Ho Vc: Rebuild And Distrust




Fuselage Construction

Steel tube


Wing Construction






Pilo t

Motor type


Two Hirth HM 60R engine




2 x 59 kW (2 x 79 HP)




16.0 m


Sweep Angle


25.5 degrees (outer wings 36 degrees)

Taper Ratio




Wing Root Thickness


16% chord


Wing Root Depth


4.5 m


Rib Spacing


0.4 m (0.2 m at the leading edge)

Wing Area


38.0 m2


Aspect Ratio




Pilot position




Mid-section width


4.0 m


Cockpit width


0.80 m


Cockpit height (from seat)


1.0 m


Empty weight


1440 kg


Ballast (water)




Additional payload


80 kg




80 kg


Maximum weight


1600 kg


Wing loading


38.0 kg/m2


Engine loading

13.5 kg/kW


Stall speed


70 km/h


Landing speed


70 km/h


Cruise speed


230 km/h


Maximum speed (horizontal)

260 km/h


Maximum speed


350 km/h

As the war began, the H V b was pushed out of the hangar to make room for more pressing projects. There it sat in the rain and snow for two years, while we made several attempts in higher places to have the aircraft attended to. Finally, General Udet himself intervened, and ordered the aircraft rebuilt. Peschke repaired it and modified it to a single seater, at the same time, making it a "c". Walter then flew it to Gottingen for aerodynamic testing. Here, in 1942, I finally had the opportunity to fly this wonderful little machine myself.

 The official verdict of the Gottingen tests were not flattering. Professor A. W. Quick from the Aircraft Testing Department in Berlin stated that "maximum lift decreases with increased sweepback, which also causes pitch instability, stall danger and difficult steering"! The H V c had proven all this wrong during its test program, but the results were unfortunately never published.

 Previous wind tunnel tests of a flying wing model in Gottingen, were probably the reason for its reluctant acceptance. The swept wing tested was quite different from ours, with the wrong aspect ratio, wrong taper, wrong washout and different control surfaces. The data obtained from this model was correct, but had little to do with our design.

 The end of the H V c came in the spring of 1943, during a takeoff. The aircraft failed to gain altitude, and hit the roof of a hangar. The pilot was not hurt. It appeared that he had attempted to take off with the flaps in the full down landing position!