During 1957, the Sukhoi OKB began construction of the prototype of a new tailed-delta interceptor, the two-seat P-1 (the prefix letter indicating Perekhvatchik, or interceptor) intended to meet a requirement for a fighter equipped with collision-course radar and carrying a mixed armament of guided and unguided missiles plus cannon. Flown in 1958, the P-1 had a 57° delta wing with dog-tooth leading edges and lateral air intakes with translating centrebodies. Power was provided by an unspecified turbojet with a maximum afterburning thrust of 10600kg and armament included a battery of 50 unguided spin-stabilised 57mm rocket missiles, provision being made for a single 37mm cannon and guided missiles on underwing pylons. Poor engine reliability and serious delay in development of the intended X-band radar led to discontinuation of development of the P-1 at a comparatively early stage in flight test.
| MODEL||P-1 (estimated)|
| Take-off weight||17010 kg||37501 lb|
| Wingspan||9.50 m||31 ft 2 in|
| Length||21.30 m||70 ft 11 in|
| Max. speed||2050 km/h||1274 mph|
| Ceiling||19500 m||64000 ft|
| Range||2000 km||1243 miles|
|A three-view drawing (1678 x 955)|
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