The Dornier design was given the project number Do 19 , while the Junkers prototype became the Ju 89 .
Both Dornier and Junkers were competitors for the contract , and each received an order for three prototypes in late 1935 .
The competitors design was given the project number Do 19 , while the Junkers prototype became the Ju 89 .
Both Dornier and Junkers were competitors for the contract , and each received an order for three prototypes in late 1935 .