Boeing P-8A Poseidon (737-800EFV) MMA (Multi-mission Maritime Aircraft)

Scott Kenny said:
I thought the JSTAR radar was too close to the ground under a 737, and was having issues with reflections off the engines?
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I think he’s referring to the large belly AESA radar seen on some P-3s and P-8s. It is apparently a ground surveillance radar with several relevant modes. I think it used to be labeled “littoral surveillance radar” or something like that.
 
FighterJock said:
Would that also mean that the RAF P-8s will also be getting this upgrade as well?
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From what I can find it's definitely increment 3 but nothing about blocks. RAAF is being upgraded to block 2. So on the basis that the UK hasn't received them yet, I'd hedge on saying that it will likely be block 2 at this stage.
 
The RAF needs to spend big time on defence we should upgrade the P-8s to the block 2 standard to keep up with the rest of the countries that have the P-8s. But that is down to the UK MOD and the RAF ultimately.
 
FighterJock said:
The RAF needs to spend big time on defence we should upgrade the P-8s to the block 2 standard to keep up with the rest of the countries that have the P-8s. But that is down to the UK MOD and the RAF ultimately.
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Hopefully they have learned from their Sentry and Sentinel stupidity. But I doubt that.

Chris
 
Scott Kenny said:
The single greatest threat to HMArmed Forces is HMTreasury.
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That was always the case, but this lot appear to be particularly dense. I attended an RAFHS seminar last week. I never thought I'd ever hear retired (and I must emphasise retired) senior forces offices slag off a Tory government.

I'll get me coat.

Chris
 
Especially when it has nothing to do with the Government, it is after all HM Treasury that pull the strings.
 
Will that ultimately mean that the RC-135 SIGINT aircraft be getting replaced in the future with this update for the P-8? Or just compliment the RC-135s?
 
I'm just wondering how many P-8s will get this (surely the whole fleet isn't getting this refit). There are 10 EP-3s, but a 1:1 replacement is going to blow an uncomfortably large hole in the ASW fleet that already seems rather small.
 
TomS said:
I'm just wondering how many P-8s will get this (surely the whole fleet isn't getting this refit). There are 10 EP-3s, but a 1:1 replacement is going to blow an uncomfortably large hole in the ASW fleet that already seems rather small.
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Why not buy 10x EP-8s on top of all the ASW P-8s?
 
Scott Kenny said:
Why not buy 10x EP-8s on top of all the ASW P-8s?
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That would obviously have been ideal, but the USN hasn't placed additional P-8 orders for itself in several years and has not requested them, as far as I know.

Buying the ELINT kit as a retrofit to ASW P-8s probably also lets them end-run the requirement for a new competition (a la EP-X) that might end up specifying a new airframe.

You can read about the sordid history of the 2008-10 Navy EP-X here:


And

 
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@TomS : Yes, I read that piece already but couldn´t see any details regarding that question. See how the geometry and black vulcanized joint could make it retractable upward.
 
TomcatViP said:
Do we know if the pod is retractable?
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In what sense?
That it can extend downwards from the photographed position to better clear the engines, but would drag on the ground if the pod was that far down all the time? Possibly.
That it can retract further upwards? unlikely. The pod looks like it is as deep as it possibly can be without getting friendly with the runway.
 
TomcatViP said:
@TomS : Yes, I read that piece already but couldn´t see any details regarding that question. See how the geometry and black vulcanized joint could make it retractable upward.
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There's no where for it to retract into. There are auxiliary fuel tanks in the lower cargo bay above where the pod is mounted.
 
GTX said:
breakingdefense.com

New torpedoes for P-8s and Pillar II awards: AUKUS leaders in London - Breaking Defense

“[We] probably would need some time to figure out what the timetable is [for industry solicitations] because part of it requires three nations to commit funds, and so I wouldn't want to get ahead of anybody else's budget,” said a senior US defense official.
breakingdefense.com breakingdefense.com
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Today’s meeting of US Defense Secretary Llyod Austin, UK Secretary of State for Defence John Healey and Australian Defense Minister Richard Marles came with three top-level announcements related to Pilar I, which involves the nuclear submarine fleets.

First, UK-made Sting Ray torpedoes, produced by BAE Systems, will be approved for use on the combined fleets of P-8 sub hunting aircraft. All three AUKUS nations operate the Boeing-made maritime surveillance aircraft; the US operates 120, Australia 12, and the United Kingdom nine.
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FighterJock said:
Will that ultimately mean that the RC-135 SIGINT aircraft be getting replaced in the future with this update for the P-8? Or just compliment the RC-135s?
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It effectively replaced the EP-3s. USAF is still flailing a bit on an RC-135 replacement, but it may become Space Force's mission ultimately.
 
BlackBat242 said:
RC-135 length 136', fuselage diameter 144".

P-8 length 129' 6", fuselage diameter 148".

Not very different.
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I must've been thinking of the older 737 models including the USAF's C-43 as they're smaller than the C-135 line, it just drives home how big the 737 airframe has grown as it has evolved over the decades since its' first flight in 1967.
 
Apophenia said:
It's the wings where the big differences show up between the 'C-135 and 737s/P-8A ...

RC-135 - Wing area 226 m2; span 39.88 m;
P-8A ---- Wing area 154 m2; span 37.64 m (raked wingtips)
737-900- Wing area 125 m2; span 34.32 m (incl. winglets)
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Wing area and span alone are apples to orange comparisons. Better comparisons are wing loading and aspect ratio, thrust loading is better for any twin vs a quad. FWIW the stock -800 has an AR of 9.44 so

RC-135 W/L 647 kg/m2 AR 7
P-8 W/L 557 kg/m2 AR ~10

The P-8 is working with a more lightly loaded, efficient wing and higher thrust, more efficient engines, advantage P-8.
 

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