Conceptual design studies of candidate V/STOL lift fan commercial short haul transport for 1980 - 1985 V/STOL lift fan study [PDF]
Conceptual designs of V/STOL lift fan commercial short haul transport aircraft for the 1980-85 time period were studied to determine their technical and economic feasibility. The engine concepts included both integral and remote fans.
Eldridge, W. M. +4 more
core +1 more source
Feasibility study of modern airships. Phase 2: Executive summary [PDF]
A feasibility study of modern airships has been completed. Three promising modern airship systems' concepts and their associated missions were studied; (1) a heavy-lift airship, employing a non-rigid hull and a significant amount of rotor lift, used for ...
core +1 more source
Flying cars economically favor battery electric over fuel cell and internal combustion engine. [PDF]
PNAS Nexus, 2023 Liu M +8 more
europepmc +1 more source
Preliminary performance appraisal of Navy V/STOL transport and search-type airplanes using hydrogen fuel [PDF]
First-cut estimates are given of the performance advantages of liquid-hydrogen-fueled, ejector wing, V/STOL aircraft designed for shipboard delivery and search-type missions.
Strack, W. C.
core +1 more source
Airborne gamma-ray mapping using fixed-wing vertical take-off and landing (VTOL) uncrewed aerial vehicles. [PDF]
Front Robot AI, 2023 Woodbridge E +5 more
europepmc +1 more source
Preliminary design-lift/cruise fan research and technology airplane flight control system [PDF]
This report presents the preliminary design of a stability augmentation system for a NASA V/STOL research and technology airplane. This stability augmentation system is postulated as the simplest system that meets handling qualities levels for research ...
Gotlieb, P., Lewis, G. E., Little, L. J.
core +1 more source
Multirotor Motor Failure Detection with Piezo Sensor. [PDF]
Sensors (Basel), 2023 Ambroziak L, Ołdziej D, Koszewnik A.
europepmc +1 more source
A spiral guidance approach concept for commercial VTOL operations [PDF]
The results of an investigation of the guidance and navigation requirements for VTOL spiral descents in the presence of winds are reported. Models were developed to describe the spiral maneuver and candidate guidance laws were formulated and analyzed. An
Hoffman, W. C., Hollister, W. M.
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A remote augmentor lift system with a turbine bypass engine [PDF]
Two supersonic vertical takeoff or landing (VTOL) aircraft engine types, a conventional medium bypass ratio turbofan, and a turbine bypass turbojet were studied. The aircraft assumed was a clipped delta wing with canard configuration.
Fishbach, L. H., Franciscus, L. C.
core +1 more source
Control of a Quadrotor Equipped with a Fixed-wing by Tilting Some of Four Rotors
International Journal on Smart Material and Mechatronics, 2017 —Unmanned aerial vehicles (UAVs) are beingexpected to be used for the vegetational observation and theinformation collection of disaster sites. Especially, rotorcraftstypified by helicopters are attractive, because they are able tohover and achieve ...
Yoshikazu Nakamura +2 more
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