Mikoyan-Gurevich I-211 / Ye
After completion by the TsAGI of full-scale wind tunnel testing of the I-210 / IKh, the OKB redesigned the junction between the engine cowling and the fuselage. It moved the pilot's cockpit aft, enlarged the vertical tail surfaces, redesigned the engine cowling and repositioned the oil cooler intakes in the wing roots. The undercarriage was redesigned, power was provided by a Shvetsov M-82F radial engine of 1700hp and armament was restricted to a pair of wing-mounted 20mm ShVAK cannon. Only the outer wing panels of the MiG-3 remained and slots were applied to these.
This thoroughgoing redesign of the I-210 was referred to as the I-211, or Ye, a pre-series batch of 10 aircraft being laid down of which the first flew in August 1942. Factory testing was completed within one month, the results being highly successful, but no manufacturing capacity was available for production, and all aerodynamic data and information on the slots were passed to the Lavochkin OKB as a result of a ministerial request.
Engine: Shvetsov M-82F radial, 1700hp
Max take-off weight: 3100 kg / 6834 lb
Empty weight: 2528 kg / 5573 lb
Wingspan: 10.20 m / 33 ft 6 in
Length: 7.95 m / 26 ft 1 in
Height: 3.63 m / 11 ft 11 in
Wing area: 17.44 sq.m / 187.72 sq ft
Max. speed: 670 km/h / 416 mph
Range: 1140 km / 708 miles
Armament: 2 x 20mm ShVAK cannon