Messerschmitt Me 309

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Me 309
Me309-1.jpg
Me 309
General information
Type Fighter
Manufacturer Messerschmitt
Designer
StatusExperimental
Primary user Luftwaffe
Number built4
History
First flight18 July 1942
Retired 1943
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 had so many problems that the project was cancelled with only four prototypes built. The Me 309 was one of two failed Messerschmitt projects intended to replace the Bf 109, the other being the 1943 Me 209 project.

Contents

Design and development

Me 309 in 1943 Een prototype van de Messerschmitt Me 309 met verwijderde propellerdop 2157 001-050.jpg
Me 309 in 1943

Messerschmitt's failure to resolve the stability and other problems of the Me 209 project during 1940 caused Willy Messerschmitt to scrap much of the earlier design work when he commissioned wind tunnel testing of new wing designs and the cockpit canopy in January 1941. Other changes included dropping the Daimler-Benz DB 601 engine and substituting tricycle landing gear for the previous tail-dragger landing gear. The revised design was formally redesignated as the Me 309 in May. [1]

The new fighter included 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 a radiator and tricycle landing gear, and the V30 having a pressurized cockpit.

Low government interest in the project delayed completion of the first prototype until spring 1942, and trouble with the nosewheel pushed back the 309's first flight to July. When it did fly, the Me 309's performance was satisfactory about 50 km/h (30 mph) 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 canceled.

A model of the proposed Me 609 Messerschmitt Me 609 model.jpg
A model of the proposed Me 609

In an attempt to revive the project, initiated in response to a 1941 Reich Air Ministry requirement for a new Zerstörer (destroyer) to replace the twin engined Messerschmitt Bf 110, Messerschmitt's response was the Me 609. In order to meet the requirement of a new design in a minimum of time and with a minimum of new parts, the failed Me 309 project was used as the basis of the new fighter. [2] The Me 609 would have joined two Me 309 fuselages with a new centre wing section. Only the two inner wheels of the joined Me 309's main landing gears would have been used and would retract into the centre section. This resulted in an unusual four-wheel arrangement. [3] The Me 609 would have had its cockpit in the port fuselage, the starboard being smoothed over. Two versions were planned: a heavy fighter with four or six 30 mm MK 108 cannon, and a Schnellbomber (Fast bomber) variant with two 30 mm MK 108 cannon and a bombload of 1,000 kg (2,200 lb) carried beneath the fuselages. [4] By the time designs were being ironed out, the revolutionary Messerschmitt Me 262 turbojet negated the need for further piston-engined fighter design. [5]

In 1943, Messerschmitt 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. [6]

Specifications (Me 309)

Top view of the Me 309 Messerschmitt Me 309 top-view silhouette.png
Top view of the Me 309

Data from Die Deutsche Luftrüstung 1933–1945 [7]

General characteristics

Performance

Armament

See also

Related development

Aircraft of comparable role, configuration, and era

Related lists

Related Research Articles

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References

  1. Sharp & Douglas, pp. 36–41
  2. Lepage 2009, p. 222.
  3. Nowarra, Heinz J. (1993). Die Deutsche Luftrüstung 1933-1945, Band 3. Germany: Bernard & Graefe. pp. 243–244.
  4. Lepage 2009, p. 223.
  5. Green 1960, p. 191.
  6. Green 1960, p. 190.
  7. Nowarra 1993, pp. 215–218.
  8. Jane's Fighting Aircraft of WWII p178

Sources