, The F-16 deep stall was a result of its...

GY, The F-16 deep stall was a result of its pitching moment characteristics in the stall, nothing more, nothing less. Not necessarily relevant to its unstalled characteristics which happened to be...
Forum: Tech Log
14th Jun 2011, 01:26
Replies: 2,070
Views: 615,841
Posted By Machinbird

Wallybird, you need to do some reading. D.P....

Wallybird, you need to do some reading. D.P. Davies, Handling the Big Jets" is a good starting point.

Just because it isn't a T tail doesn't mean that it can't get in a deep stall. Look at...
Forum: Tech Log
13th Jun 2011, 03:10
Replies: 2,070
Views: 615,841
Posted By Machinbird

Bearfoil Bearfoil, do you ever stop to take...

Bearfoil

Bearfoil, do you ever stop to take a breath? Your logic was flawed and the engineer pointed that out. You should really review your thoughts a bit before posting.
And FYI, AF447 never...
Forum: Tech Log
12th Jun 2011, 21:24
Replies: 2,070
Views: 615,841
Posted By Machinbird

With a full readout of the DFDR AND CVR...

With a full readout of the DFDR AND CVR recorders, I hope BEA is still trying to get info out of the unprotected quick access recorders. It may not be trivial at all, but will probably be well worth...
Forum: Tech Log
12th Jun 2011, 20:50
Replies: 2,070
Views: 615,841
Posted By Machinbird

Post Stall Aerodynamics

When you look at a typical Coefficient of lift curve in a publication, they always stop just past the Clmax point. See example below:...
Forum: Tech Log
12th Jun 2011, 20:31
Replies: 2,070
Views: 615,841
Posted By Machinbird

Svarin, Masked faults in aircraft are nothing...

Svarin,
Masked faults in aircraft are nothing new. We realize you may be on to something, but we all have to realize that BEA is investigating this accident, and if they have integrity, then they...
Forum: Tech Log
12th Jun 2011, 16:55
Replies: 2,070
Views: 615,841
Posted By Machinbird

Why AOA is disabled <60 kts?

A33Zab

That would be an unfortunate tail wagging the dog approach to a minor engineering problem.

With a computerized aircraft you no doubt have maintenance modes you can enter (that are...
Forum: Tech Log
12th Jun 2011, 03:04
Replies: 2,070
Views: 615,841
Posted By Machinbird

AoA sensor experiment

I had a Giannini Controls Corp, vane type AOA sensor in my hands today and took it for a ride in my car. Wind was still, so no wind correction needed. Movement of the vane was slightly damped, but I...
Forum: Tech Log
10th Jun 2011, 02:26
Replies: 2,070
Views: 615,841
Posted By Machinbird

PJ2 PJ2, Thanks for the clarification. :) ...

PJ2
PJ2, Thanks for the clarification. :)

If they had been in Alt1 law, I would expect the aircraft to pretty much hold the attitude that it was in when the Autopilot dropped out. Control feel...
Forum: Tech Log
9th Jun 2011, 23:25
Replies: 2,070
Views: 615,841
Posted By Machinbird

JD-EE I'm not sure Do Nothing was a valid...

JD-EE
I'm not sure Do Nothing was a valid course of action either. As I understand it, there is nothing automatic to keep the machine right side up in roll while in Alt2 Law. The pilot has to fly...
Forum: Tech Log
9th Jun 2011, 02:42
Replies: 2,070
Views: 615,841
Posted By Machinbird

PJ2, Thank you for the interesting article on...

PJ2,
Thank you for the interesting article on C* control.

From the small amount of information that BEA released, it still seems likely to me that difficulty in controlling the lateral channel...
Forum: Tech Log
7th Jun 2011, 14:50
Replies: 2,070
Views: 615,841
Posted By Machinbird

Autotrim

It would seem logical to have a slight time delay in activating autotrim.

When you make a demand on the elevator, that needs to be in the context of the aircraft's current trim.

If the...
Forum: Tech Log
6th Jun 2011, 15:24
Replies: 2,070
Views: 615,841
Posted By Machinbird

Avweb.com A330 Article

Here it is, posted for you to read. Source is Avweb.com. Hope you guys flying the 'bus are on the top of your game.:hmm:
Forum: Tech Log
6th Jun 2011, 05:35
Replies: 2,070
Views: 615,841
Posted By Machinbird

Well, seems to me that when various facts of the...

Well, seems to me that when various facts of the case become public knowledge, it becomes very hard to doctor them to suit an agenda. The more in the public arena in the way of facts, the better. And...
Forum: Tech Log
6th Jun 2011, 04:29
Replies: 2,070
Views: 615,841
Posted By Machinbird

Can you justify this attitude other than you...

Can you justify this attitude other than you wanting the whole report in your lap right now.
Forum: Tech Log
6th Jun 2011, 03:38
Replies: 2,070
Views: 615,841
Posted By Machinbird

Sciolistes For whatever reason the "leak"...

Sciolistes

For whatever reason the "leak" occurred, it helped clarify the direction that the discussion needed to progress. To me, it was a kindness that a busy group of people (BEA) let slip into...
Forum: Tech Log
6th Jun 2011, 00:41
Replies: 2,070
Views: 615,841
Posted By Machinbird

Lets think about it a different way. It has...

Lets think about it a different way. It has leaked that the aircraft never achieved the abnormal attitudel law. For this to happen, It would seem that there was no synchronization of two airspeeds to...
Forum: Tech Log
5th Jun 2011, 17:03
Replies: 2,070
Views: 615,841
Posted By Machinbird

Microburst2002 Captain Rosay is a cagey...

Microburst2002


Captain Rosay is a cagey old test pilot. If he says that, he may have seen indications in some of their test data pointing to that conclusion, but I doubt that AB has strayed...
Forum: Tech Log
4th Jun 2011, 15:49
Replies: 2,070
Views: 615,841
Posted By Machinbird

Mr. Optimistic I saw my wingman push nose...

Mr. Optimistic

I saw my wingman push nose down stick (relative to the aircraft) at very low speed at the top of a loop maneuver (he was chasing the "bad guy" who was trying real hard to get away)....
Forum: Tech Log
3rd Jun 2011, 16:31
Replies: 2,070
Views: 615,841
Posted By Machinbird

Probably obvious to the aviators, but this is...

Probably obvious to the aviators, but this is only 0.4 incremental g above level flight. Add 0.1 g of cobblestone turbulence into the mix, and it is only 0.3 incremental g from the stick to achieve...
Forum: Tech Log
3rd Jun 2011, 05:53
Replies: 2,070
Views: 615,841
Posted By Machinbird

MM43 It might not be quite that bad. Put 13...

MM43
It might not be quite that bad. Put 13 degrees of THS leading edge down on that THS and it doesn't block the rudder quite so badly. Also, even past the stall angle of attack, the inboard...
Forum: Tech Log
3rd Jun 2011, 02:36
Replies: 2,070
Views: 615,841
Posted By Machinbird

Bearfoil Bear, I used to fly a brick-like...

Bearfoil
Bear, I used to fly a brick-like object aboard ship routinely. The secret was maintaining control.:}:}:} Well, that and lots of thrust too.
Forum: Tech Log
3rd Jun 2011, 02:28
Replies: 2,070
Views: 615,841
Posted By Machinbird

Smilin_Ed (Another USN guy) And also the single...

Smilin_Ed (Another USN guy)
And also the single most useful instrument in recovering from a stall. Otherwise, at low speed, how do you know how much to push the nose down? Suppose you are actually...
Forum: Tech Log
2nd Jun 2011, 04:19
Replies: 2,070
Views: 615,841
Posted By Machinbird

Hey Gums, When your Leading Edge Flap (LEF) on...

Hey Gums,
When your Leading Edge Flap (LEF) on your Viper folded up and you were flying with nearly full lateral stick, did that give you control problems other than banging into the control stop on...
Forum: Tech Log
2nd Jun 2011, 02:18
Replies: 2,070
Views: 615,841
Posted By Machinbird

Why all the Nose Up Stick on AF447??A Theory

This is a possible explanation of the AF447 pitch up from FL350 to FL380. This is theory or speculation at this point. I believe the pitch up was inadvertent, was caused by difficulty in managing...
Forum: Tech Log
1st Jun 2011, 13:14
Replies: 2,070
Views: 615,841
Posted By Machinbird

Meikleour Thank goodness. Someone with A330...

Meikleour

Thank goodness. Someone with A330 with Alt 2 law experience.

Meikleour. If you had been handed the aircraft in Alt 2 law, with substantial lateral imbalance (probably due to a rudder...
Forum: Tech Log
1st Jun 2011, 04:05
Replies: 2,070
Views: 615,841
Posted By Machinbird

Takata, Can I have the pillow you sleep on? ...

Takata, Can I have the pillow you sleep on?

From the brief description BEA provided, the guy flying was bombarded by more stimulus in his few minutes holding the stick than most drivers get in an...
Forum: Tech Log
1st Jun 2011, 03:14
Replies: 2,070
Views: 615,841
Posted By Machinbird

Takata Yes, but before that, it takes a...

Takata
Yes, but before that, it takes a recognition of why the WING is heavy.
Forum: Tech Log
1st Jun 2011, 02:11
Replies: 2,070
Views: 615,841
Posted By Machinbird

I'm still hoping some with Airbus A330/340...

I'm still hoping some with Airbus A330/340 experience will be willing to discus their experiences with Alt 2 Law. This version of Alternate law is a 'Roll Direct' mode of operation.
How much...
Forum: Tech Log
30th May 2011, 23:04
Replies: 2,070
Views: 615,841
Posted By Machinbird

In referring to the Speigel article. Hüttig is...

In referring to the Speigel article.
Hüttig is not without bias in that he provides technical assistance to the victim's families and thus probably has economic interests at play.

The...
Forum: Tech Log
30th May 2011, 21:56
Replies: 2,070
Views: 615,841
Posted By Machinbird

Gatbusdriver Gatbusdriver, welcome to the...

Gatbusdriver

Gatbusdriver, welcome to the fray. During your training, have you flown in ALT 2 law, or are you on the little Airbus? We are drafting all able bodied bus drivers to try to answer...
Forum: Tech Log
30th May 2011, 20:45
Replies: 2,070
Views: 615,841
Posted By Machinbird

Circumstantial evidence only at this point. All...

Circumstantial evidence only at this point. All turns were made to the right following the initial problem. We will have to wait for BEA to confirm.


Pointless? Not necessarily. Once we have an...
Forum: Tech Log
30th May 2011, 20:27
Replies: 2,070
Views: 615,841
Posted By Machinbird

Try the mirror image experiment. The idea is...

Try the mirror image experiment.
The idea is that to exert force toward the body's center, you are probably going to use the wrist joint to do this if the thumb is pointed up.
Forum: Tech Log
30th May 2011, 19:48
Replies: 2,070
Views: 615,841
Posted By Machinbird

Dozy I think you are missing a big...

Dozy


I think you are missing a big aspect of the crew's control problem that night.

If the aircraft is right wing heavy, the aircraft will only fly straight with continuing left stick....
Forum: Tech Log
30th May 2011, 19:15
Replies: 2,070
Views: 615,841
Posted By Machinbird

JD-EE JD-EE and others. Most of you may...

JD-EE

JD-EE and others.
Most of you may not recognize what sensor_validation is doing with his analysis, but if anyone is familiar with the communication analysis techniques of Sidney Dekker in...
Showing results 1 to 35 of 52
 
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