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NASA-TN-D-318
A wind-tunnel investigation of three propellers through an angle-of-attack range from 0 deg to 85 deg
Year: 1960
Abstract: An investigation of propeller performance, including in-plane forces and out-of-plane moments, has been made for three propellers operating through a range of thrust-ads angles of attack from O° (horizontal) to 85°. The operating conditions were selected to simulate those anticipated for VTOL/STOL aircraft in the take-off, landing, and transition regimes. The propellers differed widely in plan form and included one with flapping hinges.
The results of the investigation revealed that for all three propellers similar variations in the forces and moments with thrust-axis angle of attack and advance ratio were present. Further, the thrust and power were nearly constant and in-plane forces and out-of-plane moments increased approximately linearly over large ranges of thrust-axis angle of attack for constant blade angles and effective advance ratios.
The results of the investigation revealed that for all three propellers similar variations in the forces and moments with thrust-axis angle of attack and advance ratio were present. Further, the thrust and power were nearly constant and in-plane forces and out-of-plane moments increased approximately linearly over large ranges of thrust-axis angle of attack for constant blade angles and effective advance ratios.
Subject: AERODYNAMIC
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| contributor author | NASA - National Aeronautics and Space Administration (NASA) | |
| date accessioned | 2017-09-04T17:48:45Z | |
| date available | 2017-09-04T17:48:45Z | |
| date copyright | 01/01/1960 | |
| date issued | 1960 | |
| identifier other | ERTKAEAAAAAAAAAA.pdf | |
| identifier uri | http://yse.yabesh.ir/std/handle/yse/171857 | |
| description abstract | An investigation of propeller performance, including in-plane forces and out-of-plane moments, has been made for three propellers operating through a range of thrust-ads angles of attack from O° (horizontal) to 85°. The operating conditions were selected to simulate those anticipated for VTOL/STOL aircraft in the take-off, landing, and transition regimes. The propellers differed widely in plan form and included one with flapping hinges. The results of the investigation revealed that for all three propellers similar variations in the forces and moments with thrust-axis angle of attack and advance ratio were present. Further, the thrust and power were nearly constant and in-plane forces and out-of-plane moments increased approximately linearly over large ranges of thrust-axis angle of attack for constant blade angles and effective advance ratios. | |
| language | English | |
| title | NASA-TN-D-318 | num |
| title | A wind-tunnel investigation of three propellers through an angle-of-attack range from 0 deg to 85 deg | en |
| type | standard | |
| page | 81 | |
| status | Active | |
| tree | NASA - National Aeronautics and Space Administration (NASA):;1960 | |
| contenttype | fulltext | |
| subject keywords | AERODYNAMIC | |
| subject keywords | AIR | |
| subject keywords | AIRCRAFT | |
| subject keywords | ANGLE | |
| subject keywords | ATTACK | |
| subject keywords | BLADES | |
| subject keywords | CHARACTERISTICS | |
| subject keywords | FLOW | |
| subject keywords | PROPELLER | |
| subject keywords | PROPELLERS | |
| subject keywords | STOL | |
| subject keywords | TESTS | |
| subject keywords | TUNNEL | |
| subject keywords | WIND |