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Search: Posts Made By: Stribeck
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Forum: Accidents and Close Calls
9th Jan 2024, 19:53
Replies: 1,950
Views: 927,992
Posted By Stribeck

I was wrong about the locking pin (Vertical...

I was wrong about the locking pin (Vertical Movement Arrestor Bolt) still being in place, after seeing better images I agree that the it appears gone and the Hinge Guide Fitting is stopped by the end...
Forum: Accidents and Close Calls
9th Jan 2024, 17:18
Replies: 1,950
Views: 927,992
Posted By Stribeck

These photos are great and give a very clear...

These photos are great and give a very clear picture of the aft hinge.

IMHO, it is clear that the screws that were supposed to hold the bracket at #2 in the image has come loose, more or less...
Forum: Rumours & News
6th Jan 2020, 10:51
Replies: 288
Views: 357,571
Posted By Stribeck

In the original NY Times article...

In the original NY Times article (nytimes.com/2020/01/05/business/boeing-737-max.html), there is another pretty remarkable statement that Reuters didn't include:

"Boeing also recently told the...
Forum: Rumours & News
26th Dec 2019, 12:00
Replies: 288
Views: 357,571
Posted By Stribeck

Impressive work by the PR department over the...

Impressive work by the PR department over the holidays!

Seems like they came up with a "Method to Continuously Aggravate the Situation", or MCAS:
Shoot yourself in the foot, repeat as necessary...
Forum: Rumours & News
23rd Dec 2019, 04:57
Replies: 288
Views: 357,571
Posted By Stribeck

I fully agree. As I said in a previous post, I...

I fully agree. As I said in a previous post, I would be very interested to see the relation between the engine nacelle drag/lift forces and the CG of the aircraft.

Normally the moment arm from...
Forum: Rumours & News
21st Dec 2019, 19:17
Replies: 288
Views: 357,571
Posted By Stribeck

The fact that engine drag can induce a pitching...

The fact that engine drag can induce a pitching moment is well known. Below is a quote from the book An Introduction to the Longitudinal Static Stability of Low-Speed Aircraft by F.G. Irving, written...
Forum: Rumours & News
19th Dec 2019, 18:56
Replies: 288
Views: 357,571
Posted By Stribeck

Certification approval is a mixture of theory,...

Certification approval is a mixture of theory, design, engineering, documentation, proof of concept, assessment, and testing self-imposed as a result of successful lobbying to the FAA.

Sorry, I...
Forum: Space Flight and Operations
18th Dec 2019, 21:39
Replies: 117
Views: 21,143
Posted By Stribeck

Apparently SpaceX is considering this issue and...

Apparently SpaceX is considering this issue and are investigating less reflective coatings for the starlink satellites. This will not help with the space debris problem of course, but it makes sense...
Forum: Rumours & News
17th Dec 2019, 17:29
Replies: 4,656
Views: 4,783,822
Posted By Stribeck

From fundamental aerodynamics, the answer is...

From fundamental aerodynamics, the answer is definitely yes.

The position of the engines cause increased drag at high AoA, which in turn causes a pitching moment around the CG. The reason for...
Forum: Rumours & News
11th Dec 2019, 19:40
Replies: 4,656
Views: 4,783,822
Posted By Stribeck

Reading those announcements (1700 or 1850 hours)...

Reading those announcements (1700 or 1850 hours) carefully shows it doesn't mean anything:

So in November Boeing stated ”900+ test and production flights with new software totaling 1700+ hours".
...
Forum: Rumours & News
22nd Oct 2019, 16:46
Replies: 4,656
Views: 4,783,822
Posted By Stribeck

Regarding the SeattleTimes article of today: ...

Regarding the SeattleTimes article of today:

No matter how these messages are interpreted, they clearly show that the Chief Technical Pilot (and "Vince") considered the possibility that MCAS was...
Showing results 1 to 11 of 11


 
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