The History of the XV-15 Tilt Rotor Research Aircraft

The Ames involvement with the tilt rotor aircraft began in 1957 with investigations of the performance and dynamic behavior of the Bell XV-3 tilt rotor aircraft. At the time, Ames Research Center was known as the Ames aeronautical laboratory of the national Advisory Committee for Aeronautics (NACA).

As we approach the new millennium, and after more than 40 years of effort and the successful completion of our initial goals, it is appropriate to reflect on the technical accomplishments and consider the future applications of this unique aircraft class, the tilt rotor.

The XV-15 tilt rotor research program resulted in part from earlier investigations by the U.S. military seeking new and more efficient concepts for air support of field operations. The XV-3 tilt rotor emerged from the Army/Air Force convertiplane program of the 50's as a strong contender. However, it faced significant stability problems that discouraged many supporters and threatened to swamp the program. The program was continued by those in industry and Government who believed in the concept and its potential, and were willing to risk their investment. They were rewarded by the discovery of new techniques and the incorporation of new materials technology that made it possible to successfully advocate army participation in the program with both funding and personnel. The unique aspect and synergistic values of the Army AARL/AMRDLNASA interagency participation made this possible. It demonstrated the value of sharing resources in direct partnership toward common goals. Although not yet integrated into Army field strategies, the tilt rotor aircraft holds significant potential for consideration in future missions. The soon-to-be deployed Marine V-22 Osprey demonstrates the rewards of the investment of defense dollars in the tilt rotor research aircraft project. There likely will be more.