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P-42

The plane Sukhoi P-42. A photo. History. Haraktreristiki.

 

P-42 - Russian / Soviet pilot jet, which was established on the basis of Su-27 by removing much of the avionics and lightweight design, intended to establish speed records and lifting, distance and altitude, and others.

P-42 same way as the Su-27, has a good layout and integrated aerodynamic configuration: the wing is blended with the fuselage, thereby creating a single support body. On the leading edge of the wing has a sweep of 42 degree. In order to increase aerodynamic efficiency and to improve the aerodynamic characteristics of P-42 at high speeds used afloat big sweep. To reduce weight, had to abandon the mechanization of the wing. Also, the engineers decided not to use a regulated air collectors.

P-42

Unlike the Su-27, vertical tail at the P-42 dvuhkilevoe (reduced height of the keel), dismantled pylons, tail boom and ventral fins. Nose cone replaced by a lightweight metal with radiotransparent, dismantled a substantial part of the avionics, IRST and radar. With the application of these measures has been reduced to a maximum takeoff weight of 14 100 kg (official information about the weight of the empty aircraft is not).

The first publications on the establishment of world records in aviation appeared at the end of 1986, when P-42 demonstrated incredible results of climbing rate. 27 October 1986, the aircraft gained altitude 3 thousand meters for 25,4 s, and less than a month later it was possible for 37 to gain altitude of 6,9 km. Prior to this, almost 10 years, the record was listed behind the F-15 aircraft. World records by the pilot V.G. The Pugachevs were achieved at once in two categories: in the class of service aircraft and in the class of jet aircraft with a mass of 12-16 tons. Advanced in aviation issues quickly realized that under P-42, a new Su-27 fighter hides. All because the fighter in the weight of 20 did not fit into the category of aircraft weighing up to 16 thousand kg (after a time it became known that the take-off mass of P-42 was 14,1 thousand kg, which is less than empty X-Sum 2).

Guide Sukhoi for record flights decided to prepare one of the first production models of the Su-27 - model T10-15, which at that time held a full test program. The original name of the machine MP Simonov later explained as follows: "P-42 named as the Remembrance Day break in the Battle of Stalingrad, a perfect year in 1942. Then, to protect the Volga stronghold, aviation has played a key role in defeating the enemy. "

The machine was removed from the machine unnecessary for its new task, the weapons control system, opto-electronic sighting system and radar. Moreover, it was possible to reduce the area of ​​the vertical tail, shorten the tail boom, abolish the sub-crests and the brake parachute system, replace the radio-transparent radome fairing with light metal, wedge the mechanization of the wing and perform other measures aimed at reducing the take-off mass. During the preparation for the test flights, the engineers poured into the tanks a limited amount of fuel, which was sufficient only for entering the regime and landing. The measures taken made it possible to achieve a unique thrust-to-weight ratio at the launch, which met almost two units. P-42, due to this, was able to accelerate and pass the sound barrier while being in vertical climb mode.

P-42

Unfortunately, the high thrust-to-weight ratio caused a rather peculiar problem: the P-42 brakes did not hold it at the start, while the engines were being driven to afterburner. As a result, engineers made an unconventional decision: P-42, using an electronic lock and a cable, was hooked up to a caterpillar tractor that was protected from the effects of the hot gases of the aircraft engines with a massive armor plate. A powerful tractor drove onto the runway and with its weight held the plane from premature strife. At the necessary moment, the lock was unhooked, thereby freeing the path of P-42, stopwatches and movie cameras were turned on, and he made a rapid roll, setting world records.

During the preparation of the aircraft to the world records posted leading engineer Rolland G. Martirosov, who later became chief designer.

March 10 1987, the NF Gardener at the P-42 set new records for the climb: 9 and 12 44,2 km in and 55,5 respectively. P-42 next day belongs to the class aviamashin short takeoff and landing. They also set a record climb: in 25,4, 57,4, 75,7 seconds test pilots managed to climb to 3, 12 and 15 km respectively. After some time, a new class of P-42 set a world altitude record level flight - 19 335 m. A few years later it was found on the plane another fourteen world records. Diplomas were awarded to VG Pugachev, OG Choi, NF Gardeners and EI Frolov.

Another instance of the Su-27, who was preparing to set records at the end of 80-ies., The plane became T10-20. By the time he passed the test program, and acted as a constructive-technological layout T 10KTM Su-27K.

Improved for new records, the car was original: it had abolished podbalkovye ridges and endings of vertical tail, and the wing console set the endings of an ozhivalnoy form, which were used on the first T-10 machines. The engineers did everything to make the weight of the aircraft smaller and place as much fuel in the fuselage as possible. An opto-electronic sighting device, a radar station and other SUV units, missile suspension assemblies, a cannon installation were removed, the make-up valves were abolished on the lower surface of the air intakes. Was replaced by a nasal radio-transparent fairing of the RSL, which was a simple metallic cone. In the central elongated tail boom there was an enlarged fuel tank, and in the head part of the fuselage a place was found for an additional fuel supply.

P-42

As a consequence, at takeoff weight in 26,6 thousand. Kg of fuel supply on the aircraft reached 12,9 thousand. Kg (9,4 thousand. Kg for conventional Su-27). Due to the above tuning of aircraft increased the range and well prepared for the world record. But over time for many reasons, interest in the data record flight was gone, and it was transferred to the Aviation Museum, located at the Central Airport in Moscow.

P-42 characteristics:

 

  • Crew: 1 people
  • Length: 19,65 m
  • Wingspan: 14,70 m
  • Height: 5,87 m
  • Wing area: 59,02 m²

 

Weight:

  • maximum take-off: 14100 kg (26600 kg for T-10-20)
  • Weight Fuel: 12900 kg (for the T-10-20)
  • Wing loading: <239 kg / m² (<450 kg / m² T-10-20)

 

Engine

  • Engine Type: Bypass turbofan with afterburner
  • Model "P-32» (forced AL-31F)

 

Link:

  • Maximum: 2 × 7600 kg
  • afterburner: 2 × 13600 kg

 

  • Engine weight: 1530 kg
  • Flight characteristics
  • The maximum speed at height: 2500 km / h (M = 2,35)
  • Battle ceiling: 19335 m (record set in June 10 1987 years)
  • Thrust-to-weight ratio: 1,93 kg / kg

 

Sukhoi P-42. Gallery.

Sukhoi P-42-plane on the runwaySukhoi P-42-aircraft before take-offP-42-preparation for flight

P-42 - aircraft in fleetP-42 closeupP-42-enlarged version

P-42-top viewP-42-side viewP-42-in aviation in the open-air museum

P-42foto aircraftP-42-picture plane on the runwayP-42-photo

 

 

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