Focke-Wulf Fw 61 (1936) is often considered the first practical, functional helicopter. It was also known as the Fa 61, as Focke began a new company—Focke-Achgelis—after development had begun. The first prototype, the V 1 D-EBVU, had its first free flight on 26 June 1936 with Ewald Rohlfs at the controls.[4] By early 1937, the second prototype, V 2 D-EKRA, was completed and flown for its first flight. On 10 May 1937, it accomplished its first autorotation landing with the engine turned off.