Results 21 to 30 of about 36,758 (316)
Journal of Marine Science and Engineering, 2022 In order to maximize the propulsion efficiency of flapping hydrofoil, a new method is proposed in this paper. The effects of heave amplitude, pitch amplitude, and the phase difference between heave and surge on propulsion performance were analyzed by ...
Zixuan Wang +5 more
doaj +1 more source
Displaced geostationary orbit design using hybrid sail propulsion [PDF]
, 2011 Due to an increase in number of geostationary spacecraft and limits imposed by east-west spacing requirements, the geostationary orbit is becoming congested.
Biggs, James +9 more
core +1 more source
Determination of representative loading conditions for effective semitrailer design
Transport, 2014 Obtaining a representative loading spectrum that corresponds well to the reality is still one of the greatest challenges for fatigue life calculations and optimal design of the trailer body.
Karel Kural +3 more
doaj +1 more source
Performance optimization of the gasdynamic mirror propulsion system [PDF]
34th AIAA/ASME/SAE/ASEE Joint Propulsion Conference and Exhibit, 1998 Nuclear fusion appears to be a most promising concept for producing extremely high specific impulse rocket engines. Engines such as these would effectively open up the solar system to human exploration and would virtually eliminate launch window restrictions. A preliminary vehicle sizing and mission study was performed based on the conceptual design of
Emrich, William J., Kammash, Terry B.
openaire +2 more sources
Cavitation of a Propeller and Influence of an Wake Equalizing Duct [PDF]
TransNav, 2015 The wake equalizing duct (WED) is one of the most commonly used energy saving devices for improving the propulsion performance of a ship; and reducing the propeller-excited vibrations and viscous resistance forces.
George Martinas
doaj +1 more source
Research on Optimization Design of Fully Parameterized Pump-Jet Propulsion
Journal of Marine Science and Engineering, 2022 A pump-jet propulsion system is composed of rotor, stator, and duct. The stator has the front stator type and the rear stator type; the conduit also has the acceleration conduit and the deceleration conduit two forms.
Chunxiao Wu +6 more
doaj +1 more source
Experimental analysis of the effect of dynamic induction control on a wind turbine wake [PDF]
Wind Energy Science, 2022 Dynamic induction control (DIC) has proven to be an effective method of increasing the power output for a wind farm in both simulation studies and wind tunnel experiments.
D. van der Hoek +5 more
doaj +1 more source
Displaced geostationary orbits using hybrid low-thrust propulsion [PDF]
, 2012 In this paper, displaced geostationary orbits using hybrid low-thrust propulsion, a complementary combination of Solar Electric Propulsion (SEP) and solar sailing, are investigated to increase the capacity of the geostationary ring that is starting to ...
Biggs, James +13 more
core +1 more source
Application of Steady and Unsteady Detonation Waves to Propulsion [PDF]
, 2004 The present work investigates the applications of steady and unsteady detonation waves to air-breathing propulsion systems. The efficiency of ideal detonation-based propulsion systems is first investigated based on thermodynamics.
Wintenberger, Eric
core +1 more source
Effects of Regular Waves on Propulsion Performance of Flexible Flapping Foil
Applied Sciences, 2018 The objective of the present study is to analyze the effects of waves on the propulsive performance and flow field evolution of flexible flapping foil, and then offer a way to take advantage of wave energy.
Peng Liu +4 more
doaj +1 more source