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NASA-TN-D-405
Investigation of tandem-wheel and air-jet arrangements for improving braking friction on wet surfaces
| contributor author | NASA - National Aeronautics and Space Administration (NASA) | |
| date accessioned | 2017-09-04T16:16:16Z | |
| date available | 2017-09-04T16:16:16Z | |
| date copyright | 01/01/1960 | |
| date issued | 1960 | |
| identifier other | SZHOEEAAAAAAAAAA.pdf | |
| identifier uri | http://yse.yabesh.ir/std/handle/yse/79555 | |
| description abstract | In an attempt to improve tire braking characteristics on wet surfaces at high speeds, preliminary tests were made on a tire treadmill to determine the effectiveness of two methods of clearing away water ahead of a braking wheel. One method consisted of mounting a free-rolling or idling wheel ahead of a braking wheel, and the other method consisted of directing an air jet on the water-covered surface ahead of a braking wheel. Tests were made with smooth and diamond-treaded 3.00 X 7 tires (about 12 inches in diameter) on the braking wheel and a smooth 3.00 X 7 tire on the idling wheel. In the blowing tests, two nozzles having different diameters were used with air-jet pressures up to about 100 pounds per square inch. Measurements of tire friction coefficients were made with 0.09 inch of water on the belt of the treadmill over a range of speeds from 26 to 93 feet per second. | |
| language | English | |
| title | NASA-TN-D-405 | num |
| title | Investigation of tandem-wheel and air-jet arrangements for improving braking friction on wet surfaces | en |
| type | standard | |
| page | 21 | |
| status | Active | |
| tree | NASA - National Aeronautics and Space Administration (NASA):;1960 | |
| contenttype | fulltext | |
| subject keywords | AIR JETS | |
| subject keywords | AIRCRAFT BRAKES | |
| subject keywords | AIRCRAFT TIRES | |
| subject keywords | BRAKING | |
| subject keywords | COEFFICIENT OF FRICTION | |
| subject keywords | HIGH SPEED | |
| subject keywords | IDLERS | |
| subject keywords | LANDING GEAR | |
| subject keywords | NOZZLE GEOMETRY | |
| subject keywords | RUNWAY CONDITIONS | |
| subject keywords | SLIDING FRICTION | |
| subject keywords | SURFACE PROPERTIES | |
| subject keywords | WATER | |
| subject keywords | WETTING | |
| subject keywords | WHEEL BRAKES |
