درباره ما
NASA-TM-81745
Low and high speed propellers for general aviation - Performance potential and recent wind tunnel test results
| contributor author | NASA - National Aeronautics and Space Administration (NASA) | |
| date accessioned | 2017-09-04T17:50:41Z | |
| date available | 2017-09-04T17:50:41Z | |
| date copyright | 01/01/1981 | |
| date issued | 1981 | |
| identifier other | EXHOEEAAAAAAAAAA.pdf | |
| identifier uri | http://yse.yabesh.ir/std/handle/yse/173896 | |
| description abstract | The performance of lower speed, 5 foot diameter model general aviation propellers, was tested in the Lewis wind tunnel. Performance was evaluated for various levels of airfoil technology and activity factor. The difference was associated with inadequate modeling of blade and spinner losses for propellers round shank blade designs. Suggested concepts for improvement are: (1) advanced blade shapes (airfoils and sweep); (2) tip devices (proplets); (3) integrated propeller/nacelles; and (4) composites. Several advanced aerodynamic concepts were evaluated in the Lewis wind tunnel. Results show that high propeller performance can be obtained to at least Mach 0.8. | |
| language | English | |
| title | NASA-TM-81745 | num |
| title | Low and high speed propellers for general aviation - Performance potential and recent wind tunnel test results | en |
| type | standard | |
| page | 32 | |
| status | Active | |
| tree | NASA - National Aeronautics and Space Administration (NASA):;1981 | |
| contenttype | fulltext | |
| subject keywords | AERODYNAMIC CONFIGURATIONS | |
| subject keywords | AERONAUTICAL ENGINEERING | |
| subject keywords | AIRFOILS | |
| subject keywords | FUEL CONSUMPTION | |
| subject keywords | POWER EFFICIENCY | |
| subject keywords | PROPELLER BLADES | |
| subject keywords | PROPELLER EFFICIENCY | |
| subject keywords | TURBOPROP AIRCRAFT | |
| subject keywords | WIND TUNNEL TESTS |
