Results 281 to 290 of about 24,794 (297)
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2012
Publisher Summary This chapter explains the workings and efficiencies of a propeller. It first discusses the classic momentum theory where the thrust is distributed uniformly all over the actuator disc with no rotation of the disc. In the Blade element theory the velocities and differential forces acting on the element of the propeller blade are shown.
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Publisher Summary This chapter explains the workings and efficiencies of a propeller. It first discusses the classic momentum theory where the thrust is distributed uniformly all over the actuator disc with no rotation of the disc. In the Blade element theory the velocities and differential forces acting on the element of the propeller blade are shown.
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Journal of Forensic Sciences, 2000
Abstract The authors anlayze the case of an Albanian refugee who was killed by the propellers of the outboard engine of a rubber dinghy while illegally attempting to reach Italy. The finding of multiple parallel, deep clear-cut injuries is uncommon, but highly characteristic of the object producing the lesions.
DI NUNNO, Nunzio, COSIMO DI NUNNO
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Abstract The authors anlayze the case of an Albanian refugee who was killed by the propellers of the outboard engine of a rubber dinghy while illegally attempting to reach Italy. The finding of multiple parallel, deep clear-cut injuries is uncommon, but highly characteristic of the object producing the lesions.
DI NUNNO, Nunzio, COSIMO DI NUNNO
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Southern Medical Journal, 1976
Water skiing, boat racing, skin and scuba diving, and pleasure boat cruising are increasing in popularity. As a result the incidence of injuries secondary to motor propellers is becoming more frequent. In a ten-year period from 1963 to 1973, I collected a total of nine cases.
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Water skiing, boat racing, skin and scuba diving, and pleasure boat cruising are increasing in popularity. As a result the incidence of injuries secondary to motor propellers is becoming more frequent. In a ten-year period from 1963 to 1973, I collected a total of nine cases.
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2001
Propellants and explosives , Propellants and explosives , کتابخانه دیجیتال جندی شاپور ...
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Propellants and explosives , Propellants and explosives , کتابخانه دیجیتال جندی شاپور ...
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Performance of a Propeller in a Wake and the Interaction of Propeller and Hull
Journal of Ship Research, 1965Relations are developed which describe the propeller-hull interaction and the efficiency of the wake-operating propeller in the practical case where both potential and viscous effects are important. Momentum equations and the actuator disk representation of the propeller are used.
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The effect of propeller wake deformation on propeller design1
International Shipbuilding Progress, 1976A great deal of effort has been devoted in recent years to study of the deformation of the wake from propeller blades. Relationships between loading, vortex rollup, contraction, and pitch variation have been studied. This paper discusses analytical and experimental developments, and emphasizes the effects on design and performance of high speed high ...
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Propeller and Propeller-in-Wing Thrust Vectoring
AIAA Scitech 2021 Forum, 2021Jielong Cai +2 more
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The College Mathematics Journal, 1999
The late Leon Bankoff (he died in 1997) was a Beverly Hills, California, dentist who also was a world expert on plane geometry. (For G. L. Alexanderson's interview with Bankoff, see [l].) We became good friends. In 1979 he told me about a series of fascinating discoveries he had made about what he called the asymmetric propeller theorem. He intended to
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The late Leon Bankoff (he died in 1997) was a Beverly Hills, California, dentist who also was a world expert on plane geometry. (For G. L. Alexanderson's interview with Bankoff, see [l].) We became good friends. In 1979 he told me about a series of fascinating discoveries he had made about what he called the asymmetric propeller theorem. He intended to
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SOLID PROPELLANT UTILIZATION BY THE BURNING PROPELLANT-COAL AND PROPELLANT-PEAT MIXTURES
International Journal of Energetic Materials and Chemical Propulsion, 1997G. V. Melik-Gaikazov +8 more
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