BMW 117 explained

The BMW 117 was a piston aircraft engine developed by BMW in the 1930s. Development work stopped in 1937. The BMW 117 engine was initially known as the BMW XV.

Bibliography

• Book: Pierer. Christian. Fred. Jakobs. Robert. Kröschel. BMW aero engines milestones in aviation from the beginnings to the present. 2009. Heel. Königswinter. 978-3-86852-214-3. German.