propulsive efficiency


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propulsive efficiency

propulsive efficiency
Propulsive efficiency of various types of jet engines.
The ratio of propulsive power to the rate of increase of kinetic energy by the gas stream. In reciprocating engines, it is the ratio of the thrust horsepower produced by the propeller to the torque horsepower of the shaft turning the propeller.
References in periodicals archive ?
Our propeller technology will once again provide the Royal Navy with the all-important combination of high propulsive efficiency and low underwater-radiated noise signature to fulfil the essential anti-submarine warfare role of these ships.
The development of a third stream provides an extra source of air flow to improve propulsive efficiency and lower fuel burn, or to deliver additional air flow through the core for higher thrust and cooling air.
Considering the relationship between the performance in swimming and the kinematic variables (FBr, DBr, VN and IB), significant correlations found in this study were with the FBR and is an important component of NV and one of the indicators of the propulsive efficiency.
This increases propulsive efficiency because of a larger total fan area while maintaining a moderate increase in fan diameter and weight.
MT-FAST is a fuel-saving device fitted to the submerged part of a vessel's hull to maximize the vessel's propulsive efficiency, thus resulting in fuel savings.
The deal applied to the complete line-up of Mitsubishi Advanced Propellers (MAP) designed by MHI-MME, including the Mark-W, an advanced model delivering outstanding propulsive efficiency.
This enables a larger engine diameter and thus a higher propulsive efficiency, without resulting in excessively large and heavy engine nacelle.
In contrast, the 737MAX not only has an optimised LEAP-1B engine that needs far less engineering penalties because there is no other engine option, it's lighter weight on the 737MAX itself lends itself to better propulsive efficiency, aerodynamics, performance while delivering better redundancy and increased reliability given the robust but less complex engine design through proven carbon ceramic matrix composites -- components that have high durability to allow high cycle operations.
2010a) have noted strong dependencies, a little bit weaker than in our research (Table 3), between the indices characterizing swimming style such as stroke length, stroke index and propulsive efficiency, despite the fact the indices were calculated in different ways.
Lighthill, 1960) determined what transverse oscillatory movements a slender fish can make, which will give it a high propulsive efficiency.