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Search: Posts Made By: tdracer
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Forum: Jet Blast
22nd Sep 2021, 23:12
Replies: 89
Views: 5,670
Posted By tdracer

Heat pumps work well for heat when the...

Heat pumps work well for heat when the temperature isn't too cold, with the added advantage that they can turn into air conditioners in the summer when it gets hot. The problems start when it gets...
22nd Sep 2021, 18:04
Replies: 23
Views: 7,431
Posted By tdracer

Flew round trip last week from Seattle to...

Flew round trip last week from Seattle to Washington Dulles. Both airports were busy - especially Dulles (although many of the airport shops and restaurants were still closed). SEA to IAD on Sunday...
Forum: Jet Blast
22nd Sep 2021, 17:43
Replies: 68
Views: 3,698
Posted By tdracer

The problem with water cooled reactors is that...

The problem with water cooled reactors is that the water isn't just the coolant, it's a moderator to the nuclear reaction. So, if you lose the cooling water, not only do you lose cooling, the...
22nd Sep 2021, 02:56
Replies: 48
Views: 16,128
Posted By tdracer

I must say, those uniforms are consistent with...

I must say, those uniforms are consistent with most of what's come from our military leaders this year...
22nd Sep 2021, 02:51
Replies: 8
Views: 1,994
Posted By tdracer

Do you remember 1979? I bought my first house in...

Do you remember 1979? I bought my first house in 1979 - the mortgage was 11% :eek:. It went up from there, peaking around 15% five years later. The fuel savings wouldn't have even paid the interest...
22nd Sep 2021, 02:15
Replies: 8
Views: 1,994
Posted By tdracer

Given the KC-135 and 767 are similar sized/weight...

Given the KC-135 and 767 are similar sized/weight aircraft, the retrofit costs should be similar as well, so lets look at adding winglets to a 767.
Round numbers, adding winglets to a 767 is around...
20th Sep 2021, 23:14
Replies: 56
Views: 22,209
Posted By tdracer

It all traces back to one bad call - the failure...

It all traces back to one bad call - the failure of MCAS was deemed to be no worse than "Major" - basically that if the stab trim started doing something unexpected or that the crew didn't...
Forum: Jet Blast
20th Sep 2021, 18:39
Replies: 68
Views: 3,698
Posted By tdracer

Tally with this? [/QUOTE] It's because of...

Tally with this?
[/QUOTE]

It's because of how some of their contracts are set up. Large, industrial users often sign long term contracts that gives them a somewhat discounted rate. Problem is if...
Forum: Jet Blast
19th Sep 2021, 21:06
Replies: 68
Views: 3,698
Posted By tdracer

Tidal is one of those things that's great in...

Tidal is one of those things that's great in concept and theory, but a nightmare to implement. Much of the beauty of wind, solar, hydro and geothermal is that - once installed - the continuing costs...
Forum: Jet Blast
18th Sep 2021, 20:25
Replies: 40
Views: 2,042
Posted By tdracer

The US hasn't been shipping much plastic to Asia...

The US hasn't been shipping much plastic to Asia for several years since as noted they pretty much stopped accepting it. So aside from the readily recyclable stuff (mainly plastic bottles) most of it...
18th Sep 2021, 20:14
Replies: 10
Views: 1,522
Posted By tdracer

What year was that? I'd think that would have...

What year was that? I'd think that would have had to been a 747-400 since the I doubt the avionics on the early 747 models were that much different than the Concorde.
Forum: Tech Log
18th Sep 2021, 20:05
Replies: 12
Views: 1,451
Posted By tdracer

The new generation of turbofans have big,...

The new generation of turbofans have big, relatively slow turning fans and small, fast spinning cores. There are a performance and efficiency advantages of spinning a turbine engine faster (hence the...
18th Sep 2021, 18:36
Replies: 56
Views: 22,209
Posted By tdracer

As spronrad notes, the problem was that at that...

As spronrad notes, the problem was that at that time Boeing was severely resource limited. Remember, the 787 was supposed to be certified and in service in 2008. Not only did the delays on the 787...
Forum: Jet Blast
17th Sep 2021, 15:17
Replies: 238
Views: 46,286
Posted By tdracer

It does take a certain kind of stupid to not...

It does take a certain kind of stupid to not realize a tidal flat will go away when the tide comes back in...
Forum: Jet Blast
17th Sep 2021, 14:58
Replies: 1,233
Views: 69,247
Posted By tdracer

Whoops... Who could have predicted this? Oh...

Whoops...
Who could have predicted this?
Oh wait...
Forum: Tech Log
16th Sep 2021, 20:56
Replies: 12
Views: 1,451
Posted By tdracer

The performance types tend to be pretty tight...

The performance types tend to be pretty tight lipped about the various engine TSFC numbers (among other things, it's considered to be highly proprietary). But best I was able to gather, the TSFC...
Forum: Jet Blast
16th Sep 2021, 19:52
Replies: 152
Views: 6,223
Posted By tdracer

https://cimg3.ibsrv.net/gimg/pprune.org-vbulletin/...

https://cimg3.ibsrv.net/gimg/pprune.org-vbulletin/316x499/hillbilly_style_roadkill_cooking_40ebaf6c0374175b245b5d0815985bab931fad4b.jpg
16th Sep 2021, 17:14
Replies: 10
Views: 8,830
Posted By tdracer

I hope the people at Airbus are taking a long...

I hope the people at Airbus are taking a long hard at what caused the computers to all fail at pretty much the same time - that's probably not a coincidence - there is some unknown common failure...
Forum: Tech Log
16th Sep 2021, 16:55
Replies: 12
Views: 1,451
Posted By tdracer

When you add in all the extra weight of those big...

When you add in all the extra weight of those big electrical generators, compressors, etc., it's pretty much a push. As I noted, the promised optimization of the engine cycle simply didn't happen -...
Forum: Jet Blast
16th Sep 2021, 15:13
Replies: 40
Views: 2,042
Posted By tdracer

The same madness has happened over here - many...

The same madness has happened over here - many municipalities have either taxed single use bags (most are 10 cents/bag although some places are higher) or banned them outright. They've also banned...
Forum: Tech Log
16th Sep 2021, 14:56
Replies: 12
Views: 1,451
Posted By tdracer

Short answer is yes. Driving the gearbox loads -...

Short answer is yes. Driving the gearbox loads - be it hydraulics, big electrical generators, or something else - take energy from the core of the engine and hence increase fuel burn.
Part of the...
16th Sep 2021, 01:35
Replies: 56
Views: 22,209
Posted By tdracer

Big Pistons Forever It might be worthwhile...

Big Pistons Forever

It might be worthwhile remembering why Boeing launched the MAX.
Boeing didn't really want to do another 737 and was working on a completely new 737 replacement - I knew people...
Forum: Jet Blast
13th Sep 2021, 20:33
Replies: 302
Views: 33,355
Posted By tdracer

A little selective editing their Pattern. Your...

A little selective editing their Pattern. Your quote conveniently ignores that there were four paragraphs of quotes between "drone strike" and "worst US debacle." Not the same sentence, not even the...
Forum: Jet Blast
13th Sep 2021, 02:28
Replies: 302
Views: 33,355
Posted By tdracer

Did you happen to click the link? You know, the...

Did you happen to click the link? You know, the link that takes it the the original New York Times report that the Post references? I've heard the New York Times called a lot of things, but never a...
13th Sep 2021, 02:15
Replies: 56
Views: 22,209
Posted By tdracer

pattern_is_full I wouldn't swear to this,...

pattern_is_full

I wouldn't swear to this, but what I remember is that Boeing is basically self insured.
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