| Type |
Single seat sportplane |
| Engine |
1 Haacke HFM 2 , 26 hp |
| Dimensions |
Length , height , span 7 m , wing area , |
| Weights |
Empty , loaded , max. take off weight |
| Performance |
Max.. speed , cruising speed , range , endurance , service ceiling , climb |
| Type |
Werk.Nr |
Registration |
History |
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The first aircraft the brothers designed was the R I, a compact, open-cockpit monoplane with strut support of the wings and a two-wheel undercarriage and tail skid Figure 5 (a), seen with a Zeppelin hangar in the background. The fuselage consisted of a welded steel tube frame, the 7 m span wing had ailerons and the tail surfaces had elevators, rudder, and fin for longitudinal and lateral control. The engine was a two-cylinder Haacke HFM 2 motor with 19 kW (26 HP), but other sources state 21 kW (28 HP) or two versions with either 15 or 25 kW (20 or 34 HP).Due to the large wing surface the wing loading was low and very short take-off and landing distances could be obtained at speeds as low as 40 km/h . A photo gives a nice impression of the relatively small size of the first Rieseler aircraft . Walter increasingly devoted his skills to refinement of the design, while his brother Werner became a very ambitious aerobatic pilot. With their first development, the R I, Werner participated at many flight competitions and won the 1st prize the same year at a landing competition in Johannisthal.
