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Tupolev TB-1 (ANT-4)

Twin-Engine Heavy Bomber Aircraft

Tupolev TB-1 (ANT-4)

Twin-Engine Heavy Bomber Aircraft

OVERVIEW
SPECIFICATIONS
ARMAMENT
VARIANTS
HISTORY
MEDIA
OVERVIEW



Several hundred TB-1 heavy bombers were produced by Tupolev OKB during the inter-war period leading up to World War 2.
National Flag Graphic
ORIGIN: Soviet Union
YEAR: 1929
MANUFACTURER(S): Tupolev OKB - Soviet Union
PRODUCTION: 218
OPERATORS: Soviet Union
SPECIFICATIONS



Unless otherwise noted the presented statistics below pertain to the Tupolev TB-1 model. Common measurements, and their respective conversions, are shown when possible.
CREW: 6
LENGTH: 59.06 feet (18 meters)
WIDTH: 93.50 feet (28.5 meters)
HEIGHT: 16.73 feet (5.1 meters)
WEIGHT (EMPTY): 9,965 pounds (4,520 kilograms)
WEIGHT (MTOW): 15,013 pounds (6,810 kilograms)
ENGINE: 2 x Mikulin M-17 V12 liquid-cooled inline piston engines developing 680 horsepower each.
SPEED (MAX): 111 miles-per-hour (178 kilometers-per-hour; 96 knots)
RANGE: 621 miles (1,000 kilometers; 540 nautical miles)
CEILING: 15,846 feet (4,830 meters; 3.00 miles)
RATE-OF-CLIMB: 595 feet-per-minute (181 meters-per-minute)




ARMAMENT



VARIANTS



Series Model Variants
• TB-1 - Base Series Designation
• ANT-4 - Developmental designation
• ANT-4bis - Prototype
• TB-1P - Torpedo bomber with float undercarriage.
• G-1 - Conversion transports


HISTORY



Detailing the development and operational history of the Tupolev TB-1 (ANT-4) Twin-Engine Heavy Bomber Aircraft.  Entry last updated on 5/26/2017. Authored by Staff Writer. Content ©www.MilitaryFactory.com.
The Russian Civil War pushed the Russian Empire out of World War 1 (1914-1918) and lasted until October of 1922 to which the Soviet Empire emerged from its ruins. From the remnants of the Imperial Russian Air Service was also formed the air branch of the Soviets recognized rather simply as the "Soviet Air Force". During the middle of 1924, the service called on local ingenuity to fulfill a long-range heavy bomber need and this resulted in the Tupolev concern taking the lead on the project.

The design would be a large undertaking for the recovering nation, powered by multiple engines and requiring the attention of multiple crewmen. All-metal construction (to include Duralumin corrugated skinning influenced by Hugo Junker's earlier work) would give it a modern appearance and advanced capabilities for the period. The end result was the Tupolev TB-1 by Andrei Tupolev - known to the company as the "ANT-4".

This aircraft became the largest all-metal aircraft to be constructed in the Soviet Union up to that point when it was unveiled in 1925. The selected engine series was the British Napier "Lion" of which two would be fitted to the wings (one per wing). A low-set monoplane wing mainplane was selected and a traditional single-finned tail unit used. A stepped cockpit was fitted at front of the slab-sided fuselage. A tail-dragger undercarriage arrangement was used.

A first-flight was recorded on November 26th of that year. After successful evaluation of the system it was ordered into serial production as the "TB-1".




Internally, the bomber was crewed by six. Structurally it held a length of 59 feet with a wingspan of 94.1 feet and a height of 16.8 feet. Empty weight was 10,000lb with a Maximum Take-Off-Weight (MTOW) of 15,015lb. Production forms were powered by the M-17 V-12 liquid-cooled inline piston engine developing 680 horsepower - these were licensed-built BMW VI series V-12 engines.

Performance-wise the aircraft was able to reach speeds of 110 miles per hour and comfortably cruise at nearly 100 miles per hour. Range was out to 620 miles and its service ceiling was 15,845 feet. Rate-of-climb was 595 feet-per-minute.

For point defense, the bomber was outfitted with 6 x 7.62mm Degtyaryov (DA) Machine Guns fitted at various positions about the frame. Provision was made for up to 2,205lb of conventional drop ordnance to be carried.

After completion of two prototypes, the TB-1's arrival as an operational weapon system was slow as there proved logistical issues in obtaining the required engines (the original Napier Lions) and aluminum. Serial production, therefore, did not begin until 1929 and lasted until 1932 by which point a total of 216 aircraft would be completed (not counting the two prototypes). Most of the lot were completed with a wheeled undercarriage though some sixty-six emerged with floats to serve on water (in the TB-1P torpedo bomber role). ANT-4bis became a third prototype while the G-1 designation marked designated transport version of the bomber.

The first available example was delivered for civilian service and flew from Moscow to New York City as a newsreel initiative. The voyage took 137 total flight hours to complete but nonetheless caused a sensation. From this point forward deliveries to the Soviet Air Force commenced and it soon became the service's standardized "heavy". The aircraft went on to serve the Air Force, Soviet Naval Aviation and passenger carrier Aeroflot before it met its end.

The TB-1 also became the focus of Soviet "parasite fighter" experimentation in which the large aircraft was to serve as mothership to smaller, recoverable fighters launched from her hold. This project was known by the name of "Zveno" and involved a pair of Tupolev I-4 biplane fighters.

The TB-1 series was superseded by the more-modern TB-3, also by Tupolev, in 1932. Eight hundred eighteen of this design followed.

Many TB-1 bombers ended their days as the aforementioned G-1 transports under the direction of Aeroflot.




MEDIA









Our Data Modules allow for quick visual reference when comparing a single entry against contemporary designs. Areas covered include general ratings, speed assessments, and relative ranges based on distances between major cities.

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Relative Maximum Speed Rating
Hi: 120mph
Lo: 60mph
    This entry's maximum listed speed (111mph).

    Graph average of 90 miles-per-hour.
City-to-City Ranges
NYC
 
  LDN
LDN
 
  PAR
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  BER
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  MSK
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  TKY
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  SYD
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  LAX
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  NYC
Graph showcases the Tupolev TB-1's operational range (on internal fuel) when compared to distances between major cities.
Aviation Era
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Useful in showcasing the era cross-over of particular aircraft/aerospace designs.
Unit Production Comparison
Comm. Market HI*: 44,000 units
Military Market HI**: 36,183 units
218
218

  * Commercial Market High belongs to Cessna 172.

  ** Military Market High belongs to Ilyushin Il-2.


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