Heinkel HD 33
| Industry | Aerospace |
|---|---|
| Founder | Ernst Heinkel |
The Heinkel HD 33 was designed as a scout bomber by Ernst Heinkel Flugzeugwerke.
Development
The HD 33 featured a two-seat biplane configuration and was initially equipped with an Armstrong Siddeley Puma inline engine. Its maiden flight occurred in 1928; however, early flight trials revealed unsatisfactory performance. Consequently, the aircraft was returned to the manufacturer where it received a BMW VI engine upgrade along with a redesigned radiator, leading to its reclassification as the HD 33a. Following subsequent testing under this updated setup, plans were made to send the aircraft to the Lipitsk flight test facility, but these were ultimately abandoned by the German military. As a result, the HD 33 remained solely a prototype. Efforts to create a commercial variant never came to fruition.