Messerschmitt Me 309

Me 309
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Type	Fighter
Manufacturer	Messerschmitt
Designed by	Willy Messerschmitt
Maiden flight	18 July 1942
Retired	1943
Status	Experimental
Primary user	Luftwaffe
Number built	4
Developed from	Messerschmitt Bf 109

The Messerschmitt Me 309 was a prototype German fighter designed in the early years of World War II to replace the Messerschmitt Bf 109. Although it had many advanced features, the Me 309's performance left much to be desired and it suffered from so many problems that the project was cancelled with only four prototypes built. The Me 309 was one of several failed Messerschmitt projects intended to replace the aging Bf 109, the others being the Me 209 and the Me 209-II.

Design and development

The Me 309 project began in mid-1940, just as the Bf 109 was having its first encounters with the Spitfire in the Battle of Britain, the first aircraft to match the 109 in speed and performance. Already Messerschmitt anticipated the need for an improved design to replace the Bf 109. The RLM, however, did not feel the same urgency, with the project given a low priority resulting in the design not being finalized until the end of 1941.

The new fighter had many novel features, such as tricycle landing gear and a pressurized cockpit which would have given it more comfortable and effective high-altitude performance. Each of the new features was first tested on a number of Bf 109F airframes, the V23 having a ventral radiator, the V31 with radiator and tricycle landing gear, and the V30 having a pressurized cockpit.

Testing

Low government interest in the project delayed completion of the first prototype until spring 1942 and trouble with the nose wheel pushed back the 309's first flight to July. When it did fly, the Me 309's performance was satisfactory, about 30 mph (50 km/h) faster than a standard Bf 109G but not exemplary. In fact, the Bf 109G could out-turn its intended replacement. With the addition of armament, the aircraft's speed decreased to an unacceptable level. In light of its poor performance and the much more promising development of the Focke-Wulf Fw 190D, the Me 309 was cancelled.

In 1943, Messerchmitt made one last attempt at creating a replacement for the Bf 109 in the form of the Me 209-II. It was essentially a modification of the existing 109 airframe, Messerschmitt designers not wanting to invest the time and trouble in a new design like the Me 309.

Specifications (Me 309)

General characteristics

• Crew: one, pilot
• Length: 9.46 m (31 ft 0 in)
• Wingspan: 11.04 m (36 ft 3 in)
• Height: 3.90 m (12 ft 10 in)
• Wing area: 16.6 m² (179 ft²)
• Empty weight: 3,530 kg (7,766 lb)
• Loaded weight: 4,250 kg (9,350 lb)
• Powerplant: 1× Daimler-Benz DB 603G , 1,308 kW (1,750 hp)

Performance

• Maximum speed: 733 km/h (457 mph)
• Range: 1,100 km (686 miles)
• Service ceiling: 12,000 m (39,360 ft)
• Wing loading: 256 kg/m² (52 lb/ft²)
• Power/mass: 0.31 kW/kg (0.19 hp/lb)

Armament

• 2 × 15 mm MG 151 machine guns
• 3 × 13 mm MG 131 machine guns

References

• Green, William. War Planes of the Second World War, Fighters, vol. I. London: Hanover House, 1960.
• Jackson, Robert. Infamous Aircraft: Dangerous Designs and their Vices. Barnsley, Yorkshire, UK: Pen and Sword Aviation, 2005. ISBN 1-84415-172-7.

See also

Related development
Bf 109 - Me 209 - Me 209-II - Me 409 - Me 509 - Me 609

Designation sequence
Hs 297 - Hs 298 - Fw 300 - Me 309 - Me 310 - Do 317 - Do 318 Related lists
List of military aircraft of Germany - List of World War II military aircraft of Germany

This article is licensed under the GNU Free Documentation License. It uses material from the Wikipedia article "Messerschmitt Me 309".