درباره ما
NACA-TN-1951
Method of determining conditions of maximum efficiency of an independent turbine-propeller combination
Year: 1949
Abstract: The characteristics of a turbine and a propeller were investigated to determine the conditions of maximum-efficiency operation when utilized as an independent turbine-propeller combination. The procedure used to determine the conditions of maximum efficiency and the speed ratio between the turbine and the propeller is illustrated. This procedure involved the use of a method of matching turbines and propellers.
By the use of this method, the conditions for maximum-efficiency operation can be defined by turbine-inlet temperature, pressure ratio, and propeller speed for each flight condition. The relation between these parameters is adaptable to independent control of turbine-propeller speed when interaction between the turbine-propeller combination and the gas generator is either nonexistent or when the effects of interaction can be sufficiently damped.
By the use of this method, the conditions for maximum-efficiency operation can be defined by turbine-inlet temperature, pressure ratio, and propeller speed for each flight condition. The relation between these parameters is adaptable to independent control of turbine-propeller speed when interaction between the turbine-propeller combination and the gas generator is either nonexistent or when the effects of interaction can be sufficiently damped.
Show full item record
| contributor author | NASA - National Aeronautics and Space Administration (NASA) | |
| date accessioned | 2017-09-04T16:33:31Z | |
| date available | 2017-09-04T16:33:31Z | |
| date copyright | 01/01/1949 | |
| date issued | 1949 | |
| identifier other | UUONEEAAAAAAAAAA.pdf | |
| identifier uri | https://yse.yabesh.ir/std/handle/yse/96944 | |
| description abstract | The characteristics of a turbine and a propeller were investigated to determine the conditions of maximum-efficiency operation when utilized as an independent turbine-propeller combination. The procedure used to determine the conditions of maximum efficiency and the speed ratio between the turbine and the propeller is illustrated. This procedure involved the use of a method of matching turbines and propellers. By the use of this method, the conditions for maximum-efficiency operation can be defined by turbine-inlet temperature, pressure ratio, and propeller speed for each flight condition. The relation between these parameters is adaptable to independent control of turbine-propeller speed when interaction between the turbine-propeller combination and the gas generator is either nonexistent or when the effects of interaction can be sufficiently damped. | |
| language | English | |
| title | NACA-TN-1951 | num |
| title | Method of determining conditions of maximum efficiency of an independent turbine-propeller combination | en |
| type | standard | |
| page | 21 | |
| status | Active | |
| tree | NASA - National Aeronautics and Space Administration (NASA):;1949 | |
| contenttype | fulltext |