Oberursel UR-2 Rotary

The Oberursel UR-2 rotary engine, rated at 110 hp, was the type used to power the Fokker Dr.1 triplane. Built by the Oberursel Motoren Gesellschaft of Frankfurt, Germany, it was an exact copy of the famous French LeRhone 110-hp rotary engine.

The UR-2 from Baron Manfred von Richthofen's airplane is on display at the Imperial War Museum, London, England. The UR-2 on display is one of the very few still in existence.

Click here to return to the Early Years Gallery.

Find Out More

Related Fact Sheets

Baron Manfred von Richthofen

Screening at Entrance
All visitors may be screened with a metal detector upon entry. In addition all bags are subject to search and may be placed through an X-Ray machine. Weapons are not permitted including pocket knives and firearms, to include conceal carry and other dangerous weapons.
Prohibited Items
Prohibited Items:
- Firearms*
- Knives
- Box cutters
- Food and Soda Drinks
- Alcohol
- Coolers

* Firearms, to include conceal carry and other dangerous weapons, are specifically prohibited in Federal facilities in accordance with 18 USC §930 (c)

Permitted Items:
- Water bottles (clear, sealed bottle, up to 20 oz.)
- Purses
- Camera bags
- Diaper bags
- Strollers
- Service animals

Please note the National Museum of the U.S. Air Force is not responsible for items left in vehicles.
Click here for frequently asked questions regarding items permitted inside the museum.
Visitor Photography Notice
Notice: Visitors may be filmed, photographed or recorded by the U.S. Air Force for educational and promotional uses, including for posting on public websites and social media.
Individuals are permitted to take their own photographs or videos while touring the museum.