Results 311 to 320 of about 72,527 (347)
Some of the next articles are maybe not open access.
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.
openaire +3 more sources
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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, 2017
The content distribution of chemical groups and the kinetics of curing process in the micro-region interfaces of nitrate ester plasticized polyether (NEPE) based propellant/hydroxyl-terminated polybutadiene (HTPB) based liner were studied by in-situ ...
Dayong Gui +9 more
semanticscholar +1 more source
The content distribution of chemical groups and the kinetics of curing process in the micro-region interfaces of nitrate ester plasticized polyether (NEPE) based propellant/hydroxyl-terminated polybutadiene (HTPB) based liner were studied by in-situ ...
Dayong Gui +9 more
semanticscholar +1 more source
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.
openaire +2 more sources
, 2015
To investigate the mechanical properties and fracture mechanisms of hydroxyl-terminated polybutadiene (HTPB) propellant at low temperature and high strain rate, uniaxial tensile tests were conducted over the range of temperatures 233 to 298 K and strain ...
Zhejun Wang +3 more
semanticscholar +1 more source
To investigate the mechanical properties and fracture mechanisms of hydroxyl-terminated polybutadiene (HTPB) propellant at low temperature and high strain rate, uniaxial tensile tests were conducted over the range of temperatures 233 to 298 K and strain ...
Zhejun Wang +3 more
semanticscholar +1 more source
, 2015
Nano Bi2WO6 was prepared by hydrothermal method and characterized by XRD, SEM and EDS. Catalytic decomposition effects of nano-Bi2WO6 on AP, RDX and HMX were studied by DSC method.
Ta‐Cheng Wei +5 more
semanticscholar +1 more source
Nano Bi2WO6 was prepared by hydrothermal method and characterized by XRD, SEM and EDS. Catalytic decomposition effects of nano-Bi2WO6 on AP, RDX and HMX were studied by DSC method.
Ta‐Cheng Wei +5 more
semanticscholar +1 more source
, 2015
To study the high strain rate tensile behaviors of hydroxyl-terminated polybutadiene (HTPB) propellant at low temperatures, uniaxial tensile tests were conducted at different strain rates (0.4–42.86 s−1) and temperatures (233–298 K) using an INSTRON ...
Zhejun Wang, H. Qiang, G. Wang
semanticscholar +1 more source
To study the high strain rate tensile behaviors of hydroxyl-terminated polybutadiene (HTPB) propellant at low temperatures, uniaxial tensile tests were conducted at different strain rates (0.4–42.86 s−1) and temperatures (233–298 K) using an INSTRON ...
Zhejun Wang, H. Qiang, G. Wang
semanticscholar +1 more source
, 2015
A green process was developed for a graphene–titanium dioxide nanocomposite (GTNC) synthesis by dispersing titanium dioxide (TiO2) nanoparticles and graphene nano-sheets (GNSs) in ethanol via ultrasonication followed by microwave irradiation.
Abhijit Dey +6 more
semanticscholar +1 more source
A green process was developed for a graphene–titanium dioxide nanocomposite (GTNC) synthesis by dispersing titanium dioxide (TiO2) nanoparticles and graphene nano-sheets (GNSs) in ethanol via ultrasonication followed by microwave irradiation.
Abhijit Dey +6 more
semanticscholar +1 more source
Thermal decomposition and combustion characteristics of Al/AP/HTPB propellant
Journal of Thermal Analysis and Calorimetry, 2020Jifei Yuan +4 more
semanticscholar +1 more source
, 2015
This study deals with the influence of nanosized titanium dioxide (TiO2) catalysts on the decomposition kinetics of ammonium nitrate (AN) and ammonium nitrate-based composite solid propellant.
Anuj A. Vargeese +2 more
semanticscholar +1 more source
This study deals with the influence of nanosized titanium dioxide (TiO2) catalysts on the decomposition kinetics of ammonium nitrate (AN) and ammonium nitrate-based composite solid propellant.
Anuj A. Vargeese +2 more
semanticscholar +1 more source