Vought F-8 Projects

Pioneer

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Excuse my ignorance, but did the Supercritical wing F-8 go supersonic or was it transonic?

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Bill S

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In a 1957 report, Vought engineers presented the problem as they saw it. "An urgent need, therefore exists for establishing a pilot environment escape and survival system compatible with the high performance ranges expected in the next era of manned flight. The performance rang to be considered requires speeds up to Mach 4.0, altitudes from sea level to 120,000 feet." In went on to state "...the pilot will be completely unburdened of such items as oxygen mask, survival gear, parachutes, "Mae Wests," exposure suits, associated fittings, tubing and couplings." ".... the full pressure suit and its attendance cumbersome, restrictive, sweat suit and claustrophobic effects will be eliminated." Attached are two illustrations I have not seen in this discussion. A general arrangement and the initiation sequence. Until I read the initiation sequence, I was unaware of an automatic function.

The testing would include:
1. Airdrops of the capsule from C-119 cargo aircraft
2. Three modified F8U-1 aircraft
3. Two of the three would be F8U-1KD drone configuration modified with the new canopy and non-eject able seat.
4. The first drone would be expended with an anthropomorphic dummy installed for the test
5. The second drone would be expended with a live chimpanzee
6. The third modified aircraft (F8U-1) would be expended with a live human occupant, only after all the other tests are successful!

bill
 

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Archibald

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The Twosader was such a beauty. Shame some dumb bean counter canned all of them, with a single stroke of a pen...
 

Hjalli

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So there were two proposals for a J-79 crusader (IF-8 / V-1000) ???

The Crusader is well known for its brilliant performances over Vietnam. At a time, it was the only valuable fighter in the american arsenal (the Phantom has its difficulties, the F-104 was a turkey. what else ?)

Now, this was achieved with the old and heavy J-57 engine...

I compared the J-57 with the J-79 some weeks ago (on the whatif forum ;)) .
Just wanted to say that the J-57 was 2300 kg and 6.20 m long. Diameter in 1.15m
On the other hand, the J-79 was only 1600 kg and...5 m long. Diameter = 1.05 m !

For a roughly equal thrust(7800 kgp or so). Can you imagine the benefits of changing a J-57 for a J-79 ? :eek:

This plane would have been ideal for the Essex carriers, which were too small for Phantoms (I mean, J-79 powered variants. Americanised spey Phantoms were proposed for use on... small carriers. See what I mean ? ;) )

I red that in Vietnam air protection of smaller carrier was assumed by Skyhawks with AIM-9 ???

I thought, too that the V-1000 was a proposal from the late 50's. Hmmm there's a cool alternate world to imagine, in which Vought sell the Crusader III to USAF, the
IF-8 and V-1000 are produced until 1972 for USN and Foreign customers (including navies of countries such as Brazil, France, GB...).
 

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Bill S

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The V-456 Attack Crusader. Vought proposed this as "a versatile, high performance attack airplane" It was a result of Vought's internal limited war studies and the prospective VAX requirements. The vision was an aircraft that could be delivered to the fleet faster and cheaper. The base line aircraft was the F8U-2NE with a new wing capable of a wider variety of ordnance than carried by the F8U series. The attachments are photos of microfilm done with early generation equipment, so apologies for the quality.
 

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yasotay

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The V-456 Attack Crusader. Vought proposed this as "a versatile, high performance attack airplane" It was a result of Vought's internal limited war studies and the prospective VAX requirements. The vision was an aircraft that could be delivered to the fleet faster and cheaper. The base line aircraft was the F8U-2NE with a new wing capable of a wider variety of ordnance than carried by the F8U series. The attachments are photos of microfilm done with early generation equipment, so apologies for the quality.
That seems almost as wrong as a "Bombcat".

But once you get past the emotion of it, I suspect it would have done well in the role given its superb handling qualities.
 

Temistocle

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Triggered by another thread, I found on this NASA link:

F-8 Digital Fly-By-Wire (DFBW) Iron Bird simulator cockpit. It was an F-8A 'retired' by the USN. The iron bird was a faithful reproduction of the F-8 DFBW aircraft (a "C" model). This cockpit tied to 6-degree-of-freedom digital simulation. The airframe had power actuators and FBW triplex secondary actuators that moved the power actuator valve.
Electrical power and hydraulics were from ground sources, and fed into the same locations as the engine-driven sources in the airplane.
The side stick was installed to allow the YF-16 Test Pilot (Phil Ostreicher) to evaluate a side stick FBW system prior to his first flight in the YF-16. It was connected only to the triplex analog system. Wilt Lock led the integration of this side stick with the Sperry analog FBW system.
The unique F-8 DFBW mode control panel:
CBS: Computer Bypass System
DIR: Direct (no feedback)
SAS: Stability Augmentation System -- basically pitch, roll, and (washed out) yaw rate feedback
CAS: Command Augmentation System close to C-Star (C*) system developed by Boeing.
MLC: Correct! Maneuver Load Control to move load inboard to attempt to reduce wing root bending in elevated g flight. Did not work as well as "hoped-for." Reason: the pitching moment from the flaps required pitch trim to higher AOA, increasing wing root bending, negating some of the bending load reduction from flap MLC control law.
Note the power control switches for the 3 IBM AP-101 digital computers on left.
Also note the round dials are simulator instruments 'closely' matching the faces of the flight instruments.
May 21, 1975
 

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hesham

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Hey guys, lets keep this thread about Crusader projects. If I knew how to use my apprentice moderator powers, I would send all the scooter and blue thunder????? stuff somewhere else.

Vought did a feasibility study dated November 1975 on modifying the NTF-8A Two Seat Crusader with a rotating oblique wing for NASA. Attached are some scans from a poor microfilm copy of the report.

My dear Bill S,

there are more details about it (F-8 Oblique) here;

 

Bill S

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Hey guys, lets keep this thread about Crusader projects. If I knew how to use my apprentice moderator powers, I would send all the scooter and blue thunder????? stuff somewhere else.

Vought did a feasibility study dated November 1975 on modifying the NTF-8A Two Seat Crusader with a rotating oblique wing for NASA. Attached are some scans from a poor microfilm copy of the report.

My dear Bill S,

there are more details about it (F-8 Oblique) here;

Sorry for the duplication and wrong place. Offending post deleted.
 

hesham

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Sorry for the duplication and wrong place. Offending post deleted.

That's not what I meant,please keep the post here,no problem,I wanted
to explain the more Info about it in that topic.
 

bigredlancer

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