specific thrust वाक्य
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- By contrast, military turbofans often feature fairly high specific thrust ( 45-110 lbf / ( lb / s ) ), which keeps the cross-sectional area of the engine low to more easily accommodate a narrow fuselage, which minimizes drag.
- On a civil engine, jet noise considerations mean that any significant increase in take-off thrust must be accompanied by a corresponding increase in fan mass flow ( to maintain a T / O specific thrust of about 30 lbf / lb / s ).
- The slower average velocity of the mixed exhaust air ( low specific thrust ) is also less wasteful of energy for subsonic flight, and allows the engine to be more efficient and much quieter, while the fan also allows greater thrust to be available at slow speeds.
- "' Specific thrust "'is a term used in gas turbine engineering to show the relative bulk of a jet engine ( e . g . turbojet, turbofan, etc . ) and is defined as the ratio : net thrust / total intake airflow.
- A modern civil turbofan has a low specific thrust ( ~ 30 lbf / ( lb / s ) ) to keep the jet noise at an acceptable level, and to achieve low fuel consumption, because a low specific thrust helps to improve specific fuel consumption ( SFC ).
- A modern civil turbofan has a low specific thrust ( ~ 30 lbf / ( lb / s ) ) to keep the jet noise at an acceptable level, and to achieve low fuel consumption, because a low specific thrust helps to improve specific fuel consumption ( SFC ).
- To illustrate one aspect of how a turbofan differs from a turbojet they may be compared, as in a re-engining assessment, at the same airflow ( to keep a common intake for example ) and the same net thrust ( i . e . same specific thrust ).
- The next generation of Supersonic transport ( SST ) may require some form of VCE . SST engines require a high specific thrust ( net thrust / airflow ) at supersonic cruise to keep the cross-sectional area of the powerplant to a minimum, so as to reduce aircraft drag.
- The International Chiropractor's Association ( ICA ) states that the " chiropractic spinal adjustment is unique and singular to the chiropractic profession ", and that it " is characterized by a specific thrust applied to the vertebra utilizing parts of the vertebra and contiguous structures as levers to directionally correct articular malposition.
- Specific thrust has significant bearing on thrust lapse rate : the low jet velocity associated with a low specific thrust engine implies that there are large reductions in net thrust with increasing flight velocity, which can only be partially offset by throttle changes at rated conditions ( e . g . maximum recommended climb rating ).
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