Falcon-Armed F-86Ds

As early as November 1950, North American Aviation (NAA) had proposed its “Advanced F-86D Transonic Interceptor” to USAF Air Materiel Command. Among its features, the Advanced F-86D would incorporate a low-mounted horizontal tailplane; a 45-degree swept wing, ‘Coke bottle’ area-ruled fuselage and inboard ailerons. Powerplants ranged from the ‘ultimate J47’ to Pratt & Whitney’s J57. Armament was to be a combination of up to 60, 2.75-inch FFAR rockets (and no other armament) or four MX-904 missiles and 36 FFAR rockets. The proposed aircraft would, according to NAA’s proposal, complete its first flight in early 1952 and be ready for service the following year.

It is likely that a routine line of communication was established between the AMC and its contractor for discussion of this topic, though no budget appears to have been put in place for further development under Air Force funding at that time.

Then in March 1952, NAA submitted a further study to AMC, which it continued to refine until August of that year when a less radical proposal for “MX-904 Falcon Missile and 2.75” FFAR Rocket Installation in F-86D Airplane” was proffered. This proposal was for a new-production version of the F-86D with four Falcon missiles replacing the internal Mighty Mouse complement of the standard F-86D and up to 24 of the unguided rockets now in wing packages or various other combinations. An extended ‘wet’ wing leading edge was also proposed, which would carry fuel and offset deletion of external drop tanks. A Hughes E-9A fire control system was a key component of the new F-86D proposal.

NAA proposed the conversion of two existing F-86Ds to test the Falcon installation, though modification of existing F-86Ds for the full (service use) configuration was deemed to be too complex to be worthwhile when ranged against new-build machines. North American suggested that if accepted, the revised configuration could be introduced on F-86D s/n 52-3898 (the first F-86D-45), providing agreement had been reached by 1 December 1952; a revised Engineering Change Proposal was prepared on 23 January 1953, this time proposing to introduce the configuration as a production fit from F-86D-55 s/n 53-557 so long as a contractual note had been received by 1 April 1953.

Ultimately no contract for prototype or production aircraft was set up, undoubtedly because funding was thought to be better spent on dedicated Century-series Falcon-equipped machines as well as similarly armed F-89H Scorpions in the interim.

NAA did however test the external Mighty Mouse rocket packages on s/n 52-3598 (the first F-86D-40 airframe) and the Falcons (externally) on F-86D-60 s/n 53-4061, the latter with the extended-chord wing later installed on F-86L interceptors.
 

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how would these rockets be aimed when aim-4 is semi active radar homing because the F-86 radar filled the entire front of the aircraft
 
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how would these rockets be aimed when aim-4 is semi active radar homing because the F-86 radar filled the entire front of the aircraft
The same way as an F-102 of F-89H, which had the same armament combination - (And essentially the same radar) The weapon is selected, the radar is locked on, an the computer (Electronic Analog) on the airplane continuously computes the firing point for the weapon in relation to the target, and either guides the pilot to fly to that point by radar scope symbology, or flies the airplane to that point through the autopilot. The pilot holds down the Action witch (Trigger) and when the release point is reached, the Fire Control System releases the weapon or weapons (depending on the number selected). The RADAR Falcons used the pulse radar of the launch airplane to guide, and didn't require a separate Illuminator RADAR like the Sparrows.
 
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Holy packaging headache Batman!
Both the engine intake trunk and the missiles are mounted UNDER the cockpit.
Talk about cramped quarters!
 
Wow, awesome find on the ‘Advanced F-86D Transonic Interceptor' Sabrejet!!

I'm wondering how the rocket exhaust gas ingestion into the main intake from the Aim-4’s might have effected the performance and safety of the turbojet?

Sadly the four external underwing Aim-4 Falcon arrangement seemed to have made so much sense.

Now for the era, surly NAA would have built a beautiful scaled table top model to support their proposal the the USAF!
Hopefully more drawings might come out of this.

Regards
Pioneer
 
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Bear in mind that the Falcons wouldn't have taken up much more space than the Mighty Mouse rocket pack. Also NAA was already looking into revised forward fuselage contours.
 
how would these rockets be aimed when aim-4 is semi active radar homing because the F-86 radar filled the entire front of the aircraft
The same way as an F-102 of F-89H, which had the same armament combination - (And essentially the same radar) The weapon is selected, the radar is locked on, an the computer (Electronic Analog) on the airplane continuously computes the firing point for the weapon in relation to the target, and either guides the pilot to fly to that point by radar scope symbology, or flies the airplane to that point through the autopilot. The pilot holds down the Action witch (Trigger) and when the release point is reached, the Fire Control System releases the weapon or weapons (depending on the number selected). The RADAR Falcons used the pulse radar of the launch airplane to guide, and didn't require a separate Illuminator RADAR like the Sparrows.
I think that aim-4 have IC guiding except semi active radar guiding
 
Bear in mind that the Falcons wouldn't have taken up much more space than the Mighty Mouse rocket pack. Also NAA was already looking into revised forward fuselage contours.
Not just cube, but mass as well - an F-89H with the same weapon mix, but displays for 2 seats hauled around about 900 lbs (400+ kg) of fire control system. There's a reason why the F-102 was so big.
 
Fascinating, it would've been interesting to see this implemented at least on a limited basis.

Not just cube, but mass as well - an F-89H with the same weapon mix

Talking about the F-86H is their a thread I can post an interesting video recently uploaded about the F-86H?
 
If it's the video I'm thinking of (F-86H rather than F-89H that P-STICKNEY referred to), it contains a lot of inaccuracy and misleading info, for example regarding Gun-Val etc.
 
If it's the video I'm thinking of (F-86H rather than F-89H that P-STICKNEY referred to), it contains a lot of inaccuracy and misleading info, for example regarding Gun-Val etc.

Would you elaborate please if possible? I'm just about four minutes into the video.
 

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