Search found 1389 matches

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by JayinKitsap
Sat Aug 17, 2019 10:53 pm
Forum: Civil Aviation
Topic: Boeing delays 777-8X entry into service
Replies: 141
Views: 22181

Re: Boeing delays 777-8X entry into service

Anyhow, i would think the -8 gets delayed until they make the -8F, at which point the pax model essentially comes for free, without taking up resources now. The problem is the 777-8F offers no performance over the 777F when operating as a freighter. A few users have discussed this in the tech ops t...

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by JayinKitsap
Thu Aug 15, 2019 6:16 pm
Forum: Technical/Operations
Topic: Hydraulic reservoir pressurization/ cavitation?
Replies: 22
Views: 1761

Re: Hydraulic reservoir pressurization/ cavitation?

What happens at the expansion valve is cavitation I would not call it cavitation but rather vaporization: The fluid, all the fluid, turns into a gas and stays a gas for a while. But it does not have the local and very explosive and destructive formation and collapse of gas bubbles inside the fluid....

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by JayinKitsap
Wed Aug 14, 2019 5:11 pm
Forum: Military Aviation & Space Flight
Topic: Potential Turkish F-35 Replacement?
Replies: 32
Views: 2911

Re: Potential Turkish F-35 Replacement?

Once Turkey orders the Su-35's the spare parts for all their F-16s will become quite dear.

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by JayinKitsap
Wed Aug 14, 2019 5:06 pm
Forum: Military Aviation & Space Flight
Topic: Unexplained Russian Explosion
Replies: 63
Views: 3006

Re: Unexplained Russian Explosion

Proper shielding of a reactor is quite heavy, usually a problem with aviation and missiles. Before first use it wouldn't be difficult to shield, but once operated it would be incredibly 'hot'. I suppose it could be a single use weapon that explodes as a dirty bomb over the target. To transfer a lot ...

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by JayinKitsap
Wed Aug 14, 2019 3:31 am
Forum: Military Aviation & Space Flight
Topic: KC-46 Production and Delivery Thread 2019
Replies: 255
Views: 43587

Re: KC-46 Production and Delivery Thread 2019

That link is unreliable and much of it is guesswork. 46009 was the production test 'mule' and the first to hand over to the USAF, ie. leave Seattle. 46007-46016 are all in a state of rework from the USAF moving the goal posts. 46017-46021 were mostly done until the last moving of goal posts. 46017 ...

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by JayinKitsap
Tue Aug 13, 2019 6:48 pm
Forum: Military Aviation & Space Flight
Topic: Study of U.S. Air Force aircraft inventories
Replies: 50
Views: 2274

Re: Study of U.S. Air Force aircraft inventories

Some thoughts: - the report puts a lot of emphasis on keeping production lines open . I'd count the current F-15X acquisition to that. KC-46 production at 10 per year is very slow; amazing to see 767 production planned 50 years after its first flight. We see the same happening in Europe and also Ru...

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by JayinKitsap
Tue Aug 13, 2019 6:22 pm
Forum: Military Aviation & Space Flight
Topic: KC-46 Production and Delivery Thread 2019
Replies: 255
Views: 43587

Re: KC-46 Production and Delivery Thread 2019

I'm confused with the KC-46 spreadsheet. It doesn't show the two July deliveries noted upthread, but it shows the 3 August deliveries. Is something off with the spreadsheet? Other questions are below the link: https://docs.google.com/spreadsheets/d/1xPZP2NmigprVBd5dklYcFOGraAn4C8Z4W0z2TPD-eD0/edit#g...

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by JayinKitsap
Tue Aug 13, 2019 5:45 pm
Forum: Civil Aviation
Topic: Emirates renegotiating 777X order
Replies: 757
Views: 131089

Re: Emirates renegotiating 777X order

I should note that AF has decided to retire their A380's but no mention of the 777's. The choice of which planes to be retired tells the story which plane is more profitable. Airlines are still taking up new 77W's and both A330 and B77W lease rates are generally flat but adequate. The A380 2nd hand ...

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by JayinKitsap
Tue Aug 13, 2019 5:15 pm
Forum: Travel, Polls & Preferences
Topic: Stapleton Airport question - how bad was it, really?
Replies: 27
Views: 4940

Re: Stapleton Airport question - how bad was it, really?

I grew up in Boulder, then back in Denver 1981-1985, regularly flying there for trips. Lots of ski trips. Yes there were some delays, but in total less than DIA if one factors in the 20 mile drive past Stapleton to get to DIA. We used to joke about the D concourse that we were walking half way to Ka...

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by JayinKitsap
Tue Aug 13, 2019 4:27 am
Forum: Civil Aviation
Topic: Confirmed: Mitsubishi Heavy Industries to Acquire CRJ Program from Bombardier
Replies: 331
Views: 37487

Re: Confirmed: Mitsubishi Heavy Industries to Acquire CRJ Program from Bombardier

The decision to open a plant in Pittsburg, CA is mostly related to the 65% (soon 70%) local content required by the Buy America Act. Here, we're lucky if we even require 25% Canadian content. That's also why I don't much future for the two Ontario facilities (Thunder Bay and Kingston) The US contra...

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by JayinKitsap
Tue Aug 13, 2019 4:02 am
Forum: Technical/Operations
Topic: Hydraulic reservoir pressurization/ cavitation?
Replies: 22
Views: 1761

Re: Hydraulic reservoir pressurization/ cavitation?

In an aircraft hydraulic system, we refer to head pressure as the air pressure in the reservoir. Which is of course the same as the pressure of the hydraulic fluid in the reservoir. Lower pressure means lower boiling temperature, so I think temperature may still the cause of the boiling. Don't thin...

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by JayinKitsap
Mon Aug 12, 2019 11:18 pm
Forum: Military Aviation & Space Flight
Topic: New Air Force One
Replies: 24
Views: 2273

Re: New Air Force One

Do they still not have air to air refueling? This will be hard or impossible to add afterwards. So include it please. It's an essentially useless option. It was only included on the last one to limit/exclude competition. The range on this aircraft is such that it will have the ability to land where...

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by JayinKitsap
Mon Aug 12, 2019 10:55 pm
Forum: Civil Aviation
Topic: Confirmed: Mitsubishi Heavy Industries to Acquire CRJ Program from Bombardier
Replies: 331
Views: 37487

Re: Confirmed: Mitsubishi Heavy Industries to Acquire CRJ Program from Bombardier

Toronto Streetcars - Contract signed in 2009 for $1B 204 car contract. The TTC board authorized taking legal action against Bombardier in October 2015 having delivered only 27 by that date. It is hoped that by end of 2019 all will be delivered, but by April 19 only 141 delivered. https://www.thesta...

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by JayinKitsap
Mon Aug 12, 2019 2:59 pm
Forum: Civil Aviation
Topic: Confirmed: Mitsubishi Heavy Industries to Acquire CRJ Program from Bombardier
Replies: 331
Views: 37487

Re: Confirmed: Mitsubishi Heavy Industries to Acquire CRJ Program from Bombardier

Following up on the point about BBD's problems with their rail contracts: . . .... A summary article: https://www.thestar.com/business/opinion/2018/12/17/has-bombardier-finally-run-out-of-track.html and remember that they are retreating from commercial aviation to retrench in to Rail. Seems masochi...

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by JayinKitsap
Mon Aug 12, 2019 5:25 am
Forum: Civil Aviation
Topic: Emirates renegotiating 777X order
Replies: 757
Views: 131089

Re: Emirates renegotiating 777X order

https://www.airfranceklm.com/en/evoluti ... -klm-fleet
-->

seahawk wrote:
The A380 will leave the fleet quickly and they will order more 777-9s.


If what AF indicated is true that fuel burn per seat is 20 25% then the latest WB it will send many A380 to the desert

https://www.airfranceklm.com/en/evoluti ... -klm-fleet

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by JayinKitsap
Mon Aug 12, 2019 3:52 am
Forum: Military Aviation & Space Flight
Topic: New Air Force One
Replies: 24
Views: 2273

Re: New Air Force One

Actually the AF buying two whitetails meant that during the commercial assembly no one knew it would become VC-25. All of the fun stuff is added later.

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by JayinKitsap
Mon Aug 12, 2019 3:49 am
Forum: Military Aviation & Space Flight
Topic: U.S. Navy F/A-18E Super Hornet jet crashes in Death Valley
Replies: 18
Views: 2700

Re: U.S. Navy F/A-18E Super Hornet jet crashes in Death Valley

Suspect that this is the area where the crash occurred. https://www.youtube.com/watch?v=SiAW6u4Yt1w Incredible video as well as the one following. At 500 nm 500' disappears in less than a second. Most of the passes would be over in 5 to 6 seconds. No time to correct if out of position. May the pilo...

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by JayinKitsap
Mon Aug 12, 2019 3:32 am
Forum: Military Aviation & Space Flight
Topic: Study of U.S. Air Force aircraft inventories
Replies: 50
Views: 2274

Re: Study of U.S. Air Force aircraft inventories

I have always seen the A-10 as one of those great lower cost weapons like the sidewinder missile. They should not be put out to pasture but maybe just in the ANG, for the middle east type of close air support it strikes fear in the enemy almost like no other plane. Meanwhile the F-35 is pretty price...

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by JayinKitsap
Mon Aug 12, 2019 3:21 am
Forum: Civil Aviation
Topic: Confirmed: Mitsubishi Heavy Industries to Acquire CRJ Program from Bombardier
Replies: 331
Views: 37487

Re: Confirmed: Mitsubishi Heavy Industries to Acquire CRJ Program from Bombardier

Following up on the point about BBD's problems with their rail contracts: With Swiss railways - "Switzerland’s largest-ever trains contract now calls for most of the 62 trains on order to be delivered by the end of 2020" it has delivered 15 trains as of May 2019, running 5 years late. http...

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by JayinKitsap
Mon Aug 12, 2019 1:40 am
Forum: Civil Aviation
Topic: Boeing 777X Testing Thread - 2019
Replies: 636
Views: 164916

Re: Boeing 777X Testing Thread - 2019

Taxi testing for 779 N779XW on 7 Aug https://twitter.com/JenSchuld/status/1159168567721357312?s=20 https://pbs.twimg.com/media/EBZQGJfUwAETk3C?format=jpg https://twitter.com/JenSchuld/status/1159202034534375424?s=20 Is that a MiG-29 in that photo? Privately owned? Just odd to see that in the backgr...

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by JayinKitsap
Sun Aug 11, 2019 6:39 pm
Forum: Civil Aviation
Topic: What happens to Jeffrey Epstein's aircraft following his death
Replies: 21
Views: 5083

Re: What happens to Jeffrey Epstein's aircraft following his death

Epstein sold the 727-200 just weeks before his arrest. https://www.zerohedge.com/news/2019-07-11/epstein-sold-lolita-express-weeks-arrest-court-document I hope they steam cleaned the carpets well on the Lolita Express. Being a 727 it probably had minimal value. Statements made by Epstein's legal te...

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by JayinKitsap
Sun Aug 11, 2019 5:03 pm
Forum: Civil Aviation
Topic: Emirates renegotiating 777X order
Replies: 757
Views: 131089

Re: Emirates renegotiating 777X order

Emirates will accept every last 777X it has ordered. The 777X order was placed when there was still a possibility of the A380NEO replacing the current A380's. Now Emirates have has 120 A380's with no direct replacement. They would need 180 777-9's just to keep the same capacity. The 777-9's being t...

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by JayinKitsap
Sat Aug 10, 2019 10:22 pm
Forum: Civil Aviation
Topic: Updated: Qantas saying it is almost ready to select Project Sunrise aircraft
Replies: 1483
Views: 269284

Re: Updated: Qantas saying it is almost ready to select Project Sunrise aircraft

In sum, it just seems like airliners of this nature are doomed to be "niche" despite all of the OEMs' precautions; in these, the days when everyday 200seaters can realistically operate 16-18hr routes profitably. Great points LAX- Some want a ULH that can circumvent the earth, no worries t...

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by JayinKitsap
Sat Aug 10, 2019 10:17 pm
Forum: Civil Aviation
Topic: Emirates renegotiating 777X order
Replies: 757
Views: 131089

Re: Emirates renegotiating 777X order

It looks like the 787 is about midsection as well in other images. Scroll down to the second image in this article. https://thepointsguy.com/news/how-airlines-are-affected-by-the-rolls-royce-engine-trouble-on-the-boeing-787/ Exactly, both the A350 and 787 can fit new higher bypass engines. Vladex i...

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by JayinKitsap
Sat Aug 10, 2019 9:45 pm
Forum: Civil Aviation
Topic: Boeing 777X Testing Thread - 2019
Replies: 636
Views: 164916

Re: Boeing 777X Testing Thread - 2019

It's definitely a good looking aircraft. Can we expect the wing flex to more along the lines of the 787 now since the wings are carbon fiber? (Correct me if I'm wrong on that). The amount of wing flex is tied to several factors. But the most important ones are the strength to stiffness ratio of the...

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by JayinKitsap
Sat Aug 10, 2019 3:45 am
Forum: Military Aviation & Space Flight
Topic: Latest on the CH53K
Replies: 8
Views: 1117

Re: Latest on the CH53K

https://www.americanmachinist.com/news/ ... r-contract
-->

A new batch was funded, I suspect tucked inside is extra cash to solve the problems.

https://www.americanmachinist.com/news/ ... r-contract

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by JayinKitsap
Fri Aug 09, 2019 6:34 am
Forum: Civil Aviation
Topic: The Mistakes Behind Bombardier’s Commercial Aircraft Failures
Replies: 45
Views: 7012

Re: The Mistakes Behind Bombardier’s Commercial Aircraft Failures

A bit sassy, but the one business the scored in - they sold. Ski Doos. Personally, I think BBD could have pulled off the C-series if their rail operations hadn't been such a drain I recall there were 5 major projects that teetered on default. Hard to get the next customer that way when you can't bon...

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by JayinKitsap
Wed Aug 07, 2019 8:12 pm
Forum: Civil Aviation
Topic: More Bad News for Boeing: Poor quality complaints from customers
Replies: 95
Views: 24904

Re: More Bad News for Boeing: Poor quality complaints from customers

GM was once the world's largest car maker, it had 44% of the US market in 1960 with 87% of US sales coming from the Motown3 as well as American Motors. But their quality was just so-so, cars loved the mechanic back then and they were far simpler. By the 70's both VW and the Japanese companies were m...

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by JayinKitsap
Tue Aug 06, 2019 10:57 pm
Forum: Technical/Operations
Topic: Was it possible to build the MAX on 757 Platform instead of 737
Replies: 61
Views: 9567

Re: Was it possible to build the MAX on 757 Platform instead of 737

what are you talking about? The 757 even today performs as good as the A321 which is just a cheap copy of the B757. If Boeing right today announced an updated digital 0version of the B757 the A321 sales would plummet! The 757 performs as well as an A321LR on about 30% more fuel burn. The loss of to...

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by JayinKitsap
Tue Aug 06, 2019 10:32 pm
Forum: Military Aviation & Space Flight
Topic: KC-46 Production and Delivery Thread 2019
Replies: 255
Views: 43587

Re: KC-46 Production and Delivery Thread 2019

Any further news about Cobham, it looks to be on the critical path. KC-46 deliveries have been plagued by a number of issues, the most critical of which are problems with the remote vision system (RVS), which is used by the crew during the refueling process, and issues with maximum loads being place...

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by JayinKitsap
Tue Aug 06, 2019 7:37 pm
Forum: Civil Aviation
Topic: AF signs MOU for 60 A220 plus 30 options and 30 purchase rights, A380's to be retired by 2022
Replies: 559
Views: 94656

Re: AF signs MOU for 60 A220 plus 30 options and 30 purchase rights, A380's to be retired by 2022

Still the most important thing for the A220 is to get production rates up. Will it by at rate 10 by 2021? at rate 15 by 2023? That is the key to the program, if it ambles along below rate 10 for several years, the backlog will stretch too far into the future to land significant sales.

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by JayinKitsap
Tue Aug 06, 2019 7:32 pm
Forum: Civil Aviation
Topic: Boeing 787 deferred production cost watch
Replies: 164
Views: 24922

Re: Boeing 787 deferred production cost watch

I can't believe we have had a year of arguing over a number that tells investors more about Boeing's situation in 2011 than its situation today. The deferred production cost that remains today is an artifact of Boeing's massive screwup in designing the 787 production process, a screwup which had mo...

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by JayinKitsap
Mon Aug 05, 2019 5:18 pm
Forum: Technical/Operations
Topic: High pressure hydraulics vs bleed air
Replies: 15
Views: 1977

Re: High pressure hydraulics vs bleed air

High pressure air (>2,000 psi) has super strict cleanliness requirements. Any oil can cause an explosion, it is basically a diesel engine if a fuel is present. It is compressible (as others noted), expansion because of the volume change can cause intense cooling (as others noted). I've done test equ...

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by JayinKitsap
Sun Aug 04, 2019 8:17 pm
Forum: Civil Aviation
Topic: Boeing 787 deferred production cost watch
Replies: 164
Views: 24922

Re: Boeing 787 deferred production cost watch

I think the current orders fill out the production block. Soon Boeing will have $30M per plane extra margin to play with, so they can be agressive on pricing or enjoy high margins on future sales campaigns.

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by JayinKitsap
Sun Aug 04, 2019 6:38 am
Forum: Civil Aviation
Topic: Analysis & opinion on a hypothetical rule or regulation on US airports
Replies: 8
Views: 951

Re: Analysis & opinion on a hypothetical rule or regulation on US airports

There needs to be realistic and competitive gate leases and allocation. If say AS wants 10 new gates at PDX and they are not available, the Port Authority can say "we can extend this concourse by 10 gates if you sign a 10 year lease for $X or pay $$$x for the construction and a 10 years lease f...

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by JayinKitsap
Sat Aug 03, 2019 8:27 pm
Forum: Travel, Polls & Preferences
Topic: A380 High Density / Low Cost Configuration
Replies: 11
Views: 1545

Re: A380 High Density / Low Cost Configuration

Maybe WN should buy 50 of them. Imagine the revenue LA to NYC and return. That revenue wouldn't actually be that much, if anything at all. They'd be offering far more capacity than there is demand, creating a huge price dump. Yields would be down the drain. They'd actually lose money on it if they ...

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by JayinKitsap
Sat Aug 03, 2019 7:53 pm
Forum: Travel, Polls & Preferences
Topic: A380 High Density / Low Cost Configuration
Replies: 11
Views: 1545

Re: A380 High Density / Low Cost Configuration

Maybe WN should buy 50 of them. Imagine the revenue LA to NYC and return.

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by JayinKitsap
Fri Aug 02, 2019 2:47 am
Forum: Military Aviation & Space Flight
Topic: KC-46 Production and Delivery Thread 2019
Replies: 255
Views: 43587

Re: KC-46 Production and Delivery Thread 2019

None delivered in July. There must be something going on backstage, possibly the Air Force doesn't need that many until the boom fix, the cobham wing units, and the vision system are all fixed and installed.

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by JayinKitsap
Wed Jul 31, 2019 2:18 am
Forum: Civil Aviation
Topic: AF signs MOU for 60 A220 plus 30 options and 30 purchase rights, A380's to be retired by 2022
Replies: 559
Views: 94656

Re: AF signs MOU for 60 A220 plus 30 options and 30 purchase rights, A380's to be retired by 2022

Oh... Why is everyone forgetting AC (including myself)? Lightsaber I recall a couple of months ago you bringing up a threshold order level before the lease market opens up. This AF order probably took the A220 over the threshold. Possibly Spirit or similar really needed to do a lease deal vs direct...

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by JayinKitsap
Tue Jul 30, 2019 6:29 pm
Forum: Travel, Polls & Preferences
Topic: Any chance to save the A380 still?
Replies: 94
Views: 9035

Re: Any chance to save the A380 still?

Revelation from the AF 220 thread AF/KL announces retirement of the remaining A380s: The Air France-KLM Board of Directors today approved the retirement in principle of the remaining seven A380s from the Air France fleet by 2022, the phase out of three additional aircraft having been decided previou...

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by JayinKitsap
Tue Jul 30, 2019 1:24 am
Forum: Military Aviation & Space Flight
Topic: Chengdu J-20 potential DPRK export?
Replies: 35
Views: 3243

Re: Chengdu J-20 potential DPRK export?

Anyone have any information about the J-20 performance. I saw in Wiki a 6,000 km range, which is long, but that would affect performance I suspect.

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by JayinKitsap
Mon Jul 29, 2019 5:23 am
Forum: Civil Aviation
Topic: WN Practices Sustainable?
Replies: 148
Views: 14428

Re: WN Practices Sustainable?

The open seating is one feature of Southwest I don't like! Then fly someone else. I do. I fly Alaska. Better product. Better mileage program. More partners. Often better prices in coach. First Class and Premium Economy if I'm feeling extravagant. I have their credit card, so I get a free checked ba...

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by JayinKitsap
Sat Jul 27, 2019 5:34 pm
Forum: Military Aviation & Space Flight
Topic: Potential Turkish F-35 Replacement?
Replies: 32
Views: 2911

Re: Potential Turkish F-35 Replacement?

Considering that they preferred the S400 over the F-35, I can see them going Russian. I too see them going with Russian fighters, but that would probably cause their leaving NATO. The S400 has already pushed them to the perimeter. They already may find it difficult to get parts for the fighters the...

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by JayinKitsap
Sat Jul 27, 2019 2:48 am
Forum: Technical/Operations
Topic: Bleed AIr Off the Low Pressure Compressor?
Replies: 17
Views: 3329

Re: Bleed AIr Off the Low Pressure Compressor?

Electric packs are more efficient. Bleed air is compressed, causing heat. Only a portion of the heat is needed, and there is often excess when air temps are above -50F. So cooling of the air is needed, causing more energy used. Electric allows for the compression and temperature to not exceed the re...

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by JayinKitsap
Sat Jul 27, 2019 2:33 am
Forum: Civil Aviation
Topic: History of the passenger boarding bridge
Replies: 16
Views: 3734

Re: History of the passenger boarding bridge

About 20 years ago I did an updated version of the HVAC supply duct that are on some of the extending bridges. It is usually 3 nested GFRP ducts. I redid the UHMW bearing design in the slide joints as the earlier version was a bit prone to sticking if extended all the way to the stops. I never seem ...

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by JayinKitsap
Fri Jul 26, 2019 10:22 pm
Forum: Military Aviation & Space Flight
Topic: KC-46 Production and Delivery Thread 2019
Replies: 255
Views: 43587

Re: KC-46 Production and Delivery Thread 2019

The vision system is Boeing's to fix, the boom not able to handle A-10's and some others is the Air Force's problem. It specified in the RFP the minimum force for the connection to the plane, it was like 1.5 x what the A-10 can push. All of the planes that have been certified to date for transfer ha...

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by JayinKitsap
Fri Jul 26, 2019 10:04 pm
Forum: Military Aviation & Space Flight
Topic: Why couldn’t the space shuttle fly to the moon ?
Replies: 29
Views: 2593

Re: Why couldn’t the space shuttle fly to the moon ?

The Saturn V had enough to lift the Apollo capsule, lunar module and the stage to lift the capsule out of the moon orbit. The size of the module or extra fuel to just lift the shuttle out of Lunar orbit would be far bigger. I guess we could use a pair of Saturn V's along with a really large fuel tan...

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by JayinKitsap
Thu Jul 25, 2019 7:15 am
Forum: Military Aviation & Space Flight
Topic: USAF Considering New Build F-15X
Replies: 816
Views: 75035

Re: USAF Considering New Build F-15X

Spar, the below is a graphic and link to an article outlining the current process to get a new trainee through flight training and up to standard. At the moment you can see that a new pilot takes approximately 11 months to go from conversion onto the jet to be able to be deployed to a conflict but ...

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by JayinKitsap
Wed Jul 24, 2019 3:25 pm
Forum: Civil Aviation
Topic: Boeing 797 Thread - 2019
Replies: 1236
Views: 167452

Re: Boeing 797 Thread - 2019

Looking at the NMA7-200 section inserting a compression strut just above the ceiling to support the bins there would allow a circular arc from the floor beams to this strut, then a flatter arc above the strut. The shell would then be 4 circular arcs with the sides being one radius, the bottom a 2nd...

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by JayinKitsap
Wed Jul 24, 2019 3:06 pm
Forum: Civil Aviation
Topic: Boeing 797 Thread - 2019
Replies: 1236
Views: 167452

Re: Boeing 797 Thread - 2019

I have refrained from posting for a few days; and would like to give my opinion at this point on some of the issues raised and debate on this forum: 1) I generally agree with the point that a certain poster was clearly showing (up to that point) a highly negative view and had proposed a whole colle...

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