F135 Upgrades, Reengining Considered In New F-35 Propulsion

All about the Pratt & Whitney F135 and the (cancelled) General Electric/Rolls-Royce F136
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mixelflick

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Unread post12 Jun 2020, 15:50

Oh boy.... more thrust, lower fuel burn. On top of (already) the world's most powerful fighter engine..

This is really going to kill the boys working on the Idylize 30, LOL..
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weasel1962

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Unread post13 Jun 2020, 08:09

4 engines generating close to 200000 lbs of thrust. This could be one of the fastest bombers there is, not to mention the bomb loads.
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sprstdlyscottsmn

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Unread post13 Jun 2020, 13:55

weasel1962 wrote:4 engines generating close to 200000 lbs of thrust. This could be one of the fastest bombers there is, not to mention the bomb loads.

B-21 has two engines and won't have afterburner. It will be closer to 60,000lbt, but given that it is supposed to be half the size of a B-2 it will be fine.
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steve2267

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Unread post13 Jun 2020, 19:24

sprstdlyscottsmn wrote:
weasel1962 wrote:4 engines generating close to 200000 lbs of thrust. This could be one of the fastest bombers there is, not to mention the bomb loads.

B-21 has two engines and won't have afterburner. It will be closer to 60,000lbt, but given that it is supposed to be half the size of a B-2 it will be fine.


Have two engines been confirmed? I made a bet with someone around here that the B-21 will have two engines... I need to collect! :drool:
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sferrin

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Unread post13 Jun 2020, 20:03

sprstdlyscottsmn wrote:
weasel1962 wrote:4 engines generating close to 200000 lbs of thrust. This could be one of the fastest bombers there is, not to mention the bomb loads.

B-21 has two engines and won't have afterburner. It will be closer to 60,000lbt, but given that it is supposed to be half the size of a B-2 it will be fine.


So far as we know the engines haven't been identified. Sure, we assume they'll be non-afterburning F135s but I've seen nothing definitive.
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marauder2048

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Unread post13 Jun 2020, 20:49

sferrin wrote:
sprstdlyscottsmn wrote:
weasel1962 wrote:4 engines generating close to 200000 lbs of thrust. This could be one of the fastest bombers there is, not to mention the bomb loads.

B-21 has two engines and won't have afterburner. It will be closer to 60,000lbt, but given that it is supposed to be half the size of a B-2 it will be fine.


So far as we know the engines haven't been identified. Sure, we assume they'll be non-afterburning F135s but I've seen nothing definitive.


The AFRL "Vision mission" definition for LRS subsonic ended up requiring a twin-engine 60,000 lbt configuration
(driven by takeoff requirements, 8,000 ft runway, sea-level 95 degree F day). It was a half sized B-2.

lrs-subsonic-config.png
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lrs-subonic-profile.png
variable-geometry-simmons.pdf
Design and Control of a Variable Geometry Turbofan with An Independently Modulated Third Stream
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weasel1962

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Unread post14 Jun 2020, 04:04

steve2267 wrote:
sprstdlyscottsmn wrote:
weasel1962 wrote:4 engines generating close to 200000 lbs of thrust. This could be one of the fastest bombers there is, not to mention the bomb loads.

B-21 has two engines and won't have afterburner. It will be closer to 60,000lbt, but given that it is supposed to be half the size of a B-2 it will be fine.


Have two engines been confirmed? I made a bet with someone around here that the B-21 will have two engines... I need to collect! :drool:


I think need to wait until end next year (or later). Understand there will be a public unveiling before the first flight.
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