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The Sukhoi T-4, or "Aircraft 100", or "Project 100", or "Sotka" was a Soviet high-speed reconnaissance, anti-ship and strategic bomber aircraft that did not proceed beyond the prototype stage. It is sometimes called the Su-100.[1]

T-4
Sukhoi Т-4 at Central Air Force Museum
Role	Bomber/Reconnaissance Type of aircraft
Manufacturer	Sukhoi
First flight	22 August 1972
Status	project cancelled
Primary user	Soviet Air Force
Number built	4 (only 1 passed test flights)

Design and development

In 1963, the Soviet government held a request for proposal among the aircraft design bureaus, with the aim of developing an aircraft analogous to the North American XB-70 Valkyrie. The Sukhoi design, with its high cruise speed of 4,200 km/h (2,600 mph) was favored over the designs submitted by Yakovlev and Tupolev and after a preliminary design review in June 1964, the building of a prototype was authorized. Development of the T-4 required massive research efforts to develop the technologies necessary, including the manufacturing technologies to machine and weld the materials necessary to withstand sustained Mach 3 flight. Nearly 600 patents or inventions are attributed to the program.[2] The first flying prototype was finally completed in the autumn of 1971. Work continued on an additional three airframes (one for static testing) through 1975. In 1974, the Ministry of Aviation Industry ordered work suspended on the T-4 project, which was officially scrapped on 19 December 1975.

The aircraft's droop nose lowered to provide visibility during takeoff and landing. A periscope was used for forward viewing when the nose was retracted, and could be employed at speeds of up to 600 km/h (370 mph). Drogue parachutes were used in addition to conventional wheel brakes.[1]

Operational history

The first T-4, designated "101", first flew on 22 August 1972. The test pilot was Vladimir Ilyushin, son of famed aircraft designer Sergei Ilyushin, and navigator Nikolai Alfyorov. Testing continued to 19 January 1974. The T-4 flew only ten times for a total of 10 hours and 20 minutes.^{[citation needed]}.

Aircraft on display

One T-4 survives. Aircraft "101" is on display at the Central Air Force Museum in Monino near Moscow. The serial numbers of the prototypes were "101" to "106". Only "101" and "102" were built, while other additional prototypes "103" and "104" were under construction, and "105" and "106" only existed on draft charts.^{[citation needed]} Only the "101" completed all the test flights and flew the last test flight before the project was canceled on 22 January 1974. The rest of the prototypes were scrapped.

Specifications

Data from ^{[citation needed]}

General characteristics

• Crew: 2
• Length: 44 m (144 ft 4 in)
• Wingspan: 22 m (72 ft 2 in)
• Height: 11.2 m (36 ft 9 in)
• Wing area: 295.7 m² (3,183 sq ft)
• Empty weight: 55,600 kg (122,577 lb)
• Gross weight: 114,000 kg (251,327 lb)
• Max takeoff weight: 135,000 kg (297,624 lb)
• Powerplant: 4 × Kolesov RD-36-41 afterburning turbojet engines, 157 kN (35,000 lbf) with afterburner

Performance

• Maximum speed: 3,200 km/h (2,000 mph, 1,700 kn)
• Maximum speed: Mach 3 claimed, 1.3 actual
• Cruise speed: 3,000 km/h (1,900 mph, 1,600 kn) / M2.8
• Ferry range: 7,000 km (4,300 mi, 3,800 nmi)
• Service ceiling: 20,000–24,000 m (66,000–79,000 ft)

Gallery

• 
  T-4

See also

Aircraft of comparable role, configuration, and era

• Avro 730
• North American XB-70 Valkyrie

Related lists

• List of bomber aircraft
• List of military aircraft of the Soviet Union and the CIS

References

External links

• Sukhoi T-4 "Sotka" at the Russian Air Force Museum Archived 2017-04-05 at the Wayback Machine
• Sukhoi Company website

На других языках

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[de] Suchoi T-4

Die Suchoi T-4 Sotka (russisch Сухой Т-4 Сотка, deutsch Hunderter) war ein sowjetisches Projekt eines überschallschnellen Langstreckenbombers aus der Zeit des Kalten Krieges. Die offizielle Typenbezeichnung ist T-4, gelegentlich wird sie auch fälschlicherweise als Su-100 bezeichnet.

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- [en] Sukhoi T-4

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[fr] Soukhoï T-4

Le Soukhoï T-4 (en russe : Сухой T-4), ou « Article 100 » (en russe : изделие 100), ou « Sotka » (en russe : сотка) était un projet soviétique d'avion à haute vitesse, de reconnaissance, de lutte anti-navire et de bombardement stratégique qui n'a pas dépassé l'état de prototype. Il est aussi appelé quelquefois Su-100, abréviation qui désigne aussi le char d’assaut soviétique SU-100 de la Seconde Guerre mondiale.

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[it] Sukhoi T-4

Il Sukhoi T-4 (in cirillico: Сухой T-4), anche noto col nome di Sotka o Progetto 100, è stato un bombardiere strategico supersonico sperimentale di fabbricazione sovietica, sviluppato dalla Sukhoi negli anni sessanta per conto delle forze armate sovietiche al fine di dotarsi di un velivolo omologo dell'XB-70 Valkyrie statunitense all'epoca in fase di sviluppo.

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[ru] Т-4 (самолёт)

Т-4 («изделие 100», или «сотка») — ударно-разведывательный бомбардировщик-ракетоносец ОКБ Сухого (на Западе он считается советским аналогом более раннего американского бомбардировщика-ракетоносца XB-70 «Валькирия» и называется соответственно «Русская Валькирия»).[3] Т-4 предназначался для уничтожения авианосных ударных групп противника и ведения стратегической разведки.

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