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 4
1
2
3
4
Search: Posts Made By: fizz57
Showing results 1 to 35 of 116
Search took 0.01 seconds.
Forum: Accidents and Close Calls
16th Mar 2024, 15:54
Replies: 1,950
Views: 927,822
Posted By fizz57

That's closing the stable door after the horse...

That's closing the stable door after the horse has bolted. This particular problem probably has a very specific cause, has never happened before (else we'd have heard of it) and is unlikely to...
Forum: Military Aviation
22nd Jun 2020, 15:20
Replies: 481
Views: 227,477
Posted By fizz57

Concorde - or a 15-inch gun battleship - gives...

Concorde - or a 15-inch gun battleship - gives you something to respect when you see the red, white and blue. But a glorified airliner with a tail-boom? Signs of the times, I suppose.
Forum: Rumours & News
22nd Jun 2020, 15:12
Replies: 1,784
Views: 3,065,082
Posted By fizz57

Probably; they show the plane in a landed...

Probably; they show the plane in a landed attitude with the fan cowl apparently scraping the runway, whereas pics of the accident flight after the botched landing clearly show the fan cowls intact...
Forum: Rumours & News
28th May 2020, 16:40
Replies: 1,128
Views: 474,708
Posted By fizz57

Boeing (admittedly under a different CEO) did...

Boeing (admittedly under a different CEO) did that quite a few times last year. Share price needs propping up again? :rolleyes:
Forum: Rumours & News
10th Mar 2020, 20:57
Replies: 378
Views: 193,530
Posted By fizz57

Using a complex, failure-prone system to cure a...

Using a complex, failure-prone system to cure a simply-fixed and rare problem is generally not a good idea - ask Boeing.


Quite apart from the fact that "an accelerometer in the stick" and its...
Forum: Rumours & News
9th Mar 2020, 07:19
Replies: 378
Views: 193,530
Posted By fizz57

Wrong again :) On the A320-330-340 they are full...

Wrong again :) On the A320-330-340 they are full wheels that are mechanically connected to the trim actuator and turn when the stab moves.
They are in fact a final backup for longitudinal control...
Forum: Rumours & News
7th Feb 2020, 12:50
Replies: 22
Views: 7,547
Posted By fizz57

The reliability is there, if manufacturers (and...

The reliability is there, if manufacturers (and customers) will pay for it. That's not the problem.

Don't take today's aircraft as a guide, they're designed knowing that there's a crew to take...
Forum: Rumours & News
1st Feb 2020, 08:28
Replies: 76
Views: 41,160
Posted By fizz57

Not really - just watching with rapt fascination...

Not really - just watching with rapt fascination as Boeing racks up nearly a year's worth of unsold aircraft without being visibly nearer a complete solution. Reminds me of the time I witnessed an...
Forum: Rumours & News
25th Jan 2020, 14:17
Replies: 23
Views: 17,921
Posted By fizz57

There'll be a Captain on board if only to sign...

There'll be a Captain on board if only to sign the paperwork and do you think the SLF (who don't know the difference between an NG and a MAX, remember) will complain even if his only other job is to...
Forum: Tech Log
17th Jan 2020, 08:35
Replies: 20
Views: 7,812
Posted By fizz57

I am fascinated by the prevalence of the...

I am fascinated by the prevalence of the Bernoulli "explanation" and the fervour it arouses among the uninitiated, when as G&D has stated they are equivalent descriptions of the same phenomenon: one...
Forum: Rumours & News
11th Jan 2020, 17:59
Replies: 378
Views: 193,530
Posted By fizz57

I found the next bit particularly interesting. ...

I found the next bit particularly interesting. They discuss the need for training for this situation, but don't want to spoil the commonality with the NG. Someone suggests incorporating the...
Forum: Rumours & News
10th Jan 2020, 08:48
Replies: 35
Views: 25,366
Posted By fizz57

Sounds reasonable, thanks. I wasn't thinking of...

Sounds reasonable, thanks. I wasn't thinking of the bug being in the DEU's.
Forum: Rumours & News
9th Jan 2020, 21:47
Replies: 35
Views: 25,366
Posted By fizz57

I have problems understanding how a fault in the...

I have problems understanding how a fault in the nav data or its processing can cause displays to blank. I always understood from the various schematics that the Flight Management Computers, Flight...
Forum: Rumours & News
8th Jan 2020, 18:29
Replies: 685
Views: 1,733,474
Posted By fizz57

A few months ago we'd have said the same about...

A few months ago we'd have said the same about airplanes pointing themselves at the ground :uhoh:

I'd agree that the balance of probabilities points towards an explosive at this point, but...
Forum: Rumours & News
22nd Dec 2019, 06:33
Replies: 288
Views: 357,552
Posted By fizz57

The non-linearity issue was brought up by FCEng84...

The non-linearity issue was brought up by FCEng84 way back when the whole thing started in one of the now-closed threads. It is the stick force reversal and instability that are speculations, and...
Forum: Rumours & News
21st Dec 2019, 18:32
Replies: 288
Views: 357,552
Posted By fizz57

Just to clear up another of your misconceptions...

Just to clear up another of your misconceptions (I see that the first has already been addressed), no-one is suggesting that the trim forces are too low and too high under the same flight conditions.
Forum: Rumours & News
19th Dec 2019, 07:11
Replies: 113
Views: 126,472
Posted By fizz57

An X-15 was lost when the attitude target...

An X-15 was lost when the attitude target indicator on the artificial horizon was left in yaw mode for ascent rather than in sideslip mode for re-entry (or was that the other way round?) due to high...
Forum: Rumours & News
16th Dec 2019, 19:30
Replies: 4,656
Views: 4,783,622
Posted By fizz57

There was a Comet crash on take-off in Turkey...

There was a Comet crash on take-off in Turkey around 1960 because a screw worked loose in the artificial horizon and stopped the pitch pointer going past a certain point. It was night and the pilot...
Forum: Rumours & News
13th Nov 2019, 16:47
Replies: 4,656
Views: 4,783,622
Posted By fizz57

Makes one wonder just how deep Boeing's pockets...

Makes one wonder just how deep Boeing's pockets are - and whether any other company without lucrative military sales could do anything like that.
Forum: Rumours & News
5th Nov 2019, 06:34
Replies: 4,656
Views: 4,783,622
Posted By fizz57

I must say that's an excellent screen name for a...

I must say that's an excellent screen name for a Boeing apologist. The original Icarus pitched up too far then his wings came off...
Forum: Rumours & News
25th Oct 2019, 09:34
Replies: 4,656
Views: 4,783,622
Posted By fizz57

So we've come full circle, from "if the plane is...

So we've come full circle, from "if the plane is playing up fly it manually" to "if the plane is playing up engage the autopilot"



Did the Lion Air crew know this? Specifically, did Boeing tell...
Forum: Rumours & News
19th Oct 2019, 08:52
Replies: 4,656
Views: 4,783,622
Posted By fizz57

Don't blame EASA and the other certification...

Don't blame EASA and the other certification authorities too much. There was a system which worked ... till now. Boeing and the FAA have killed the goose that lays golden eggs, it's going to be a...
Forum: Rumours & News
14th Oct 2019, 21:07
Replies: 60
Views: 50,394
Posted By fizz57

You're right based on what we know but the JATR...

You're right based on what we know but the JATR report has cast doubt on the unaugmented characteristics of the MAX and I suspect that they know more than they're letting on.
Forum: Rumours & News
4th Jul 2019, 17:14
Replies: 4,656
Views: 4,783,622
Posted By fizz57

Interesting. Can you give an example of this?

Interesting. Can you give an example of this?
Forum: Rumours & News
30th Jun 2019, 06:54
Replies: 4,656
Views: 4,783,622
Posted By fizz57

Thanks for your - voluminous - post, which...

Thanks for your - voluminous - post, which however really adds nothing new. We know the pilots screwed up, pilots tend to at times. Whether Boeing or the airlines were responsible for the 300-odd...
Forum: Rumours & News
27th Jun 2019, 11:52
Replies: 4,656
Views: 4,783,622
Posted By fizz57

One wonders what the FDR would record while the...

One wonders what the FDR would record while the pilots were mashing the thumb switches but only getting a "slow response". Short pulses, perhaps?
(I know, pure speculation on my part :rolleyes: )
Forum: Rumours & News
23rd Jun 2019, 19:41
Replies: 4,656
Views: 4,783,622
Posted By fizz57

It's not as simple as that. The classical...

It's not as simple as that. The classical stability analysis you quote assumes that the control surfaces are fixed. Having movable surfaces complicates matters, for example as discussed here...
Forum: Rumours & News
23rd Jun 2019, 06:36
Replies: 4,656
Views: 4,783,622
Posted By fizz57

" Then they agreed not to inform pilots about...

" Then they agreed not to inform pilots about MCAS in manuals, even though Boeing’s safety analysis expected pilots to be the primary backstop in the event the system went haywire."

Pathetic.
Forum: Rumours & News
3rd Jun 2019, 07:17
Replies: 44
Views: 39,681
Posted By fizz57

The article dated yesterday said that the FAA...

The article dated yesterday said that the FAA "will release" an AD. So give them a chance before crying out fake news (though you're in good company with this).

More concerning perhaps is that...
Forum: Rumours & News
22nd May 2019, 20:27
Replies: 104
Views: 109,680
Posted By fizz57

Rather poor choice of example seeing that MCAS is...

Rather poor choice of example seeing that MCAS is not active during automatic flight. In fact the sole reason for MCAS is to provide pilot-friendly handling characteristics, and would not have been...
Forum: Tech Log
9th May 2019, 18:17
Replies: 52
Views: 20,994
Posted By fizz57

Omega was indeed used by US Navy submarines, as...

Omega was indeed used by US Navy submarines, as this (https://apps.dtic.mil/dtic/tr/fulltext/u2/a285948.pdf)(caution: large document) makes clear. There was no need for the submarine to rise to 20m,...
Forum: Rumours & News
25th Apr 2019, 06:52
Replies: 908
Views: 1,093,538
Posted By fizz57

I don't believe ias disagree is an optional extra...

I don't believe ias disagree is an optional extra on the ng. And there are a couple of bodies in row zero trained to take care of that.
Forum: Rumours & News
23rd Apr 2019, 14:04
Replies: 5,109
Views: 13,099,189
Posted By fizz57

At least three if these columns are anything to...

At least three if these columns are anything to go by ;)
Forum: Rumours & News
23rd Apr 2019, 06:33
Replies: 908
Views: 1,093,538
Posted By fizz57

I don't believe you'll find any. Firstly because...

I don't believe you'll find any. Firstly because sts trim inputs are relatively small and secondly because the primary driver for sts - airspeed - is cross-compared between the two sides.

Sort of...
Forum: Rumours & News
10th Apr 2019, 17:14
Replies: 908
Views: 1,093,538
Posted By fizz57

Beg to differ. On the 737, before the advent of...

Beg to differ. On the 737, before the advent of MCAS, the AOA signal was a low risk one. All the other systems you mention, with the exception of the stick-shaker, are cross-monitored and have...
Showing results 1 to 35 of 116
 
Page 1 of 4
1
2
3
4


 
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.