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Search: Posts Made By: GordonR_Cape
Showing results 1 to 35 of 423
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Forum: Rumours & News
17th Feb 2020, 05:50
Replies: 378
Views: 193,810
Posted By GordonR_Cape

WOW, WOW, WOW! This article says things out...

WOW, WOW, WOW!

This article says things out loud which many of us suspected a year ago, and explains them in a way which is much clearer than some of the mainstream coverage. It also addresses...
Forum: Spectators Balcony (Spotters Corner)
9th Feb 2020, 12:09
Replies: 83
Views: 74,002
Posted By GordonR_Cape

The weather might have something to do with it:...

The weather might have something to do with it: https://www.bbc.com/news/uk-51425482
Forum: Rumours & News
3rd Feb 2020, 12:14
Replies: 685
Views: 1,734,091
Posted By GordonR_Cape

The BBC reports that the Ukrainian leak of the...

The BBC reports that the Ukrainian leak of the ATC tape is further straining the investigation: https://www.bbc.com/news/world-middle-east-51356626
Forum: African Aviation
23rd Jan 2020, 14:14
Replies: 2
Views: 2,603
Posted By GordonR_Cape

We don't know the cause yet, but the area has...

We don't know the cause yet, but the area has mountains very close to the north side of the airport (open ocean to the south), and persistent clouds at this time of year. I assume that it had...
Forum: African Aviation
23rd Jan 2020, 12:43
Replies: 2
Views: 2,603
Posted By GordonR_Cape

SA CAA calibration aircraft crash near George

https://www.news24.com/SouthAfrica/News/fears-for-three-crew-members-as-plane-goes-missing-near-george-20200123


...
Forum: Accidents and Close Calls
28th Dec 2019, 18:17
Replies: 10
Views: 9,743
Posted By GordonR_Cape

Significant impact, apparently near the post...

Significant impact, apparently near the post office: https://www.bbc.com/news/world-us-canada-50935208
Forum: Rumours & News
16th Dec 2019, 10:20
Replies: 4,656
Views: 4,786,566
Posted By GordonR_Cape

Short answer: The autopilot and MCAS are...

Short answer: The autopilot and MCAS are different sub-systems running on each FCC.

The autopilot is a 3-axis system, and demands high integrity data from muliple sensors to operate safely.
...
Forum: Rotorheads
16th Dec 2019, 07:58
Replies: 78
Views: 57,832
Posted By GordonR_Cape

Thanks Kiwithrottlejockey its a bit bigger than I...

Thanks Kiwithrottlejockey its a bit bigger than I thought.

The only missing bit is the scale: Heights in meters, and grid scale in kilometers.
Forum: Rumours & News
15th Dec 2019, 05:54
Replies: 4,656
Views: 4,786,566
Posted By GordonR_Cape

The recent comments about MCAS reinforce the...

The recent comments about MCAS reinforce the point that it is very difficult to design a complex system that is safe, effective and reliable, and operates within the limitations of the human-machine...
Forum: Rumours & News
14th Dec 2019, 08:50
Replies: 64
Views: 47,912
Posted By GordonR_Cape

Short answer: The fibers in carbon composite are...

Short answer: The fibers in carbon composite are not continuous, but embedded in a non-conducting polymer matrix.
Forum: Rotorheads
12th Dec 2019, 12:44
Replies: 78
Views: 57,832
Posted By GordonR_Cape

Correct in all details, except for molten lava,...

Correct in all details, except for molten lava, which forms an entirely different type of volcano. Incandescent rocks are possible, but its mostly superheated steam. See:...
Forum: Tech Log
9th Dec 2019, 05:00
Replies: 363
Views: 560,241
Posted By GordonR_Cape

Thanks for the link! The mythical man-hour: The...

Thanks for the link! The mythical man-hour: The length of the job may depend on the size of the team, and how many technicians can squeeze into a confined wheel bay, or remove skin rivets on the...
Forum: African Aviation
4th Dec 2019, 20:40
Replies: 30
Views: 20,191
Posted By GordonR_Cape

Long-delayed developments starting to unfold....

Long-delayed developments starting to unfold. Links in the News forum: https://www.pprune.org/rumours-news/627643-south-african-airways-going-under.html
Forum: African Aviation
4th Dec 2019, 20:38
Replies: 24
Views: 10,517
Posted By GordonR_Cape

Long-delayed developments starting to unfold:...

Long-delayed developments starting to unfold: https://www.fin24.com/Companies/Industrial/breaking-saa-must-go-into-business-rescue-ramaphosa-orders-20191204
Forum: Rumours & News
30th Nov 2019, 19:08
Replies: 1
Views: 5,805
Posted By GordonR_Cape

This saga has been going on for so many years,...

This saga has been going on for so many years, that it is hard to believe than anything will happen over the weekend.

There is already a current thread in the African aviation forum:...
Forum: African Aviation
29th Nov 2019, 22:51
Replies: 24
Views: 10,517
Posted By GordonR_Cape

Leading travel agents and insurers no longer...

Leading travel agents and insurers no longer prepared to underwrite tickets on SAA, due to the risk of insolvency:...
Forum: Rumours & News
26th Nov 2019, 23:19
Replies: 4,656
Views: 4,786,566
Posted By GordonR_Cape

I agree to some extent, I noted dozens of...

I agree to some extent, I noted dozens of nit-picks in the article. Many new facts have emerged since Apr 2019, but fundamental issues remain unanswered. Neither Boeing nor the FAA have clarified...
Forum: Rumours & News
26th Nov 2019, 22:15
Replies: 4,656
Views: 4,786,566
Posted By GordonR_Cape

Thanks for the link, which I had not seen before....

Thanks for the link, which I had not seen before. It included a description of an issue that I raised recently (which elicited some skepticism):


My bold added.

Edit: I understand that it is...
Forum: Rumours & News
25th Nov 2019, 04:20
Replies: 4,656
Views: 4,786,566
Posted By GordonR_Cape

Under MCAS 1.0 the linearity would be preserved,...

Under MCAS 1.0 the linearity would be preserved, because the system could fire a second time if the pilot continued to pull up. With MCAS 2.0 this repeated triggering can no longer happen during a...
Forum: Rumours & News
24th Nov 2019, 17:00
Replies: 4,656
Views: 4,786,566
Posted By GordonR_Cape

That is also an excellent link on FBW pitch...

That is also an excellent link on FBW pitch augmentation, relevant to the above discussion, and the opposite of what MCAS does.
Forum: Rumours & News
24th Nov 2019, 16:54
Replies: 4,656
Views: 4,786,566
Posted By GordonR_Cape

I think fdr nailed it earlier with this chart of...

I think fdr nailed it earlier with this chart of the unsatisfactory control forces (trim-speed as a proxy for AOA).
...
Forum: Rumours & News
24th Nov 2019, 16:10
Replies: 4,656
Views: 4,786,566
Posted By GordonR_Cape

Allowing MCAS to move the horizontal stabiliser...

Allowing MCAS to move the horizontal stabiliser into a nose down position does not solve the non-linear elevator feel curve. It simply forces the aircraft away from that part of the flight envelope....
Forum: Rumours & News
24th Nov 2019, 15:21
Replies: 4,656
Views: 4,786,566
Posted By GordonR_Cape

AFAIK the B737 elevator feel computer is a...

AFAIK the B737 elevator feel computer is a hydraulic mechanism, not an electronic system. Reverse engineering it would create many more certification obstacles than it would solve. It would also be...
Forum: Rumours & News
24th Nov 2019, 00:04
Replies: 5
Views: 4,388
Posted By GordonR_Cape

Another Air Tanzania aircraft was previously...

Another Air Tanzania aircraft was previously seized in South Africa (for a while), in a related lawsuit. Discussion in this thread:...
Forum: Military Aviation
22nd Nov 2019, 10:40
Replies: 70
Views: 34,140
Posted By GordonR_Cape

https://www.bbc.com/news/world-europe-50514306

https://www.bbc.com/news/world-europe-50514306
Forum: Rumours & News
17th Nov 2019, 19:50
Replies: 4
Views: 6,216
Posted By GordonR_Cape

Looks like a really, really, minor collision:...

Looks like a really, really, minor collision: https://www.namibian.com.na/85576/read/Minor-runway-accident-delays-Frankfurt-flight
...
Forum: PPRuNe Problems or Queries
14th Nov 2019, 22:11
Replies: 8
Views: 1,117
Posted By GordonR_Cape

The link I'm seeing reads: "40 Years After Karen...

The link I'm seeing reads: "40 Years After Karen Klaas Was Strangled With Pantyhose, DNA Evidence..."

Disgusting....
Forum: Rumours & News
11th Nov 2019, 06:08
Replies: 211
Views: 155,136
Posted By GordonR_Cape

Limiting the speed of ships also seems to be...

Limiting the speed of ships also seems to be fashionable topic to reduce fuel consumption: https://www.bbc.com/news/science-environment-50348321
Forum: Rumours & News
10th Nov 2019, 06:24
Replies: 4,656
Views: 4,786,566
Posted By GordonR_Cape

I did hint a few months ago that Dominic Gates...

I did hint a few months ago that Dominic Gates should be nominated for a Pulitzer Prize. His work is certainly merit-worthy, and the clarity of the writing is excellent. It may not be under the same...
Forum: Rumours & News
10th Nov 2019, 05:55
Replies: 19
Views: 17,903
Posted By GordonR_Cape

A more detailed explanation, with visuals from a...

A more detailed explanation, with visuals from a related engine (GE CF6), has been posted by an actual jet mechanic:

https://youtu.be/0GxvEQZil2U
Forum: Rumours & News
9th Nov 2019, 06:40
Replies: 4,656
Views: 4,786,566
Posted By GordonR_Cape

The Boeing 737 Classic (-300 onwards) was...

The Boeing 737 Classic (-300 onwards) was introduced in 1984. That is the benchmark for the FCCs, not the -200 model.
Forum: Rumours & News
8th Nov 2019, 20:14
Replies: 3
Views: 4,195
Posted By GordonR_Cape

Not that exact link, but an equivalent version in...

Not that exact link, but an equivalent version in the Seattle Times: https://www.seattletimes.com/business/boeing-aerospace/new-questions-raised-on-safety-of-both-737-max-and-787-dreamliner/
Forum: Rumours & News
8th Nov 2019, 17:36
Replies: 3
Views: 4,195
Posted By GordonR_Cape

Link already posted and discussed in the B737 MAX...

Link already posted and discussed in the B737 MAX thread.
Forum: Rumours & News
8th Nov 2019, 17:34
Replies: 4,656
Views: 4,786,566
Posted By GordonR_Cape

We knew about the change to MCAS to use both AOA...

We knew about the change to MCAS to use both AOA sensors, but that was only the tip of the iceberg.

More thorough simulator testing uncovered the potential for runaway trim on the MAX, caused by...
Forum: Rumours & News
8th Nov 2019, 13:21
Replies: 4,656
Views: 4,786,566
Posted By GordonR_Cape

"Good, cheap, fast. Pick any two." This one is...

"Good, cheap, fast. Pick any two." This one is attributed to Red Adair, the famous oil and gas fire suppressing expert.

P.S. I tried to click on the 'like' button, but had to leave a comment...
Showing results 1 to 35 of 423
 
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