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Search: Posts Made By: tdracer
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Forum: Tech Log
24th May 2020, 23:21
Replies: 7
Views: 223
Posted By tdracer

I know there is a great deal of work going into...

I know there is a great deal of work going into producing viable bio-Jet A - one particularly promising method based on using a feed stock derived from algae.
That being said, the production of bio...
24th May 2020, 22:46
Replies: 469
Views: 603,827
Posted By tdracer

There are numerous design considerations that...

There are numerous design considerations that going into the design and location of the gearbox and other accessories (cross-engine debris, cooling, fire protection being just a few) - and as DR...
24th May 2020, 01:46
Replies: 469
Views: 603,827
Posted By tdracer

OK, fair enough - perhaps I should have said...

OK, fair enough - perhaps I should have said "It's pretty much established from the ATC recordings that a warning was going off during their first, rushed, approach." It still means basically the...
24th May 2020, 00:24
Replies: 469
Views: 603,827
Posted By tdracer

It's pretty much established from the ATC...

It's pretty much established from the ATC recordings that the overspeed warning was going off during their first, rushed, approach.
As I noted in a previous post, humans have an incredible...
22nd May 2020, 22:30
Replies: 469
Views: 603,827
Posted By tdracer

Never underestimate the ability of the human mind...

Never underestimate the ability of the human mind to filter out certain sounds - especially during high stress/high workload situations (perhaps worrying about another, unrelated, issue).
Allegedly...
21st May 2020, 22:22
Replies: 8
Views: 5,184
Posted By tdracer

Possibly the part of the vertical that came...

Possibly the part of the vertical that came off... Hard to imagine that could be the result of a bird strike or similar.

I'm thinking someone forgot to reinstall some fasteners after maintenance.
21st May 2020, 22:19
Replies: 13
Views: 4,210
Posted By tdracer

Now I need to watch that movie tonight :D

Now I need to watch that movie tonight :D
21st May 2020, 20:54
Replies: 118
Views: 45,920
Posted By tdracer

I think this is a big part of the A380 issue -...

I think this is a big part of the A380 issue - the A380 is only able to operate into a relatively small number of airports - far fewer than even the 747. For example, A380's can't operate into the...
20th May 2020, 23:24
Replies: 22
Views: 6,783
Posted By tdracer

At least the Corona related slowdown will allow...

At least the Corona related slowdown will allow Rolls to get caught up on the Trent 1000 issues.
I had beer with a former co-worker back in January - she was involved in the Trent 1000. She told me...
20th May 2020, 00:03
Replies: 80
Views: 35,692
Posted By tdracer

I don't know the origin, but I'm reasonably sure...

I don't know the origin, but I'm reasonably sure that's not it - Boeing calls all the fuselage bits "Section 4x" - e.g. the tail is Section 47/48.
19th May 2020, 19:51
Replies: 80
Views: 35,692
Posted By tdracer

Nope. Large parts of the 777 flight deck were...

Nope. Large parts of the 777 flight deck were transplanted directly into the 767-400. The aisle stand/thrust levers are largely common, displays are largely common, etc.
Which, BTW, was easy to do...
18th May 2020, 23:25
Replies: 80
Views: 35,692
Posted By tdracer

The 767-400 is included in the 757/767 common...

The 767-400 is included in the 757/767 common type rating. Yes, the flight deck is unique to the 767-400 (it's based on a 777 flight deck), but the layout is pretty much common (with bigger...
18th May 2020, 23:15
Replies: 23
Views: 4,285
Posted By tdracer

I recently stumbled on "History Buffs" on...

I recently stumbled on "History Buffs" on youtube:
https://www.youtube.com/results?search_query=history+buffs+

I very seldom sit and watch longer videos on youtube, but I found these enthralling...
18th May 2020, 21:32
Replies: 34
Views: 12,517
Posted By tdracer

The AE2100 was originally developed by Allison...

The AE2100 was originally developed by Allison (before it was taken over by RR) - and has been looked at for other commercial applications as well.
Given that the AE2100 is already 'detuned'...
18th May 2020, 21:22
Replies: 196
Views: 114,393
Posted By tdracer

Just thinking out loud here, but: AP based...

Just thinking out loud here, but:
AP based solid rocket propellant is very stable and stores quite well (in my amateur rocketry activities I've successfully used AP propellant reloads that were 20+...
18th May 2020, 20:54
Replies: 118
Views: 45,920
Posted By tdracer

When I look around, I see far more McDonalds and...

When I look around, I see far more McDonalds and the like than I do 5 star restaurants - by orders of magnitude.
While there is definitely a segment that is not overly price sensitive, the majority...
18th May 2020, 02:33
Replies: 80
Views: 35,692
Posted By tdracer

Are you sure he said "37" (or perhaps was...

Are you sure he said "37" (or perhaps was misquoted)? Delta has taken full advantage of the 757/767 common type rating - regularly swapping pilots between the two.
It's been a several years now, but...
18th May 2020, 01:11
Replies: 196
Views: 114,393
Posted By tdracer

No familiarity with ejection seat boosters, but...

No familiarity with ejection seat boosters, but solid Ammonium Percolate (AP) propellant based rocket motors have a variety of exhaust characteristics - everything from dirty brown/black to white to...
17th May 2020, 22:36
Replies: 118
Views: 45,920
Posted By tdracer

Actually, aside from avionics and some LRUs, the...

Actually, aside from avionics and some LRUs, the expensive bits will be largely exclusive to the A380. I don't know if the wheels/brakes/tires are common with anything else, but they're cheap...
Forum: Jet Blast
17th May 2020, 21:54
Replies: 61
Views: 4,074
Posted By tdracer

Agreed, if it's been sitting for years, it's...

Agreed, if it's been sitting for years, it's nearly 100% probability that the batteries have leaked and destroyed the interior bits.
I had a Maglite that happened to - getting it apart wasn't bad,...
Forum: Tech Log
17th May 2020, 20:10
Replies: 9
Views: 1,295
Posted By tdracer

Short answer is no. First, you don't just hang...

Short answer is no.
First, you don't just hang an engine on wing of a new aircraft and go flying - there is a massive amount of engineering that goes into integrating the engine to the airframe....
Forum: Jet Blast
16th May 2020, 21:24
Replies: 7,889
Views: 3,273,962
Posted By tdracer

Don't you think the higher ups at Mercedes would...

Don't you think the higher ups at Mercedes would like to see a German driver on their team? Especially since, if Seb retires, there won't bay any German drivers on the grid?
Forum: Tech Log
16th May 2020, 20:41
Replies: 26
Views: 1,830
Posted By tdracer

Uplinker, the difference is auto manufactures...

Uplinker, the difference is auto manufactures make them by the millions. Aviation makes them by the thousands - so massive economies of scale come into play. And that automotive engine that started...
16th May 2020, 20:29
Replies: 15
Views: 7,941
Posted By tdracer

You may be right - thinking back that $18 Billion...

You may be right - thinking back that $18 Billion might have been per week, not per month. I tried to find the article to confirm but was unsuccessful :(
16th May 2020, 20:14
Replies: 80
Views: 35,692
Posted By tdracer

It's still far easier said than done - note that...

It's still far easier said than done - note that the 777-300ERSF program is ~30 months from launch to first deliveries. There is a lot of engineering and cert work that goes into turning a passenger...
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