국내 최대 기계 및 로봇 연구정보

기술보고서

기술보고서 게시판 내용
타이틀	Technology Assessment for Large Vertical-Lift Transport Tiltrotors
저자	Germanowski, Peter J.;; Stille, Brandon L.;; Strauss, Michael P.
Keyword	AERODYNAMIC CHARACTERISTICS;; HELICOPTER DESIGN;; MODELS;; ROTARY WING AIRCRAFT;; ROTOR AERODYNAMICS;; ROTORS;; TECHNOLOGY ASSESSMENT;; TILT ROTOR AIRCRAFT;; VERTICAL MOTION SIMULATORS;; VERY LARGE TRANSPORT AIRCRAFT;; WIND TUNNEL TESTS
URL	http://hdl.handle.net/2060/20110008354
보고서번호	NASA/CR-2010-216384
발행년도	2010
출처	NTRS (NASA Technical Report Server)
ABSTRACT	The technical community has identified rotor efficiency as a critical enabling technology for large vertical-lift transport (LVLT) rotorcraft. The size and performance of LVLT aircraft will be far beyond current aircraft capabilities, enabling a transformational change in cargo transport effectiveness. Two candidate approaches for achieving high efficiency were considered for LVLT applications: a variable-diameter tiltrotor (VDTR) and a variable-speed tiltrotor (VSTR); the former utilizes variable-rotor geometry and the latter utilizes variable-rotor speed. Conceptual aircraft designs were synthesized for the VDTR and VSTR and compared to a conventional tiltrotor (CTR). The aircraft were optimized to a common objective function and bounded by a set of physical- and requirements-driven constraints. The resulting aircraft were compared for weight, size, performance, handling qualities, and other attributes. These comparisons established a measure of the relative merits of the variable-diameter and -speed rotor systems as enabling technologies for LVLT capability.