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NASA-TN-D-8210
An experimental and analytical investigation of the effect on isolated boattail drag of varying Reynolds number up to 130,000,000
Year: 1976
Abstract: An investigation was conducted to determine whether large Reynolds number effects occur on isolated boattails, including an analytical study and tests in a 1/3-meter transonic cryogenic tunnel. This investigation was conducted at an angle of attack of 0 deg at Mach numbers from 0.6 to 0.9 for Reynolds numbers up to 130 million. Results indicate that as the Reynolds number was increased, the static pressure coefficients in the expansion region of the boattail became more negative whereas those in the recompression region became more positive. These two trends were compensating and, as a result, there was only a small effect (if any) of Reynolds numbers on boattail pressure drag.
Subject: ANALYSIS
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| contributor author | NASA - National Aeronautics and Space Administration (NASA) | |
| date accessioned | 2017-09-04T16:02:58Z | |
| date available | 2017-09-04T16:02:58Z | |
| date copyright | 01/01/1976 | |
| date issued | 1976 | |
| identifier other | ROYKAEAAAAAAAAAA.pdf | |
| identifier uri | https://yse.yabesh.ir/std/handle/yse/66132 | |
| description abstract | An investigation was conducted to determine whether large Reynolds number effects occur on isolated boattails, including an analytical study and tests in a 1/3-meter transonic cryogenic tunnel. This investigation was conducted at an angle of attack of 0 deg at Mach numbers from 0.6 to 0.9 for Reynolds numbers up to 130 million. Results indicate that as the Reynolds number was increased, the static pressure coefficients in the expansion region of the boattail became more negative whereas those in the recompression region became more positive. These two trends were compensating and, as a result, there was only a small effect (if any) of Reynolds numbers on boattail pressure drag. | |
| language | English | |
| title | NASA-TN-D-8210 | num |
| title | An experimental and analytical investigation of the effect on isolated boattail drag of varying Reynolds number up to 130,000,000 | en |
| type | standard | |
| page | 86 | |
| status | Active | |
| tree | NASA - National Aeronautics and Space Administration (NASA):;1976 | |
| contenttype | fulltext | |
| subject keywords | ANALYSIS | |
| subject keywords | BOATTAILS | |
| subject keywords | CRYOGENIC | |
| subject keywords | DISTRIBUTION | |
| subject keywords | DRAG | |
| subject keywords | EQUIPMENT | |
| subject keywords | EXPERIMENTATION | |
| subject keywords | NUMBER | |
| subject keywords | PREDICTION | |
| subject keywords | PRESSURE | |
| subject keywords | REYNOLDS | |
| subject keywords | STATIC | |
| subject keywords | TECHNIQUES | |
| subject keywords | TRANSONIC | |
| subject keywords | TUNNELS | |
| subject keywords | WIND |