Results 191 to 200 of about 21,200 (250)

Study on viscosity and yield stress of magnetic fluid applied to low temperature magnetic fluid seal. [PDF]

Sci Rep
Liu J, Li D.
europepmc   +1 more source

Straightening trajectory of hooked fibers in the fiber transport channel of rotor spinning investigated by fluid solid coupled simulation. [PDF]

Sci Rep
Li F, Zhang D, Wang Q, Zhou B, Qiu F.
europepmc   +1 more source

Dynamic guidance control for UAV landing on autonomous surface vessel. [PDF]

Sci Prog
Lin CY, Tseng YC, Yao WS.
europepmc   +1 more source

Fractional-order PID control for elevation and azimuth in a twin rotor system. [PDF]

Sci Rep
Wendimu AA, Matušů R, Shaikh I, Kebede ZK.   +3 more
europepmc   +1 more source

Pentameric Architecture of the SARS-CoV-2 Envelope Protein Revealed by SEC-MALS, Cryo-EM, and Molecular Dynamics. [PDF]

J Phys Chem B
Weng ZW, Farhat D, Lee JY, Hsu SD.
europepmc   +1 more source

Pseudouridine synthase PUS1 and initiation factor mtIF2 are human mitoribosomal small subunit assembly factors. [PDF]

Nat Commun
Singh V, Shiriaev D, Bilalli L, Khawaja A, Rorbach J.   +4 more
europepmc   +1 more source

Research on power flow of encased differential gear train in coaxial contra-rotating gearbox. [PDF]

Sci Rep
Zhang D, Zhu R, Zhang W, Cui J, Ma L.
europepmc   +1 more source

Cryo-EM and single molecule visualization unravel the role of human condensin II activation by M18BP1 in driving DNA compaction

Borsellini A, Chamera S, Cecatiello V, Andrecka J, Vannini A.   +4 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   +3 more sources

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