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| DFS 39 | |
|---|---|
 | |
| General information | |
| Type | Experimental |
| Manufacturer | Deutsche Forschungsanstalt für Segelflug |
| Designer | |
| Number built | 1 |
| History | |
| First flight | 1936 |
| Developed from | Fieseler F 3 |
| Variants | DFS 40 |
Alexander Lippisch's Delta IV was a continuation of his work on delta wing designs pioneered in his Delta I, Delta II and Delta III aircraft.