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Search: Posts Made By: Machinbird
Showing results 1 to 35 of 1000
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Forum: Military Aviation
21st Mar 2021, 04:44
Replies: 49
Views: 15,654
Posted By Machinbird

My intelligence sources indicate that in addition...

My intelligence sources indicate that in addition to the missile strikes against the extensive US/Turkish/Israeli oil theft operations in Northern Syria, a war is starting to flare up in Eastern...
Forum: Military Aviation
25th Oct 2020, 16:00
Replies: 113
Views: 47,658
Posted By Machinbird

Flying Debris

The aerial view of the crash site shows what appears to be roof damage in all directions (blue tarps) indicating a high energy near vertical impact.

The purpose of discussion of accidents...
Forum: Military Aviation
20th Jul 2020, 05:23
Replies: 251
Views: 102,170
Posted By Machinbird

Wire Fires

Except for the plastic cable ties, this exactly describes what happened aboard USS Saratoga CV-60 during a 1973 overhaul. Trash had accumulated in the operations office below the flight deck. A...
Forum: Rumours & News
3rd Nov 2019, 05:11
Replies: 31
Views: 36,297
Posted By Machinbird

Unfortunately, No Kick in the Pants Available

When the OV-1 came out, they were equipped with the Martin Baker MkJ5B ejection seats, which were a pretty reliable seat to be riding in. Unfortunately, Martin Baker is no longer supplying the life...
Forum: Aviation History and Nostalgia
7th May 2019, 02:04
Replies: 5
Views: 9,071
Posted By Machinbird

Yaw Control Factors

A friend of mine is familiar with the background on this aircraft and who knew the pilot has suggested that the yaw stability of the aircraft was not wonderful and speculated that an event like loss...
Forum: Rumours & News
14th Apr 2019, 16:33
Replies: 5,109
Views: 13,214,849
Posted By Machinbird

Sir. Thinking like that is cruising for a...

Sir. Thinking like that is cruising for a bruising.
With flight control problems, you should typically go for the center of the envelope and avoid the corners of the envelope, then explore...
Forum: Rumours & News
10th Apr 2019, 02:20
Replies: 5,109
Views: 13,214,849
Posted By Machinbird

Loose rivets It is entirely possible to change...

Loose rivets
It is entirely possible to change speed with a properly wound 3 phase motor by electrical means only, without resorting to clutches and alternate gear paths.
When motors are powered by...
Forum: Tech Log
8th Apr 2019, 03:28
Replies: 11
Views: 13,113
Posted By Machinbird

Elevator Feel Shift Module

Here is a schematic of the Elevator Feel Shift Module:

https://cimg3.ibsrv.net/gimg/pprune.org-vbulletin/640x400/elevfeelshiftmodule_9235dd64a0d796536669c870142469407a952ca7.png
ELEVATOR FEEL...
Forum: Rumours & News
23rd Mar 2019, 18:51
Replies: 908
Views: 1,095,523
Posted By Machinbird

On the Indonesian accident traces, there were...

On the Indonesian accident traces, there were some pretty good indications that the nature of the real problem was some sort of sneak circuit in the port side SBYD box in the vicinity of the analog...
Forum: Tech Log
16th Mar 2019, 20:15
Replies: 195
Views: 133,155
Posted By Machinbird

KRUSTY, I see you are living up to your moniker,...

KRUSTY, I see you are living up to your moniker, however the time for legal ass covering is basically past. What is even more important now is brand reputation.
That has to be handled well, or the...
Forum: Rumours & News
16th Mar 2019, 16:24
Replies: 908
Views: 1,095,523
Posted By Machinbird

Sorry, but not correct. MCAS strictly plays with...

Sorry, but not correct. MCAS strictly plays with the pitch sensitivity at high AOA. The way that it does this is the issue. I have no doubt that you could still pull the aircraft into a stall...
Forum: Rumours & News
16th Mar 2019, 05:55
Replies: 908
Views: 1,095,523
Posted By Machinbird

Feel System force levels

Note: On realization of a significant oversight in my thoughts, I have revised my post below.

One of the stabilator equipped jets I used to fly started life with a rather steep stick force...
Forum: Rumours & News
15th Mar 2019, 17:22
Replies: 920
Views: 2,318,542
Posted By Machinbird

So true, but not a problem IF you are below your...

So true, but not a problem IF you are below your cornering velocity. If well in excess, I would think that pulling throttles to idle and putting out speedbrakes would make a substantial improvement...
Forum: Rumours & News
15th Mar 2019, 15:02
Replies: 920
Views: 2,318,542
Posted By Machinbird

Cornering Speed

Written from a fighter pilot viewpoint. When applying to a transport, there are going to be additional factors to consider such as control hinge moments, wing bending moment, and control system...
Forum: Tech Log
14th Mar 2019, 16:05
Replies: 146
Views: 70,498
Posted By Machinbird

No aircraft is perfect. They are a collection of...

No aircraft is perfect. They are a collection of engineering compromises.
Really know your aircraft, including all its warts and kluges!
Beg borrow or steal as much stick time as you can.
Know the...
Forum: Rumours & News
12th Mar 2019, 19:49
Replies: 920
Views: 2,318,542
Posted By Machinbird

Imagine that! The AP has a dive bomb...

Imagine that! The AP has a dive bomb mode.:suspect:
Forum: Rumours & News
10th Mar 2019, 20:28
Replies: 44
Views: 37,586
Posted By Machinbird

SKYHOOK-NOT LIKELY

For the skyhook theory folks, how high does a DC-3 wing sit during a wheel landing? Might that account for the smaller trees mostly remaining to the right on the crash scene photo while immediately...
Forum: Rumours & News
10th Mar 2019, 17:30
Replies: 44
Views: 37,586
Posted By Machinbird

Referencing Airbubba's crash site picture: ...

Referencing Airbubba's crash site picture:
Looks like he landed on the road from right to left and either deliberately or inadvertently ground looped 90 degrees to the right.
The vegetation on the...
Forum: Rumours & News
10th Mar 2019, 05:37
Replies: 920
Views: 2,318,542
Posted By Machinbird

Stabilizer Trim-Possible Failure Mode

About the only way to lose the nut engagement with a ball shaft is to lose the balls out of the nut.
These balls recirculate as the shaft turns, and anything that damages the recirculation pathway...
Forum: Rumours & News
3rd Mar 2019, 19:43
Replies: 920
Views: 2,318,542
Posted By Machinbird

If they show the end of the unit that had the...

If they show the end of the unit that had the pinger attached, you can look to see if the sheared off tips of the bolts are still there.
Considering the relatively high pinger frequency, I doubt...
Forum: Rumours & News
3rd Mar 2019, 18:50
Replies: 920
Views: 2,318,542
Posted By Machinbird

Pinger ?

Fresh from the accident scene, muddy, without a pinger attached.
Somehow, I don't think they were keeping an Allen wrench handy to immediately remove the pinger as soon as the unit was discovered.
Forum: Rumours & News
3rd Mar 2019, 16:30
Replies: 920
Views: 2,318,542
Posted By Machinbird

That is one of the advantages of course. ...

That is one of the advantages of course.
Ultimately, whatever mount used has to allow the pinger/ULD to couple acoustic energy effectively into the water.

I suppose that the CVR/FDR recorder...
Forum: Rumours & News
3rd Mar 2019, 01:24
Replies: 920
Views: 2,318,542
Posted By Machinbird

Thanks Airbubba. That was a useful reference. ...

Thanks Airbubba. That was a useful reference.
Guess I've seen pictures of too many CVRs being recovered from other countrys' waters.:(
Forum: Rumours & News
2nd Mar 2019, 22:17
Replies: 920
Views: 2,318,542
Posted By Machinbird

No evidence of a pinger on this unit. Some...

No evidence of a pinger on this unit. Some significant distortion of the case in places. Likely the pinger was knocked off of it during the accident.

Considering how violent some of these...
Forum: Rumours & News
1st Mar 2019, 05:53
Replies: 920
Views: 2,318,542
Posted By Machinbird

Military Accident-Possibly Similar

There was an accident in 1981 involving a military EC-135 that bears some resemblance to this B763 accident.
EC-135 loss of control (https://aviation-safety.net/database/record.php?id=19810506-0)
Forum: Rumours & News
26th Feb 2019, 16:45
Replies: 920
Views: 2,318,542
Posted By Machinbird

Trim again

Used to be on some aircraft, that the trim could wind nose down until the A/P could not hold it.
Then the crew got handed a nasty surprise.
What kind of warnings and protections does the 76 have...
Forum: Rumours & News
24th Feb 2019, 01:42
Replies: 920
Views: 2,318,542
Posted By Machinbird

Anyone have an idea what was in the cargo? ...

Anyone have an idea what was in the cargo?
Atlas advertises that they can handle outsize cargo. Was it just Amazon cargo or a commercial mix?
Forum: Rumours & News
20th Feb 2019, 04:16
Replies: 474
Views: 1,471,557
Posted By Machinbird

vmandr, Thank you very much for the assistance....

vmandr, Thank you very much for the assistance. :ok:
It appears that MAK went to great lengths to validate the FDR data by running simulations of the flight using the recorded parameters.
As...
Forum: Rumours & News
17th Feb 2019, 20:39
Replies: 474
Views: 1,471,557
Posted By Machinbird

FDR Information

I have been trying to review this accident with regard to the use of pitch trim. Did MAK ever publish the FDR readout? If so, could someone point me to it please?
This accident, Flydubai 981, and...
Forum: Rumours & News
12th Feb 2019, 13:16
Replies: 908
Views: 1,095,523
Posted By Machinbird

Gums, Betcha forgot about your downsprings on...

Gums, Betcha forgot about your downsprings on your VooDoo.:8
Other than the pusher, it had a lot in common with the Phantom in its design concept.

Overall, when I look at the design concept for...
Forum: Accidents and Close Calls
6th Feb 2019, 15:31
Replies: 43
Views: 36,128
Posted By Machinbird

Vne Excedance?

The propeller noises on the two tapes, even after accounting for doppler effects, appear to indicate an RPM higher than red line for that type of engine. Considering that the aircraft was equipped...
Forum: Accidents and Close Calls
5th Feb 2019, 02:51
Replies: 43
Views: 36,128
Posted By Machinbird

Audio Track

Listening to the audio track of the accident, but not knowing whether the bang at the end was the collision with the ground or the inflight breakup, I am reminded of the sound of WW-2 fighters doing...
Forum: Accidents and Close Calls
5th Feb 2019, 00:10
Replies: 43
Views: 36,128
Posted By Machinbird

Looks like the starboard wing with engine...

Looks like the starboard wing with engine attached folded inboard of the engine by pivoting about the upper wing skin causing propeller gashes in the cockpit, and then tore away, taking with it a lot...
Forum: Accidents and Close Calls
4th Feb 2019, 15:47
Replies: 43
Views: 36,128
Posted By Machinbird

Not a good day for aviation.:ouch: Dash cam...

Not a good day for aviation.:ouch:
Dash cam video shows a sudden trail of black smoke and fire curving to the right? and down.
Other videos show an engine lying on a driveway after apparently...
Forum: Rumours & News
27th Jan 2019, 16:55
Replies: 2,099
Views: 1,472,617
Posted By Machinbird

Those stick shakers can be rather noisy.:{ It...

Those stick shakers can be rather noisy.:{ It was likely very hard to communicate in that cockpit as well.
Showing results 1 to 35 of 1000
 
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