Results 221 to 230 of about 63,753 (279)

Distinguishing a Drone from Birds Based on Trajectory Movement and Deep Learning. [PDF]

Sensors (Basel)
Nesteruk A, Nikitin V, Albrekht Y, Ścisło Ł, Grela D, Król P.   +5 more
europepmc   +1 more source

Improved data driven strategy for aircraft controller design. [PDF]

Sci Rep
Jianhong W, Ramirez-Mendoza RA, Pena-Bermudez JC, Ruchun W.   +3 more
europepmc   +1 more source

Design evaluation of automatic bearing offset adjustment for marine propeller shaft. [PDF]

Sci Rep
Bsiso RM, Ripin ZM, Yi CP, Zaini Ridzwan MI.   +3 more
europepmc   +1 more source

Numerical simulation of the transition flight aerodynamics of cross-shaped quad-tiltrotor UAV. [PDF]

Sci Rep
Du S, Zha Y.
europepmc   +1 more source

Selective detection of a key region in chemotaxis signaling protein complexes by solid-state NMR. [PDF]

Biophys J
Allen JJ, Wang S, Rienstra CM, Thompson LK.   +3 more
europepmc   +1 more source

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Helicopter Main-Rotor/Tail-Rotor Interaction

Journal of the American Helicopter Society, 2000
Preliminary results from a study to model the interaction aerodynamics and aeroacoustics of the main and tail rotor of a helicopter in subsonic flow are presented. The configurations studied are: 1) two bladed main and tail rotors in hover, and 2) a four-bladed main rotor and two-bladed tail rotor in climbing flight.
Yin, J., Ahmed, S.R.
openaire   +5 more sources

Helicopter tail rotor noise

10th Aeroacoustics Conference, 1986
A study was made of helicopter tail rotor noise, particularly that due to interactions with the main rotor tip vortices, and with the fuselage separation mean wake. The tail rotor blade-main rotor tip vortex interaction is modelled as an airfoil of infinite span cutting through a moving vortex.
S.-T. CHOU, A. GEORGE
openaire   +1 more source

Aerodynamics and aeroacoustics of helicopter main-rotor/tail-rotor interaction

5th AIAA/CEAS Aeroacoustics Conference and Exhibit, 1999
Preliminary results from an ongoing effort to model the interaction aerodynamics and aeroacoustics of main- and tail rotor of a helicopter in subsonic flow are presented. The configurations studied are a) a two-blade main- and tail rotor in hover, and b) a four-blade main- and a two-blade tail rotor in climb flight.
Ahmed, S.R., Yin, J.
openaire   +2 more sources

Effect of tail-rotor torque variation on vibration at helicopter tail-rotor drive-train

2018 IEEE Aerospace Conference, 2018
Condition monitoring and fault diagnostics in rotorcraft have significant effect on improving safety level and reducing operational and maintenance costs. Most of the commercially available diagnostic tools for rotating machinery are based on vibration analysis.
Michael R. Habib, Mohammed A. Hassan, Abdel M. Bayoumi   +2 more
openaire   +1 more source