Message posted by Thud on May 08, 2003 at 9:08:09 PST:

I'll give ya'll a bite. It's old. But, it divulges the "intent".

"Mystery Sabreliner The MiG-21 was also flown against a T-39A Sabreliner equipped with an ATR-1 airborne radiometer (producing a distinctive `hump' atop the fuselage of the T-39A, behind the flight deck). This measured the fighter's vulnerability, or lack of it, to airborne infra-red (IR) weapons by evaluating IR emissions at various angles, speeds, power settings, and altitudes. The radiometer could be adjusted to produce data based on the performance of the principal US air-to-air missiles of the era, the AIM-4C/D Falcon and AIM-9G Sidewinder, as well as the IRSTS (infra-red search and tracking system) employed by some US interceptors such as the F-lOlB/F Voodoo. The MiG-2l-versus-T-39A engagements yielded a wealth of information about how to attack a MiG-21 with an IR weapon, but there were also moments when all did not go well. For example: "Mission No.5 was mainly unproductive because of the everworsening background conditions and the low contrail level. The aircraft were 'sandwiched' between a contrail level at 33,000ft (10,058m) and 30,000ft (9,144m)." Several data runs failed to produce useful information because the data was `influenced by other factors'." Similar IR tests were later conducted between the T-39A and the two MiG-17s. Although the USAF claims the external appearance of the IR test T-39A was never classified, one wonders why no photo of the aircraft appears to have surfaced. Both the MiG-21 and a MiG-17 subsequently flew against a T-39A (59-2871)"

This isn't the GSII, but it serves the same purpose. For a more "intense" brief, see the attached link n(it takes a while to load) that has been posted before. Maybe, if ya'll would read these posts, you would be better "informed-dd"

((grin))

Thud

In Reply to: GII & MiG? posted by robb on May 07, 2003 at 14:27:05 PST:

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