NEW FROM ICM 1/32 I-153 Full review

The Polikarpov I-153 Chaika (Russian Чайка, "Seagull") was a late 1930s Soviet biplane fighter. Developed as an advanced version of the I-15 with a retractable undercarriage, the I-153 fought in the Soviet-Japanese combats in Mongolia and was one of the Soviets' major fighter types in the early years of the Second World War. Three I-153s are still flying.

Operational history

I-153 captured by Finnish forces after a forced landing. Photo taken in June, 1941

The I-153 first saw combat in 1939 during the Soviet-Japanese Battle of Khalkin Gol in Mongolia. The Japanese Army Air Forces' Type 97 Fighter (Nakajima Ki-27) Nate proved a formidable opponent for the I-15bis and I-16, but was more evenly matched with the I-153, which retained agility inherent to biplanes while featuring improved performance. While the overall I-153 performance was satisfactory, some significant problems were revealed. Most troublesome was the absence of a firewall between the fuel tank mounted in front of the cockpit and the pilot. Combined with strong draft coming in through the wheel wells, fuel tank fires invariably resulted in rapid engulfment of the cockpit and severe burns to the pilot. In addition, the M-62 engine suffered from a service life of only 60–80 hours due to failures of the two-speed supercharger.

The Polikarpov I-153 Chaika never flew with any Spanish Air Force units during or after the Spanish Civil War. Two earlier variants of this aircraft, the I-15 and the I-15bis, did fly with the Republican Air Force during the conflict and, later, captured examples of both types were used by the Fuerzas Aéreas till the early 1950s.

 

Operators

A Finnish Air Force Polikarpov I-153.

 China
  • Chinese Nationalist Air Force
 Finland
  • Finnish Air Force operated 21 captured aircraft, 11 of which were bought from Germany, of which 10 were actually delivered. They flew with the serial numbers IT-11 to IT-31. In Finnish service, FAF pilots claimed at least 5 kills in I-153s against the Soviets.
 Nazi Germany
  • Luftwaffe operated captured aircraft.
 Soviet Union
  • Soviet Air Force
  • Soviet Naval Aviation

Design and development 

In 1937, the Polikarpov design bureau carried out studies to improve on the performance of its I-15 and I-15bis biplane fighters without sacrificing manoeuvrability, as Soviet tactical doctrine was based on a mix of high performance monoplane fighters (met by the Polikarpov I-16) and agile biplanes. Early combat experience from the Spanish Civil War had shown that the I-16 had problems dealing with the Fiat CR.32 biplanes used by the Italian forces supporting the Nationalists, which suggested a need to continue the use of biplane fighters, and as a result, Polikarpov's proposals were accepted, and his design bureau was instructed to design a new biplane fighter. Polikarpov assigned the task to the design team led by Aleksei Ya Shcherbakov, who was assisted by Artem Mikoyan and Mikhail Gurevich (who would later set up the MiG design bureau).

The new fighter (designated I-15ter by the design bureau and I-153 by the Soviet Air Forces (VVS)) was based closely on the design of the I-15bis, with a stronger structure, but was fitted with a manually retractable undercarriage to reduce drag. It reverted to the "gulled" upper wing of the original I-15 but used the Clark YH aerofoil of the I-15bis. The four 7.62 mm PV-1 machine guns of the I-15bis were replaced by four ShKAS machine guns. While still rifle-calibre weapons, these fired much faster than the PV-1s, (1,800 rounds per minute rather than 750 rounds per minute) giving a much greater weight of fire. The new fighter was to be powered by a Shvetsov M-62 an improved derivative of the Shvetsov M-25 that powered the I-15 and I-15bis with twin superchargers.

The aircraft was of mixed metal and wood construction, with the fuselage structure being based on chromium-molybdenum steel with duralumin skinning on the forward fuselage, and fabric covering on the fuselage aft of the front of the cockpit. The aircraft's wings were made of fabric covered wood, while the tail surfaces were of fabric covered duralumin.The aircraft was fitted with a tailwheel undercarriage, with the mainwheels retracting rearwards, rotating through 90 degrees to lie flat in the wing roots, being actuated by cables operated by a pilot-driven handwheel. The solid rubber tailwheel did not retract, but moved in conjunction with the rudder.

The M-62 was not ready by the time the first prototype was complete, so it was fitted with a 750 hp (560 kW) M-25V engine when it made its maiden flight in August 1938. The first prototype failed factory testing due to numerous defects, but this did not stop production, with the aircraft entering production concurrently with ongoing testing and development. Early production I-153s powered by the M25 engine passed state testing during 1939, despite the loss of one aircraft which disintegrated in a 500 km/h (311 mph) dive. In test flights, the I-153 (M-25) achieved the top speed of 424 km/h (264 mph), service ceiling of 8,700 m (28,500 ft), and required 6 minutes 24 seconds to reach 5,000 m (16,404 ft).This performance was well in excess of that demonstrated by the I-15bis.

During 1939, production switched to a version powered by the originally planned M-62 engine, with an M-62 powered prototype undergoing state testing from 16 June 1939. While speed at sea level was virtually unchanged, the new engine improved performance at altitude. A speed of 443 km/h (275 mph) at 4,600 m (15,100 ft) was recorded, with a service ceiling of 9,800 m (32,100 ft). This performance was disappointing, and caused the aircraft to fail the state acceptance trials, although this did not disrupt production.While it was recognised that the I-153's performance was inadequate, the over-riding requirement was to not disrupt production until more advanced fighters could enter production.

While numerous improvements were proposed, many were too radical to be implemented since the aircraft was already in production. Desperate to improve performance, Polikarpov tested two I-153 with the Shvetsov M-63 engine with 820 kW (1,100 hp). However, the results were disappointing and it was becoming painfully obvious that the biplane airframe was incapable of higher speeds.

One of the rarely mentioned characteristics of the I-153 was its poor performance in a spin. While the Polikarpov I-16 had gained notoriety for entering spins, pilots found it easy to recover from a spin. In contrast, while the I-153 was difficult to spin, once it lost control, recovery was difficult to the point where intentional spinning was forbidden for some time. A spin recovery procedure was eventually developed but, while effective, it required flawless timing and execution.

By the end of production in 1941, a total of 3,437 I-153s were built.

Specifications (I-153 (M-62))

Data from Of Chaika and Chato…Polikarpov's Fighting Biplanes"

General characteristics

  • Crew: One
  • Length: 6.17 m (20 ft 3 in)
  • Wingspan: 10.00 m (32 ft 9½ in)
  • Height: 2.80 m (9 ft 2¼ in)
  • Wing area: 22.14 m² (238.3 ft²)
  • Empty weight: 1,452 kg (3,201 lb)
  • Loaded weight: 1,960 kg (4,221 lb)
  • Max. takeoff weight: 2,110 kg (6,652 lb)
  • Powerplant: 1 × Shvetsov M-62 radial engine, 597 kW (800 hp)

Performance

  • Maximum speed: 444 km/h (243 knots, 280 mph) at 4,600 m (15,100 ft)
  • Cruise speed: 297 km/h (160 knots, 184 mph) at 2,000 m (6,600 ft)
  • Range: 470 km (254 nmi, 292 mi)
  • Service ceiling: 10,700 m (35,105 ft)
  • Rate of climb: 15 m/s (2,985 ft/min)
  • Climb to 1,000 m (3,300 ft): 0.85 min
  • Climb to 7,000 m (23,000 ft): 8.3 min

Armament

  • Guns: 4 × 7.62×54mmR ShKAS machine guns, 2,600 rounds of ammunition total

 

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