MiG 25PU / 39 / Ye 133 MiG 25RU / 22

This MiG-25PU was in fact the Ye-133, which set several world records between 1975 and 1978.

tors, automatic flight control system, power plant and aircraft controls, fluid cooling units, air-conditioning ducts, and the like) were updated and modified to make possible all kinds of simulated failures. After improvements to the ejection devices, the instructor could himself eject the student pilot in an emergency. The performance data of the MiG-25PU and RU did not diverge greatly from those of the basic ver­sions except for the never-exceed Mach number (Mne), lowered from 2.83 to 2.65 as a safety measure.

Ye-133 Records

Several female world records were beaten by a MiG-25PU renamed Ye-133 for this purpose and piloted by Svetlana Ye. Savitskaya.

1. 22 June 1975. Speed over a 15- to 25-km (9- to 15-mile) course at unrestricted altitude, 2,683.446 km/h f1,546.26 kt)

2. 31 August 1977. Altitude in horizontal flight, 21,909.9 m (71,864 47 feet)

3. 21 October 1977. Speed over a closed circuit of 500 km (310 miles), 2,466.31 km/h (1,331 81 kt)

4. 12 April 1978. Speed over a closed circuit of 1,000 km (621 miles), 2,333 km/h (1,259.8 kt)