SOVIET X-PLANES
Top: Sukhoi S-22I test-bed. Centre left: Sukhoi T10-3.
Photographs on the opposite page: Top and centre: Two views of the Sukhoi P-42 record aircraft.
Centre right: Sukhoi T10-24. Bottom: Sukhoi T10-20 record version at Khodynka.
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Bottom left and right: Two views of the Sukhoi Su-27UB-PS test-bed.