Maverick Longhorn

[tround]

"Longhorn" has been proposed to include a turbofan engine in a lengthened AGM-65F airframe.
This version would be 3.35 m long and could have a range of about 75 km.
Mid-course guidance would be inertial with GPS, while IIR or active MMW radar terminal seekers could be used.

 

[GTX]

Interesting.

 

[Creative]

Thanks for sharing this! I've heard of Longhorn but never seen an image of it.

 

[Grey Havoc]

Longhorn Maverick

In December 1991, came in the company Hughes project missiles AGM-65 Maverick with extended-range at 74 km (40 nm). The shot should be based on the version of the AGM-65F with the fuselage extended by about 90 cm for a total of 3.35 m. was Planning to make a version using the INFRARED homing system, the second variant was to use radar guidance.

Longhorn does not exceed the stage of the project.

 

[NMaude]

Does anyone know what model of turbojet this variant used?

 

[Abingdon]

Engines proposed for this version included the Teledyne CAE Model 320-2, Allison Model 150 and an unidentified Williams International design.

 

[NMaude]

Teledyne CAE Model 320-2

So basically a J-402 variant.

Allison Model 150

So a turbojet derivative of the Allison Model 250?

an unidentified Williams International design

Given the range of the proposed missile I suppose it was a turbojet variant of the Williams F107?

 

[lk838]

So a turbojet derivative of the Allison Model 250?

If it's related (derivative or influenced) by the Allison 250 then it's probably with the -C30 (single-stage centrifugal compressor).
According to ADA286337 p. 13 and 10.2514/6.1994-3351 (Allison 150) the Allison 150 (and 120) uses a single stage centrifugal compressor, air blast atomizing fuel injection, and an axial turbine.
The Model 120 is based on the Model 150 (according to aiaa article below) for which I cannot find info except for thrust ~450 lbf ("Insensitive Missile Propulsion Systems Advanced Propulsion for Tactical Missiles" scribd), the only articles specifically on the Allison 150 and 120 are behind a paywall, but the first page is visible:
https://arc.aiaa.org/doi/pdf/10.2514/6.1994-3352https://arc.aiaa.org/doi/pdf/10.2514/6.1994-3351
Specifications for Allison 120 (image taken from ADA286337 p. 15)
Length: 440.4 mm
Diameter: 203.2 mm
Weight: 7.3 kg
Thrust: 1.22 kN at 78,000 rpm
SFC: 0.1224 kg/N.h
Airflow mass: 1.55 kg/s
Exhaust gas temperature: 1250 K (that seems really high, SX turbine blades? or is TIT instead of EGT?)