×
Aircraft / Aviation Vehicles & Artillery Infantry Arms Warships & Submarines Military Pay Scale Global Military Ranks
HOME
AVIATION / AEROSPACE
MODERN AIR FORCES
COUNTRIES
MANUFACTURERS
COMPARE
BY CONFLICT
BY TYPE
BY DECADE
WORLD WAR 2
X-PLANE

Sukhoi Su-1 / Su-3


High-Altitude Fighter Aircraft Prototype


Aviation / Aerospace

1 / 2
Image from the Public Domain.
2 / 2
Image from the Public Domain.

The Sukhoi Su-1 and Su-3 were a pair of one-off prototypes being developed during the early stages of World War 2, neither type seeing adoption by the Soviet Air Force.



Authored By: Staff Writer | Last Edited: 1/21/2019 | Content ©www.MilitaryFactory.com
The Su-1 (and related Su-3) fighter aircraft were short-lived prototype developments of the Soviet Sukhoi concern - essentially the beginning of the firm's long-running history of fine aircraft that has since culminated with the excellent Su-27 Flanker air superiority fighter and its many derivatives. The Soviet Air Force commissioned for a high-altitude interceptor/fighter in 1939 to which the Sukhoi OKB-51 (founded in 1939) was given the charge. The type would be of an all-modern metal-winged monoplane design featuring a well-streamlined fuselage and three-bladed propeller set to the front. The aircarft was christened the prototype designation of "I-300" and also came to be known as the "Su-1".

The Su-1's arrangement was highly conventional was World War 2 fighter aircraft go. The engine was set forward in a compartment ahead of the single-seat cockpit. The nose section of the craft was streamlined from the tapered propeller hub rearwards. The monoplane wing structure, covered over in metal skin, was low-set with slight dihedral and were straight in their general shape. The empennage was traditional, sporting a single curved vertical tail fin and applicable low-set horizontal planes. The pilot sat under a framed cockpit at amidships with generally adequate views around him, though views during ground running was restricted due to the aircraft's long nose section and wing area. The undercarriage consisted of two single-wheeled main landing gear legs that retracted under each wing root. A single-wheeled tail wheel was affixed under the tail section for support. Overall construction of the fuselage was of wood despite the metal wings - a sure sign of the changing times (all-metal planes were soon to become the norm in World War 2). Design of the Su-1 is attributed to Mr. Sukhoi himself - Pavel Sukhoi

Power was derived from a single Klimov M-105P liquid-cooled twin-turbocharged V12 inline piston engine delivering upwards of 1,100 horsepower to the three bladed rotor. This provided the airframe a maximum listed speed of 400 miles per hour (at 32,800 feet) with an operational range of 445 miles. While the cockpit was unpressurized (requiring a pilot's oxygen supply), the aircraft could reach ceilings of 41,000 feet with a rate-of-climb nearing 3,124 feet per second.

One of the more interesting qualities of the Klimov engine configuration were its dual Tk-2 series turbochargers intended to supply the mount with its required performance specifications. The turbochargers were fed by the direct exhaust of the powerplant itself and provided for additional power beyond the basic specifications of the engine. This arrangement would account for the rather impressive statistics reached despite its 1939 design period.

As a fighter, the Su-1 was envisioned with a combined cannon/machine gun armament consisting of 1 x 20mm ShVAK cannon coupled with 2 x 7.62mm ShKAS machine guns. The cannon would most likely have been added to the engine block, perhaps firing through the propeller hub, with the machine guns fitted either to the upper fuselage or leading edge of each wing.

The Su-1 prototype was made ready in the spring of 1940 to which the aircraft achieved its first flight on June 15th of that year. The outing proved a success and additional development ensued resulting in further flights. However, on an August 3rd test flight, the pilot mistakenly landed the prototype with its undercarriage raised, resulting in weeks of damage of repair (particularly the propeller blades). The prototype was once again ready for testing in September. On October 2nd, another test flight yielded a failure of the engine, sending the Su-1 prototype into a controlled glide crash land. Technical issues with the turbochargers consistently dogged the program from thereon out resulting in sparse flights recorded. However, in April of 1941, the prototype did manage to reach an altitude of 32,810 feet and recorded a maximum speed of 400 miles per hour.

Work continued on bettering the Su-1 design and this resulted in the related Su-3 development. The wing assemblies were revised while still retaining the troublesome TK-2 turbochargers of the Su-1. The new wings did add to improved performance numbers but the technical issues surrounding the Tk-2 systems would eventually stall the program and, ultimately, lead to its cancellation. The Su-1/Su-3 design absolutely required the turbochargers for absolute performance at attitude and their meddlesome quality all but assured the aircraft would never be adopted into service.

The Su-1/Su-3 program was terminated in full on April 16th, 1941. Both prototypes were later destroyed in aerial bombings by German aircraft as the Soviet Union went to war against their one-time ally.


Specifications



Year:
1940
Status
Cancelled
Crew
1
[ 2 Units ] :
Sukhoi - Soviet Union
National flag of Soviet Union Soviet Union
- Fighter
- Interception
- X-Plane / Developmental
Length:
27.62 ft (8.42 m)
Width:
37.73 ft (11.5 m)
Height:
8.89 ft (2.71 m)
(Showcased structural dimension values pertain to the Sukhoi Su-1 production model)
Empty Weight:
5,501 lb (2,495 kg)
MTOW:
6,338 lb (2,875 kg)
(Diff: +838lb)
(Showcased weight values pertain to the Sukhoi Su-1 production model)
1 x Klimov M-105P liquid-cooled twin-turbocharged V12 engine developing 1,100 horsepower.
(Showcased powerplant information pertains to the Sukhoi Su-1 production model)
Max Speed:
398 mph (640 kph; 346 kts)
Service Ceiling:
41,010 feet (12,500 m; 7.77 miles)
Max Range:
447 miles (720 km; 389 nm)
Rate-of-Climb:
3,176 ft/min (968 m/min)
(Showcased performance values pertain to the Sukhoi Su-1 production model; Compare this aircraft entry against any other in our database)
PROPOSED:
1 x 20mm ShVAK cannon
2 x 7.62mm ShKAS machine guns
(Showcased armament details pertain to the Sukhoi Su-1 production model)
Su-1 (I-330) - First prototype; 1 example constructed; fitted with 1 x Klimov M-105P liquid-cooled twin-turbocharged V12 engine of 1,100 horsepower.
Su-3 - Second Prototype; 1 example constructed; revised wings with less area.
Military lapel ribbon for Operation Allied Force
Military lapel ribbon for the Arab-Israeli War
Military lapel ribbon for the Battle of Britain
Military lapel ribbon for the Battle of Midway
Military lapel ribbon for the Berlin Airlift
Military lapel ribbon for the Chaco War
Military lapel ribbon for the Cold War
Military lapel ribbon for the Cuban Missile Crisis
Military lapel ribbon for pioneering aircraft
Military lapel ribbon for the Falklands War
Military lapel ribbon for the French-Indochina War
Military lapel ribbon for the Golden Age of Flight
Military lapel ribbon for the 1991 Gulf War
Military lapel ribbon for the Indo-Pak Wars
Military lapel ribbon for the Iran-Iraq War
Military lapel ribbon for the Korean War
Military lapel ribbon for the 1982 Lebanon War
Military lapel ribbon for the Malayan Emergency
Military lapel ribbon representing modern aircraft
Military lapel ribbon for the attack on Pearl Harbor
Military lapel ribbon for the Six Day War
Military lapel ribbon for the Soviet-Afghan War
Military lapel ribbon for the Spanish Civil War
Military lapel ribbon for the Suez Crisis
Military lapel ribbon for the Vietnam War
Military lapel ribbon for Warsaw Pact of the Cold War-era
Military lapel ribbon for the WASP (WW2)
Military lapel ribbon for the World War 1
Military lapel ribbon for the World War 2
Military lapel ribbon for the Yom Kippur War
Military lapel ribbon for experimental x-plane aircraft
* Ribbons not necessarily indicative of actual historical campaign ribbons. Ribbons are clickable to their respective campaigns/operations.

Disclaimer | Privacy Policy | Cookies


The "Military Factory" name and MilitaryFactory.com logo are registered ® U.S. trademarks protected by all applicable domestic and international intellectual property laws. All written content, illustrations, and photography are unique to this website (unless where indicated) and not for reuse/reproduction in any form. Material presented throughout this website is for historical and entertainment value only and should not to be construed as usable for hardware restoration, maintenance, or general operation. We do not sell any of the items showcased on this site. Please direct all other inquiries to militaryfactory AT gmail.com.

Part of a network of sites that includes GlobalFirepower, a data-driven property used in ranking the top military powers of the world and WDMMA.org, the World Directory of Modern Military Aircraft.


Facebook Logo YouTube Logo

www.MilitaryFactory.com • All Rights Reserved • Content ©2003-