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SPONSORING / MONITORING AGENCY NAME(S) AND ADDRESS(ES) 10. SPONSOR/MONITOR'S ACRONYM(S)Office of Naval Research ONR ONR Code 36; ExLog FNC IPT Ballston Centre Tower One
SPONSOR/MONITOR'S REPORT
North Quincy Street
NUMBER(S)Arlington, VA 22217-5660
DISTRIBUTION / AVAILABILITY STATEMENTApproved for public release; distribution is unlimited.
SUPPLEMENTARY NOTES
ABSTRACTThe Mono Tiltrotor (MTR) is a proposed, innovative heavy-lift rotorcraft architecture. The emerging military strategies most suited to potential application of the MTR are Navy Sea Basing with Ship to Objective Maneuver, and Army Future Combat Systems with mounted maneuver and air mobility. The present work reports on a conceptual design study that has been conducted to predict the sizes and weights of the MTR architecture and to objectively examine its potential performance. A detailed weight budget has been determined based on historical component data for helicopters and airplanes. A thorough component drag breakdown has allowed for good estimates of the overall lift-to-drag ratio of the MTR concept in both the helicopter mode and airplane cruise conditions. A requirement was that the machine carry its payload over an unprecedented unrefueled distance of 1,000 nautical miles. It is shown that if technically realizable, the MTR architecture allows for a relatively compact and lightweight rotor design, with an accompanying lightweight airframe and relatively low fuel load compared to competing helicopter concepts. Ship to Objective Maneuver, and Army Future Combat Systems with mounted maneuver and air mobility. The capabilities of the MTR are predicated on the combination of an advanced coaxial rotor system and sophisticated kinematics that morph the aircraft topology for efficient flight over the entire operational envelope. The MTR rotorcraft integrates a coaxial rotor, a folding lifting wing system, a lightweight airframe and an efficient cargo handling system that is capable of rapidly and economically transporting different types of mission tailored payloads. The present work reports on a conceptual design study that has ...
