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Tupolev Tu-12 (Tu-77)


Experimental Jet-Powered Medium Bomber (1947)


Aviation / Aerospace

The World War 2-era Tu-2 bomber was the basis for the jet-powered Tu-12 bomber project by Tupolev in the immediate post-war years.



Authored By: Staff Writer | Last Edited: 10/22/2018 | Content ©www.MilitaryFactory.com | The following text is exclusive to this site.
By the close of World War 2 (1939-1945), it became a certainty to the victorious powers that the jet age had arrived. All sides undertook various experiments and developments related to military aircraft - especially Britain, the United States and the Soviet Union. The prospect of a jet-powered bomber was first realized with the German Luftwaffe Arado Ar 234 "Blitz" (detailed elsewhere on this site) which graced the skies in limited numbers towards the end of the war - while it did not impact the war as a whole, it provided glimpse into a future battlefield.

Sensing this "change in the wind", the Soviets pushed onward in getting jet-powered types into the skies as quickly as possible and the jet age arms race with the West was officially on. The classic Tupolev Tu-2 ("Bat") twin-engined, piston-powered medium bomber was selected for modification into a jet-powered form that would help up-and-coming pilots and associated bomber crews learn the nuances of jet-powered flight concerning larger-than-fighter, multi-engined platforms. This aircraft would more or less become a "trainer" and feed pilots into the new Soviet Air Force bomber system that was soon to involve several competing jet-powered bomber designs (the Ilyushin Il-28 "Beagle" being one product of the period).

The British Rolls-Royce "Nene" turbojet engine of World War 2 fame found its way into Soviet hands by import and this engine was used to hasten development of many Soviet aircraft projects. Andrei Tupelov, having survived Stalin's "Great Purge" of World War 2, headed the program as he did many of Tupolev's classic period designs. A Tu-2S production model was the specimen in focus and Zavod Factory No.23 was where the work took place beginning in May of 1947.

In the revised bomber form (designated developmentally as "Tu-77"), the air-cooled radial engines were, of course, replaced by 2 x Rolls-Royce Nene I series turbojet engines of 5,000lb thrust each (this same engine was re-engineered by the Soviets to produce the unlicensed Klimov RD-45 series powerplant in time). The structure, particularly the wing surfaces, were all strengthened to better counteract the violent forces at play in high-speed flight. Instead of the "tail-dragger" undercarriage used in the traditional Tu-2 arrangement, a more modern tricycle system was installed. The fuselage was reworked dimensionally with some 16 inches added to the length.

Instead of the two fixed, forward-firing 20mm ShVAK autocannons found in the wing roots of the Tu-2, the new aircraft carried a single, starboard side-mounted 23mm Nudelman-Suranov NS-23 autocannon and standard armament. This was supplemented by 2 x 12.7mm Berezin UBT machine guns and a bomb load of up to 6,615lb.

Work continued into the summer of 1947 when a first-flight was recorded on July 27th. The following month, two additional airframes were revealed at Aviation Day (Tishino) and state trials were had from October into the early part of 1948. This period ultimately showcased some inherent deficiencies when attempting to convert an established piston-powered aircraft to a jet-powered one: the original electrical system was not up to the task and the powerful 23mm autocannon, when fired, caused damage to more sensitive components of the aircraft. Fuel burn for the thirsty jets was also a noted concern but, for all this, the Tu-12 gained in performance over its original from - increased to speed, rate-of-climb and service ceiling were well noted and the aircraft proved useful in establishing all-new defensive armament doctrine for future Soviet bombers.

As completed, the Tu-12 featured an operating crew of five. Structurally it was given an overall length of 54 feet with a wingspan of 62 feet and carried an empty weight reached 20,000lb against a gross weight of 35,000lb. Performance-wise, the Tu-12 clocked a maximum speed of nearly 490 miles-per-hour and could range out to 1,370 miles with a service ceiling reaching 37,305 feet.

Including the prototype, six total aircraft were used to complete the Tu-12 jet bomber project. These examples were used in crew training as designed but were also influential in other testing work done. Beyond this, the short-lived series was ultimately abandoned in pursuit of more advanced programs that would additionally help to establish the Soviet bomber force as one to be reckoned with heading into the 1950s, 1960s, and 1970s.

Specifications



Service Year
1947

Origin
Soviet Union national flag graphic
Soviet Union

Status
RETIRED
Not in Service.
Crew
5

Production
6
UNITS


Tupolev OKB - Soviet Union
National flag of the Soviet Union Soviet Union (retired)
(OPERATORS list includes past, present, and future operators when applicable)
Ground Attack (Bombing, Strafing)
Ability to conduct aerial bombing of ground targets by way of (but not limited to) guns, bombs, missiles, rockets, and the like.
X-Plane (Developmental, Prototype, Technology Demonstrator)
Aircraft developed for the role of prototyping, technology demonstration, or research / data collection.
Training (General)
Developed ability to be used as a dedicated trainer for student pilots (typically under the supervision of an instructor).
- Training (Advanced)
Dedicated advanced training platform for student pilots having graduated from basic flight training.


Length
54.0 ft
(16.45 m)
Width/Span
61.8 ft
(18.85 m)
Height
13.6 ft
(4.15 m)
Empty Wgt
19,842 lb
(9,000 kg)
MTOW
34,723 lb
(15,750 kg)
Wgt Diff
+14,881 lb
(+6,750 kg)
(Showcased structural values pertain to the Tupolev Tu-12 production variant)
Installed: 2 x Rolls-Royce Nene I turbojet engines developing 5,000lb of thrust each.
Max Speed
301 mph
(485 kph | 262 kts)
Ceiling
37,402 ft
(11,400 m | 7 mi)
Range
1,367 mi
(2,200 km | 4,074 nm)


♦ MACH Regime (Sonic)
Sub
Trans
Super
Hyper
HiHyper
ReEntry
RANGES (MPH) Subsonic: <614mph | Transonic: 614-921 | Supersonic: 921-3836 | Hypersonic: 3836-7673 | Hi-Hypersonic: 7673-19180 | Reentry: >19030


(Showcased performance specifications pertain to the Tupolev Tu-12 production variant. Compare this aircraft entry against any other in our database. View aircraft by powerplant type)
STANDARD:
1 x 23mm NS-23 autocannon.
2 x 12.7mm Berezin UBT machine guns.

OPTIONAL:
Up to 6,615lb of conventional drop ordnance.


Supported Types


Graphical image of an aircraft medium machine gun
Graphical image of an aircraft heavy machine gun
Graphical image of an aircraft automatic cannon
Graphical image of an aircraft conventional drop bomb munition


(Not all ordnance types may be represented in the showcase above)
Hardpoint Mountings: 4


Tu-12 - Base Series Designation; five examples built along with a single prototype.
Tu-77 - Developmental designation.


General Assessment
Firepower  
Performance  
Survivability  
Versatility  
Impact  


Values are derrived from a variety of categories related to the design, overall function, and historical influence of this aircraft in aviation history.
Overall Rating
The overall rating takes into account over 60 individual factors related to this aircraft entry.
60
Rating is out of a possible 100 points.
Relative Maximum Speed
Hi: 400mph
Lo: 200mph
This entry's maximum listed speed (301mph).

Graph average of 300 miles-per-hour.
City-to-City Ranges
NYC
 
  LON
LON
 
  PAR
PAR
 
  BER
BER
 
  MOS
MOS
 
  TOK
TOK
 
  SYD
SYD
 
  LAX
LAX
 
  NYC
Tupolev Tu-12 operational range when compared to distances between major cities (in KM).
Max Altitude Visualization
Small airplane graphic
Design Balance
The 3 qualities we look at for a balanced aircraft design are altitude, speed, and range.
Aviation Era Span
Pie graph section
Showcasing era cross-over of this aircraft design.
Unit Production (6)
6
36183
44000
This entry's total production compared against the most-produced military and civilian aircraft types in history (Ilyushin IL-2 and Cessna 172, respectively).
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