The Ho XII Training Airplane

Usage
 

Trainer
 

Fuselage Construction

Steel tubing
 

Wing Construction
 

Wood
 

Capacity
 

Pilot and trainee abreast
 

Motor type
 

DKW 6 Cylinder
 

Power
 

66 kW (88.5 HP)
 

Span
 

16.0 m
 

Sweep Angle
 

29 degrees
 

Taper Ratio
 

6
 

Wing Root Thickness
 

13% chord
 

Wing Root Depth
 

3.0 m
 

Rib Spacing
 

0.4 m
 

Wing Area
 

38.5 m2
 

Aspect Ratio
 

6.7
 

Pilot position
 

Seated
 

Mid-section width
 

2.4 m
 

Cockpit width
 

1.2 m
 

Cockpit height (from seat)
 

1.1 m
 

Empty weight
 

460 kg
 

Ballast (water)
 

--- kg
 

Additional payload
 

160 kg
 

Fuel
 

80 kg
 

Maximum weight
 

700 kg
 

Wing loading
 

32.3 kg/m2
 

Engine loading

10.6 kg/kW
 

Stall speed
 

75 km/h
 

Landing speed
 

75 km/h
 

Cruise speed
 

180 km/h
 

Maximum speed (horizontal)

200 km/h
 

Maximum speed
 

200 km/h
 
On a trip to Chemnitz, we were able to inspect the auxiliary powerplant of a He 177. It was powered by a six cylinder DKW engine, developing 90 HP. We decided that it would be perfect for a light trainer that was needed to prepare pilots for the Ho VII.

 The Ho XII was built secretly, as official approval was not expected. Again the "Mustang" airfoil was used, however with higher Re numbers than the ill fated Ho IV b.

 Scheidhauer test flew the two place side-by-side machine as a glider near the end of 1944. The flight was too short to test the airfoil. The DKW engine was never installed.

 If it had been given the chance, I feel that this aircraft would have become a very attractive club trainer.