IMiG-19PIM / SIW-7/IW MIG-19PMU / SIVI7/2IVI

The K-5 air-to-air missile was developed and mass-produced in the mid-1950s, and the Mikoyan ОКБ was ordered to design a version of the MiG-19 armed solely with these guided missiles. On January 1956 A. I. Mikoyan confirmed that the OKB was working on the preliminary design for the MiG-19PM armed with four K-5M missiles (M = Modem- izinrovanmkh: modernized). Once certified, the K-5M received the mil­itary designation of RS-2US. The future MiG-19PM was assigned the factory code SM-7/M.

The K-5M missiles were guided toward the target through a zone of equi-signals transmitted by the antenna of the RP-2U Izumrud-2 airborne radar. Due to the radar installation in the nose of the air­craft, the forward section of the fuselage had to be modified. The SM – 7/M wing was identical to that of the MiG-19P except for the addition of the K-5M pylons and the removal of the wing cannons. The tailplane was also the same as that of the SM-7/1 and therefore had an elevator. The hydraulic system was identical as well. The SM-7/M was powered by two AM-9B (RD-9B) reheated turbojets that each gen­erated 3,185 daN (3,250 kg st) of thrust. Its navigational instruments matched those of the MiG-19P with the exception of the DGMK-3 gyrocompass heading repeater, which was replaced by the GKI-1 earth inductor gyrocompass.

For the first time, the aircraft was fitted with an emergency right – left switchover from one wing tip probe to the other. The Izumrud-2 radar, an upgraded version of the RP-1, was linked with the ASP-5N sight for firing the K-5M missiles. This radar unit could spot a target ahead, plot its path in relation to the fighter’s position (heading and dis­tance) while it was still out of sight, bring the fighter toward the target to a suitable distance, and transmit coded pulses (together with the IFF interrogator) to establish the target’s identity. It could detect targets in the forward sector at bearing angles of plus or minus 60 degrees and at elevation angles between plus-26 degrees and minus-14 degrees in rela­tion to the aircraft’s longitudinal axis. It was also capable of offering the pilot a choice of attack paths on the radar scope placed in the aircraft cockpit. Once the fighter had closed to within 3,500-4,000 m (11,480-13,120 feet) the Izumrud-2 automatically fed the ASP-5N sight the target’s distance, bearing, and elevation coordinates, whatever the visibility conditions.

APU-4 launch rails were fastened to the wing pylons so as to fire either K-5M missiles or ARS-160 and ARS-212M unguided rockets. The missiles were electrically triggered by fire buttons located on the con­trol column through a PUVS-52 active-inert control panel

The SM-7/M made its debut in January 1957 with G. A. Sedov at the controls. After being certified, it was mass-produced with the mili­tary designation of MiG-19PM Shortly thereafter the SM-7/2M was brought out for tests. It differed from the first prototype only in its slab tailplane. Most of the state trials and acceptance flights were made by S. A. Mikoyan, a military pilot The SM-7/2M was flight-tested with K – 5M missiles from 14 to 23 October 1957. It was certified and mass-pro­duced as well under the military designation MiG-19PMU

Specifications

Span, 9 m (29 ft 6.3 in); fuselage length, 10 48 m (34 ft 4 6 in); height, 4 02 m (13 ft 2 3 in); wing area, 25 m2 (269 sq ft); takeoff weight, 7,730 kg (17,040 lb); takeoff weight with two 400-1 (106-US gal) drop tanks, 8,464 kg (18,655 lb); wing loading, 309,2-338 6 kg/m2 (63.4-69.4 lb/sq ft).

Performance

Max speed, 1,250 km/h at 10,000 m (675 kt at 32,800 ft); 1,130 km/h at

15.0 m (610 kt at 49,200 ft); without reheat, 1,100 km/h at 5,000 m (594 kt at 16,400 ft); 965 km/h at 14 000 m (520 kt at 45,900 ft), climb to 5,000 m (16,400 ft) with reheat in 4.8 min, climb to 5,000 m (16,400 ft) with dry thrust in 7.2 min; service ceiling with reheat, 16,700 m (54,800 ft), service ceiling with dry thrust, 15,000 m (49,200 ft); range,

1.0 km at 10,000 m (620 mi at 32,800 ft); with two 400-1 (106-US gal) drop tanks, 1,415 km (880 mi).