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cooldw57
23 Feb 05,, 04:38
Joint Strike Fighter, the first Carrier based Stealth Fighter , or F-35. Is under development by Rockheed Martin. It will gradually replace FA/18 and F15/16 for the current carrier airplanes configuration. Anyone knows anything about this baby?

cooldw57
23 Feb 05,, 04:39
http://www.piermodels.com/acatalog/rv04587%20Lockheed%20X-35%20(F-35)%20JSF.jpg

Dima
23 Feb 05,, 04:56
i believe it's VTOL engine is based on the engine for the Yak-141, can anyone confirm this?

Terran empire
23 Feb 05,, 05:07
Joint Strike Fighter, the first Carrier based Stealth Fighter , or F-35. Is under development by Lockheed Martin. It will gradually replace FA/18 and F15/16 for the current carrier airplanes configuration. Anyone knows anything about this baby?
F 15 s and F16 s are not Carrier based The F 35 ( still no nickname?) will replace AV 8 s F 14 and take over the Air superiority role from the acting F 18's there but with all the new Kits the Navy has in the works for the F/A 18 E/F ( last i checked air to ait refuel, Anti Sam and AntiSub) F/A 18 s will still be in the service for a long time. it will take over for the F 16 ( the F22 will be replacing the F15)
It comes in three versions
The Base line F/A 35 A for the Airforce,
A VTOL version for the Marines the F/A 35 B
and the Navy gets a version with longer wings and Tails Called the F/A 35 C
it will also be going too a lot of other countries.
http://www.jsf.mil/NSFrames.htm

Terran empire
23 Feb 05,, 05:20
i believe it's VTOL engine is based on the engine for the Yak-141, can anyone confirm this? it's not. it uses a Lift fan system slaved too the main jet not lift jets. this means that it does not hiccup like the Harrier

highsea
23 Feb 05,, 05:32
i believe it's VTOL engine is based on the engine for the Yak-141, can anyone confirm this?
No. The Yak-41/141 uses 2 separate lift engines in addition to the main engine. The main engine is the Soyuz R-79 V300.

The F-35 uses the Pratt Whitney F135, which is an evolution of the F119 that is used in the Raptor. For lift, the F-35B uses a Rolls Royce/Allison fan that is shaft driven from the F135 engine. The Boeing offer, the X-32 had a separate lift engine, but the F-35 doesn't.

jgetti
23 Feb 05,, 18:53
i believe it's VTOL engine is based on the engine for the Yak-141, can anyone confirm this?

It uses a Pratt & Whitney F-119 derivitive, same as the other JSF variants.

jgetti
23 Feb 05,, 19:04
The Boeing offer, the X-32 had a separate lift engine, but the F-35 doesn't.

I think you have the McDonnell Douglas JSF and the Boeing X-32 mixed up. The Boeing X-32 used a more modern version of the direct lift ducted nozzle setup using only one engine like the AV-8B did. The McDonnell Douglas JSF competitor was originally going to use a vertical fan similar to the X-35, but used diverted airflow from the engined to spin the vertical fan as opposed to a driveshaft. McDonnell selected this method because it was felt that it would yield the most performance with the least reliability issues/complexity.

The thing was, McDonnell's design would only work with the GE F-120 variable cycle type of engine. When the pentagon selected Pratt as the prime contractor for JSF engines, McDonnell's concept wouldn't work without the diverted airflow duct getting too large. Since other contingency plans were further into development by Boeing and Lockheed, McDonnell's only option was to put an extra engine in the STOVL variant for lift. The contract called explicitly for one engine, and McDonnell did not make the downselect. :mad:

That's precisely when McDonnell Douglas decided to sell out to Boeing.

Bill
24 Feb 05,, 01:42
Got any pix of the McDonnel entry bro?

Dima
24 Feb 05,, 02:57
well, i don't care if the Yak-141 had two engines and, i heard that the engine that the powers the F-35 was based on the Yak-141 design, can anyone support this? highsea, are you from rfforces.com, then you know that they talked about this there

http://home.iae.nl/users/wbergmns/info/jsf.htm

after the stats, it says that it was inspired by the Yak-141 engine, can anyone else find another site?

highsea
24 Feb 05,, 03:45
I think you have the McDonnell Douglas JSF and the Boeing X-32 mixed up...That's precisely when McDonnell Douglas decided to sell out to Boeing.My bad! I had already left by the time MD and Boeing merged- you're right, the X-32 used a direct lift design similar to the AV-8B. I got confused!! :eek:

Lol, even though my loyalties lie with Boeing, I really hated the X-32. It was one of the absolutely ugliest AC ever designed...barf!

http://www.aeroflight.co.uk/types/usa/boeing/x-32/c22-621-19.jpg

Dima
24 Feb 05,, 03:53
yes, ugliest bird in the sky, my opinion

i have a question, why was the X-35 chosen over the X-32?

cooldw57
24 Feb 05,, 04:19
F 15 s and F16 s are not Carrier based The F 35 ( still no nickname?) will replace AV 8 s F 14 and take over the Air superiority role from the acting F 18's there but with all the new Kits the Navy has in the works for the F/A 18 E/F ( last i checked air to ait refuel, Anti Sam and AntiSub) F/A 18 s will still be in the service for a long time. it will take over for the F 16 ( the F22 will be replacing the F15)
It comes in three versions
The Base line F/A 35 A for the Airforce,
A VTOL version for the Marines the F/A 35 B
and the Navy gets a version with longer wings and Tails Called the F/A 35 C
it will also be going too a lot of other countries.
http://www.jsf.mil/NSFrames.htm

Wow, you really know what you are talking! :)

F-35 C will be the Navy's version, with only one big objective: being able to take off from a carrier. Lots of European and Canadian companies got contracts with JSF parts, it will probably be exported to lots of US Allies in the near future. :)

highsea
24 Feb 05,, 04:35
well, i don't care if the Yak-141 had two engines and, i heard that the engine that the powers the F-35 was based on the Yak-141 design, can anyone support this? highsea, are you from rfforces.com, then you know that they talked about this there
Dima, Pratt Whitney does not share technology with Soyuz. The comparison is not one of engines, it's one of concepts. i.e direct lift, or lift plus cruise. The Yak and the F-35 use the lift plus cruise concept. i.e there is a separate component that is employed to generate lift. In the Yak, it is a pair of smaller engines. In the F-35 it is done by a shaft driven fan off the main engine.

The Harrier and the X-32 used the direct lift concept. i.e. thrust was diverted for lift.

That is where the similarity ends.


after the stats, it says that it was inspired by the Yak-141 engine, can anyone else find another site?
NO IT DOESN"T! It says:

Inspired by the Russian Yak-141, the X-35B incorporates a separate lift fan that is powered by the F119 engine but provides an independent source of thrust in hover.
Again, just so you are COMPLETELY CLEAR...Listen carefully... PRATT WHITNEY DOES NOT SHARE TECH WITH SOYUZ! The "inspiration" is the lift plus cruise concept. Anybody who tells you that the F119 is derived from a Soyuz engine is full of cr*p.

highsea
24 Feb 05,, 04:39
i have a question, why was the X-35 chosen over the X-32?The lift fan was considered to be superior to the direct lift system used by Boeing, for various reasons. In the conventional versions, the space that the fan occupies in the "B" variant can be used for fuel, future weapons, EW, etc. It was considered more versatile.

Terran empire
24 Feb 05,, 04:50
The lift fan was considered to be superior to the direct lift system used by Boeing, for various reasons. In the conventional versions, the space that the fan occupies in the "B" variant can be used for fuel, future weapons, EW, etc. It was considered more versatile.
It also did not help that the boeing X32 prototype would have required massive restructuring and probably would have looked or been nothing like the production version.

highsea
24 Feb 05,, 05:33
... and probably would have looked or been nothing like the production version.
That would have been a blessing.

Terran empire
24 Feb 05,, 06:00
That would have been a blessing.
Hmmmm A10 is a Beauty queen by comparison. It looked like it was going too "Eat any one in its way, i think thats why so many people liked it, It was begging too have Shark Teeth. but from the Projections it would still have been ugly.

jgetti
24 Feb 05,, 14:54
My bad! I had already left by the time MD and Boeing merged- you're right, the X-32 used a direct lift design similar to the AV-8B. I got confused!! :eek:

Lol, even though my loyalties lie with Boeing, I really hated the X-32. It was one of the absolutely ugliest AC ever designed...barf!

http://www.aeroflight.co.uk/types/usa/boeing/x-32/c22-621-19.jpg


Yea, even we called it "The Monica" or "The Lewinski" because all it did was suck and blow!! LOL

jgetti
24 Feb 05,, 14:55
Got any pix of the McDonnel entry bro?

I'll see if I can dig one up.

jgetti
24 Feb 05,, 17:46
Got any pix of the McDonnel entry bro?

These are all I can find right now.....

Bill
24 Feb 05,, 23:46
Sharp looking bird.