P-42 Streak Flanker prototype (T-10) – record breaker

P-42 record breaker

P-42_Flanker

A stripped version of the Su-27, without armament or electronics, used to set time-to-height records.
Accordingly, one of the T-10S prototypes was stripped of all armament, radar and operational equipment, the fin tips were removed, as was the tail boom and the wingtip launch rails. Even the radome was replaced by a lighter metal fairing. Stripped of paint, the aircraft was polished and all drag-producing gaps and joints were sealed. The engines were modified to give an increase in thrust of 2,204lbs – giving the P-42, as the modified aircraft was designated, a phenomenal thrust-to-weight ratio of almost 2:1.

081The main wheel brakes could not hold the aircraft at full thrust so the P-42 was anchored to a tracked armoured vehicle by a steel hawser with an electronic lock. With the engines wound up to full power, the hawser was released and the P-42 leaped into the air and climbed at an optimum angle to altitude.

 

day01_01

 

Between 1986 and 1988 the P-42, piloted variously by Victor Pugachev, Nikolai Sadovnikov, Oleg Tsoi and Yevgeni Frolov, took no less than 27 records from the Streak Eagle, including time-to-height records for 3000, 6000, 9000, 12000 and 15000 meters, a height record of 19335m (63435 ft) and time-to-height records with various payloads. The aircraft even set records for STOL aircraft with a take-off run of less than 1540ft ! Most of these records still stand to this day.

 

 

Sub-class C-1h (Take-off weight 12000 to less than 16000 kg)
Group 3 (Jet engines)

Type of record Performance Pilot Date
Time to climb to a height of 3000 m 25s Victor G. PUGACHEV 27/10/1986
Time to climb to a height of 6000 m 37s Victor G. PUGACHEV 15/11/1986
Time to climb to a height of 9000 m 44s Nikolai SADOVNIKOV 10/03/1987
Time to climb to a height of 12000 m 55s Nikolai SADOVNIKOV 10/03/1987
Time to climb to 3000 m with 1000 kg payload 28s Oleg TSOY 17/05/1988
Time to climb to 6000 m with 1000 kg payload 38s Oleg TSOY 19/04/1988
Time to climb to 9000 m with 1000 kg payload 48s Oleg TSOY 17/05/1988
Time to climb to 12000 m with 1000 kg payload 59s Oleg TSOY 17/05/1988

Sub-class C-1i (Take-off weight 16000 to less than 20000 kg)
Group 3 (Jet engines)

Type of record Performance Pilot Date
Altitude with 1000 kg payload 22250 m Victor G. PUGACHEV 20/05/1993
Greatest mass carried to a height of 15000 m 1015 kg Victor G. PUGACHEV 20/05/1993
Time to climb to 15000 m with 1000 kg payload 2mn 6s Victor G. PUGACHEV 20/05/1993
Time to climb to a height of 15000 m 2mn 6s Victor G. PUGACHEV 20/05/1993

Class N / Group 3 : Jet engine

Type of record Performance Pilot Date of record
Altitude in horizontal flight without payload 19335 m Nikolai SADOVNIKOV 10/06/1987
Time to climb to a height of 3000 m 26s Nikolai SADOVNIKOV 11/04/1987
Time to climb to a height of 6000 m 37s E. I. FROLOV 31/03/1988
Time to climb to a height of 9000 m 47s E. I. FROLOV 31/03/1988
Time to climb to a height of 12000 m 58s Nikolai SADOVNIKOV 11/03/1987
Time to climb to a height of 15000 m 1mn 16s Nikolai SADOVNIKOV 11/03/1987
Time to climb to 3000 m with 1000 kg payload 28s Oleg TSOY 17/05/1988
Time to climb to 6000 m with 1000 kg payload 38s Oleg TSOY 19/04/1988
Time to climb to 9000 m with 1000 kg payload 48s Oleg TSOY 17/05/1988
Time to climb to 12000 m with 1000 kg payload 59s Oleg TSOY 17/05/1988

Sub-class C-1 (Unlimited take-off weight)
Group 3 (Jet engines)

Type of record Performance Pilot Date of record
Time to climb to a height of 3000 m 25.37s Victor G. PUGACHEV 27/10/1986
Time to climb to a height of 6000 m 37.05s Victor G. PUGACHEV 15/11/1986
Time to climb to a height of 9000 m 44.18s Nikolai SADOVNIKOV 10/03/1987
Time to climb to a height of 12000 m 55.54s Nikolai SADOVNIKOV 10/03/1987

The visual differences from the basic Su-27

  • Radome was replaced by a lighter metal fairing(1)
  • No avionics, most of outside elements, like IR sight(2) are removed
  • Non-adjustable engine intakes(3)
  • Reduced tail-planes(4) Reduced
  • The fin tips were removed(5)
  • Missing tail-cone(6)
  • su-27-p42-dif

Prototype of Su-27 and whole Flanker family – T-10 Flanker A

T-10 Flanker A

Everything began at Sukhoi Bureau ending 1969. SSSR (USSR) needs some air superiority fighter to catch up USA FX program F-15 which started 1966.

T-10-20 at former Khodynka airbase

T-10-20 at former Khodynka airbase (click on photo to enlarge)

Prototype of the Su-27, factory code T-10 was finished September 1971. After concept was presented, Soviet Air Force heads decided to go parallel with two designs. One by Mikoyan lighter version (now well known Mig-29 Fulcrum), and heavier by Sukhoi.

Sukhoi-T-10

Development of the Su-27 was approved by Soviet government in 1976., so Sukhoi started to build first three T-10 prototypes (two for flight testing and one for structural testing). The first two flying prototypes of the Su-27 were fitted with AL-21FZAI engines.

Construction of the first prototype T10-1 was completed in April 1977. On 20 May 1977, the design bureau’s chief pilot V.S. Ilyushin performed the first flight. In May 1978, the testing programme was expanded to cover a second prototype, T10-2, and the year after that, in 1979, it received the prototypes T10-3 and T10-4, fitted with operational engines AL-31F. This was the first “unstable” fly-by-wire aircraft in the Soviet Union.

1st T-10 / Monino museum

1st T-10 / Monino museum (click on photo to enlarge)

In the summer of 1977, after Sukhoi’s chief pilot, Hero of the Soviet Union Vladimir Sergeyevich Ilyushin, made the first flight in the T-10, and testing began. All went well, and 10 more aircraft were begun.

t-10

T-10-1 (click on photo to enlarge)

The second prototype T-10-2 was built in 1978, but it was destroyed on its second flight and the pilot was killed. The cause was shortcomings in the control system.

The same year Sukhoi built a third and a fourth prototype T-10-3 and T-10-4. They received new AL-31F engines, but the stability problems continued. Five new prototypes were built for expanded test flight program T-10-5, -6, -9, -10, -11. The seventh and the eight versions were kept on the drawing board waiting for possible changes. During the next four years the Su-27 underwent extensive redesign program under Mikhail Simonov’s supervision, which resulted in the T-10S, developed from the T-10-7.

P-42 record breaker

P-42 record breaker (click on photo to enlarge)

The T-10S was lost in an accident on September 3, 1981. The second T-10S came from the production line with designation T-10-12 and with new airframe structure. That prototype was lost too, on December 23, 1981. The plane broke down in a high-speed test and the pilot was killed. The T-10-8 prototype was assembled in 1982 to be used in strength tests. Thus the total number of aircraft in the test program rose to 14.

The T-10S prototype evolved into the production version Su-27P during the year 1985, when it was introduced to service. Sukhoi manufactured about 200 such planes for the Air Defense Force.

images

The aircraft has been equipped with two AL-31F engines, with thrust of 12,500 kp with afterburner and 7,600 kp with the basic engine. The normal take-off weight is 22,000 kg.T-10-1_04

The radar is coherent RLPK27pulse-doppler radar, which is able to track 10 targets and engage 2 targets simultaneously. Geophysica NPO optical-electronic system supplements the radar. The system’s laser rangefinder has 8 km range and the IR finder’s detection range extends to as far as 50 km, depending on the IR contrast. The electro-optical system can be connected to the pilot’s helmet sight.

9ib61g

Prototype of Su-27K (KUB) or lets say Su-33

 

As compared to the MiG-29, the benefits of the Su-27 in terms of operation range and useful load were evident. Thus the FrontalAviation soon directed its interest to the new aircraft and had ordered about 150 examples by the beginning of the 1990s.

12