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19th Feb 2019, 07:59
Replies: 39
Views: 10,376
Posted By tdracer

I can't imagine when that satellite photo might...

I can't imagine when that satellite photo might have been taken (assuming it hasn't been altered) - I live just a few miles from the Boeing flight line on Paine Field and there has never been a time...
19th Feb 2019, 04:27
Replies: 39
Views: 10,376
Posted By tdracer

No, they weren't. The 'cement block engines' are...

No, they weren't. The 'cement block engines' are specific to the installation, and while less common, they've appeared from time to time on all the various Everett products. Sometimes due to engine...
Forum: Jet Blast
18th Feb 2019, 02:32
Replies: 7,249
Views: 2,434,806
Posted By tdracer

I was watching the new season of "Grand Tour" on...

I was watching the new season of "Grand Tour" on Amazon Prime the other night - in episode 5 Hammond does a very nice tribute to the late, great Jim Clark.
Well worth the watch if you have the...
18th Feb 2019, 01:48
Replies: 236
Views: 171,021
Posted By tdracer

Actually, size wise, the 747 didn't 'grow'...

Actually, size wise, the 747 didn't 'grow' meaningfully from the -100 through the -400 (the stretched upper deck on the -300/400 added some seat area (and the -400 winglets increased the wingspan a...
18th Feb 2019, 01:28
Replies: 236
Views: 171,021
Posted By tdracer

Which is another of the A380's problems - it only...

Which is another of the A380's problems - it only serves a small number of airports. If you're not flying from and to one of those few airports, flying an A380 automatically means a transfer...
17th Feb 2019, 09:53
Replies: 27
Views: 9,229
Posted By tdracer

Boeing made a serious proposal for what became...

Boeing made a serious proposal for what became the C5A, but it lost out to the Lockheed proposal. I don't know specifics (this was all before my time, although I knew many people who were involved),...
Forum: Tech Log
16th Feb 2019, 22:00
Replies: 8
Views: 1,371
Posted By tdracer

I agree for the 737 MAX - aside from the engines...

I agree for the 737 MAX - aside from the engines not a lot changed on the MAX relative to the NG. However the 777X barely qualifies as a derivative and more of an all new aircraft - new engines, new...
Forum: Middle East
16th Feb 2019, 21:29
Replies: 26
Views: 10,527
Posted By tdracer

Although the Engine Alliance is technically a...

Although the Engine Alliance is technically a joint venture between Pratt and GE, my friends at both Pratt and GE tell me that Pratt was very much a 'junior partner' - GE ran things. And of the 'big...
16th Feb 2019, 20:18
Replies: 236
Views: 171,021
Posted By tdracer

When the A380 was launched, there were two US...

When the A380 was launched, there were two US operators of the 747 in passenger guise - Northwest and United (Northwest was the 747-400 launch customer). However neither had taken a new one for...
15th Feb 2019, 23:42
Replies: 27
Views: 9,229
Posted By tdracer

Actually that's a myth - there was minimal...

Actually that's a myth - there was minimal commonality between the 747 and the Boeing USAF large freighter (e.g. C5) proposal. Rather, the 747 was largely the result of a request by Pan Am's Juan...
15th Feb 2019, 22:43
Replies: 236
Views: 171,021
Posted By tdracer

Appears the final built total for the A380 will...

Appears the final built total for the A380 will be a bit over 250 units - word is they will build 17 more for Emirates before they shut it down (given the lead times for some components, I suspect...
Forum: Tech Log
15th Feb 2019, 02:42
Replies: 10
Views: 884
Posted By tdracer

But, you just associated that loss of N1...

But, you just associated that loss of N1 indication with an engine failure. Since I don't think any engine control requires a valid N1 indication to keep the engine running, you're talking two...
Forum: Tech Log
15th Feb 2019, 02:00
Replies: 10
Views: 884
Posted By tdracer

If you see "zero" rotor speed for any shaft -...

If you see "zero" rotor speed for any shaft - that suggests an engine seizure - at any flyable airspeed there should be a finite and measurable windmill rotor speed. Short of an all engine out...
15th Feb 2019, 01:47
Replies: 236
Views: 171,021
Posted By tdracer

The 747 has been a reasonably profitable product...

The 747 has been a reasonably profitable product for Boeing - particularly the 747-400 with nearly half of the over 1500 747's built being -400s. However it was never the huge cash cow that Airbus...
Forum: Middle East
15th Feb 2019, 00:18
Replies: 26
Views: 10,527
Posted By tdracer

I suspect you're correct about being able to pick...

I suspect you're correct about being able to pick up the A330 NEOs much sooner - the 787, 777X, and A350 order books are pretty much full for the next five years. The A330 is really the only...
13th Feb 2019, 21:06
Replies: 70
Views: 23,619
Posted By tdracer

That indeed is Moses Lake (I recognize many of...

That indeed is Moses Lake (I recognize many of the landmarks - it's a favorite for Boeing flight testing - it's nearby but gets them out of the relatively congested airspace around Puget Sound).
I...
13th Feb 2019, 19:10
Replies: 236
Views: 171,021
Posted By tdracer

More here: Airbus Should Accept Reality And End...

More here:
Airbus Should Accept Reality And End The A380 Program | Commercial Aviation content from Aviation Week...
Forum: Tech Log
13th Feb 2019, 08:24
Replies: 19
Views: 1,623
Posted By tdracer

Just curious - what are the...

Just curious - what are the advantages/disadvantages of a fiber optic gyro as compared to a ring laser gyro? The RLG have an impressively good history of both reliability and accuracy - so what's...
13th Feb 2019, 08:16
Replies: 70
Views: 23,619
Posted By tdracer

A little thread drift here, but any lightly...

A little thread drift here, but any lightly loaded twin doing a max rated TO is going to be spectacular. I did a bunch of engine change certification flight tests on the 767. Usually really light...
13th Feb 2019, 04:00
Replies: 70
Views: 23,619
Posted By tdracer

The 747-8F appears to still have a future - all...

The 747-8F appears to still have a future - all those 747-400F and BCFs are not going to last forever, and if you want to carry more than ~100 tons, the 747 Freighter is the only game in town.
An...
Forum: Jet Blast
12th Feb 2019, 00:30
Replies: 7,249
Views: 2,434,806
Posted By tdracer

Remember, Toro Rosso is the Red Bull junior team,...

Remember, Toro Rosso is the Red Bull junior team, so Red Bull had inside information and was very familiar with the status of the Honda engine last year and where it was headed for 2019. I wouldn't...
11th Feb 2019, 23:55
Replies: 70
Views: 23,619
Posted By tdracer

When they incorporated the stretched upper deck...

When they incorporated the stretched upper deck for the 747-300 (and later the -400), the longer upper deck improved the area ruling enough that it compensated for the increased weight of the upper...
Forum: Tech Log
11th Feb 2019, 23:47
Replies: 16
Views: 2,404
Posted By tdracer

Yea, I stand corrected. My memory was faulty......

Yea, I stand corrected. My memory was faulty... (I didn't work the 787, I was busy with the 747-8).
Forum: Tech Log
11th Feb 2019, 23:44
Replies: 8
Views: 1,371
Posted By tdracer

The original drive for going 'bleedless' on the...

The original drive for going 'bleedless' on the 787 was for fuel efficiency - some people at Boeing became convinced that if you got rid of service bleed, the engine design could be optimized much...
11th Feb 2019, 22:16
Replies: 89
Views: 41,592
Posted By tdracer

You all appear to missing a very critical portion...

You all appear to missing a very critical portion of the article:

In other words, the FAA/EASA can't agree on what they want.
It's unfortunate and ironic that the more safety critical the change,...
Showing results 1 to 25 of 1000
 


 
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