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Author Topic: Boeing swing-wing fighter - TFX, FX or ?  (Read 761 times)

Offline circle-5

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Boeing swing-wing fighter - TFX, FX or ?
« on: August 01, 2018, 02:50:59 pm »
Based on earlier posts in this thread, this appears to be a model of the single-seat Boeing 818 variant.  My understanding of the TFX requirement is that it always was a two-seater (early ones were tandem, and later side x side).  So I'm not sure where this fits in ...
« Last Edit: August 10, 2018, 05:34:56 am by PaulMM (Overscan) »

Offline Sundog

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Re: Boeing swing-wing fighter - TFX, FX or ?
« Reply #1 on: August 01, 2018, 05:25:15 pm »
Nice pics for a cool design. Thanks for sharing.

Offline circle-5

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Re: Boeing swing-wing fighter - TFX, FX or ?
« Reply #2 on: August 02, 2018, 09:09:12 am »
Tony Buttler thinks this •might• be an early F-X (F-15) proposal.  The early (heavy) ones all had VG and if the spurious tail number suggests 1967, it might be a better fit ...

Offline Sundog

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Re: Boeing swing-wing fighter - TFX, FX or ?
« Reply #3 on: August 02, 2018, 04:50:03 pm »
Tony Buttler thinks this •might• be an early F-X (F-15) proposal.  The early (heavy) ones all had VG and if the spurious tail number suggests 1967, it might be a better fit ...

That makes sense, given what we've seen of the MAC and GD VG designs from that time frame.

Offline PaulMM (Overscan)

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Re: Boeing swing-wing fighter - TFX, FX or ?
« Reply #4 on: August 10, 2018, 05:32:57 am »
According to F-15 EAGLE Origins and Development 1964 - 1972 by Jacob Neufeld Boeing was one of three contractors awarded concept formulation studies for FX in March 1966 (others were North American Aviation and Lockheed - Grumman participated at its own expense).

On 11 August 1967 the USAF sent requests for a second round of studies to 7 companies. General Dynamics and McDonnell-Douglas won contracts, Grumman, Fairchild-Hiller and North American Aviation all participated without funding at company expense. This leaves 2 companies which either didn't bid or didn't win contracts and refused to fund their own studies - Boeing is likely to be one.

May 1968 – concept definition agreed. RFP for FX contract definition issued to McDonnell-Douglas, North American, Grumman, General Dynamics, Lockheed, LTV, Fairchild-Hiller, Boeing.

August 1968 – Only 4 serious bids were received; North American (NR-335), McDonnell-Douglas (Model 199B), Fairchild-Hiller and General Dynamics.

I don't know anything specific about the Boeing FX studies of 1966, though Neufeld mentions that contractors in general favoured podded engine designs.
« Last Edit: August 10, 2018, 05:39:46 am by PaulMM (Overscan) »
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Offline PaulMM (Overscan)

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Re: Boeing swing-wing fighter - TFX, FX or ?
« Reply #5 on: August 10, 2018, 06:07:23 am »
Separated to own topic.

Boeing Model 837-663 was apparently the Boeing VAX design that looked like a scaled down TFX. This is clearly USAF not Navy but possibly similar? VAX was 1962-1963.

Possible Boeing VFAX (1965) for comparison



Boeing/EWR 360 (1964)

https://www.secretprojects.co.uk/forum/index.php/topic,452.msg61868.html#msg61868

« Last Edit: August 10, 2018, 06:16:47 am by PaulMM (Overscan) »
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Offline PaulMM (Overscan)

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Re: Boeing swing-wing fighter - TFX, FX or ?
« Reply #6 on: August 10, 2018, 06:23:36 am »
Boeing TFX isn't as close as I thought actually... The vertical tail on this model looks wrong stuck in the tunnel between the two engine pods.



« Last Edit: August 11, 2018, 05:54:11 am by PaulMM (Overscan) »
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Offline hesham

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Re: Boeing swing-wing fighter - TFX, FX or ?
« Reply #7 on: August 10, 2018, 06:55:43 am »
Amazing info my dear Paul,

and do you mean in anther topic,it was called Model-837-663 ?;

https://www.secretprojects.co.uk/forum/index.php/topic,23449.msg279238.html#msg279238

Offline Orionblamblam

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Re: Boeing swing-wing fighter - TFX, FX or ?
« Reply #8 on: August 13, 2018, 07:17:46 pm »
This is the closest Boeing TFX design I could find to that shown in the original model photos. This is all I have on this.
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Offline circle-5

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Re: Boeing swing-wing fighter - TFX, FX or ?
« Reply #9 on: August 13, 2018, 09:12:45 pm »
A very different airplane.  I'm siding with the F-X (F-15) speculation camp.