Hanriot H.220


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Hanriot H.220

Included among exhibits at the Salon de l'Aeronautique held in Paris in November 1936 was a striking all-metal twin-engined three-seat fighter. It had a somewhat abbreviated oval-section monocoque fuselage, a shoulder-mounted semi-cantilever wing carrying split trailing-edge flaps over its entire span and two 450hp Renault 12Roi 12-cylinder inline air-cooled engines projecting ahead of the fuselage nose. This, the H.220, had been designed to a C3 requirement prepared by the Service Technique de l'Aeronautique and issued in October 1934. Other contenders were the Breguet 690, the Potez 630, the Loire-Nieuport 20 and the Romano 110. As it became evident that the H.220 would be underpowered, the Renault engines were discarded in favour of 680hp Gnome-Rhone 14M 14-cylinder radials, and, with these installed, the first flight test was made at Avord on 21 September 1937. The intended armament of the H.220 comprised two forward-firing 20mm cannon and two aft-firing 7.5mm MAC 1934 machine guns on a flexible mounting, but, in the event, no armament was fitted. On 17 February 1938, the prototype made a forced landing at Avord after losing the starboard propeller following a failure in the reduction gearbox. The poor stability evinced during flight testing of the H.220 (which had resulted in progressive changes in the contours and size of the vertical surfaces), coupled with inadequate internal capacity and some lack of sturdiness revealed by the forced landing (as a result of which the fuselage was irreparable), dictated major redesign, resulting in the H.220-2.

Hanriot H.220

  Take-off weight3700 kg8157 lb
  Empty weight2673 kg5893 lb
  Wingspan12.80 m42 ft 0 in
  Length7.87 m26 ft 10 in
  Height3.40 m11 ft 2 in
  Wing area21.16 m2227.76 sq ft
  Max. speed520 km/h323 mph
  Range850 km528 miles

Hanriot H.220A three-view drawing (1703 x 1277)

Robert Willis, e-mail, 21.08.2020 03:02

Making this a single seater would sacrifice rear defense & render the aircraft far more vulnerable, eliminating the gunner who could warn of such attacks. The type was from the outset designed to carry two fixed forward firing 20 mm HS 404 cannon plus two 7.7 mm MAC 1934 machine guns. Such armament was already more than adequate.

re. "and fit bigger engines and you have the French P-38 Lightning."- Absurd. The aircraft was already too lightly built to be able to properly handle the weight & stresses imposed by the relatively small Gnome-Rhone 14Ms. Trying to fit the Allison V-1710 would have resulted in extremely high wing loading, likely have torn the airframe to shreds during high-G maneuvers, or at least ensured undercarriage collapse. More to the point, the U.S. specifically blocked the sale of the Allison until after the invasion of France! If not the V-1710, then what? Sacrifice the HS 12Ys needed for D-520 production in favour of building half as many 12Y equipped Hanriots?!

No. The best idea would have been to fit the H-220 with Renault 12s or Ranger V-770s & produce it as a two seat night-fighter. This would allow for a reduction in Potez 631 production in favour of Potez 637. This in turn would allow for a reduction in Potez 63.11 production in favour of increasing Amiot 351 production.


bombardier, e-mail, 22.10.2011 20:29

Reduce the crew to 1,fit all armament forward and fit bigger engines and you have the French P-38 Lightning.


mike cole, e-mail, 07.02.2011 21:57

If they'd made it as a sinle seater withy forward firing armament,it could have worked.


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