Loire 250
1935
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Loire 250

In 1934, the Service Technique issued an outline specification for a new single-seat fighter, all the contenders but one having all-metal stressed-skin monocoque structures with enclosed cockpits and retractable undercarriages. The structural exception was the MS 405. The Loire 250 was powered by a 1000hp Hispano- Suiza 14Ha-79 two-row radial and was first flown on 27 September 1935 temporarily with a fixed-pitch two-bladed wooden propeller. Intended armament comprised two synchronised 20mm cannon and two 7.5mm machine guns, but trials with the Loire 250 proved disappointing from the outset, the prototype suffering serious drag problems. Various palliatives were applied to reduce drag, the vertical tail was redesigned to rectify a stability problem and a three-bladed variable-pitch propeller was fitted. Nonetheless the fighter proved incapable of attaining the max speed of "at least 485km/h" called for by the specification, and thus the Loire 250 was eliminated from the contest at an early stage.

3-View 
Loire 250A three-view drawing (1278 x 930)


Specification 
 WEIGHTS
    Take-off weight2200 kg4850 lb
    Empty weight1500 kg3307 lb
 DIMENSIONS
    Wingspan10.80 m35 ft 5 in
    Length7.81 m26 ft 7 in
    Height3.72 m12 ft 2 in
    Wing area16.30 m2175.45 sq ft
 PERFORMANCE
    Max. speed480 km/h298 mph
    Range875 km544 miles

Comments
leo rudnicki, 30.04.2009

Looks like a curtiss-wright CW-21B but more angular. The designers didn't use French Curves...Ironic...

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