درباره ما
NASA-TN-D-8252
Friction characteristics of 20 x 4.4, type 7, aircraft tires constructed with different tread rubber compounds
Year: 1976
Abstract: A test program was conducted at the Langley aircraft landing loads and traction facility to evaluate the friction characteristics of 20 x 4.4, type, aircraft tires constructed with experimental cut-resistant, tread rubber compounds. These compounds consisted of different blends of natural rubber (NR) and an alfin catalyzed styrene-butadiene copolymer rubber (SBR). One tire having a blend of 30 SBR and 70 NR and another having a blend of 60 SBR and 40 NR in the tread were tested together with a standard production tire with no SBR content in the tread rubber. The results of this investigation indicated that the test tires constructed with the special cut-resistant tread rubber compositions did not suffer any significant degradation in tire friction capability when compared with the standard tire. In general, tire friction capability decreased with increasing speed and surface wetness condition. As yaw angle increased, tire braking capability decreased while tire cornering capability increased. Tread-wear data based on number of brake cycles, however, suggested that the tires with alfin SBR blends experienced significantly greater wear than the standard production tire.
Subject: AIRCRAFT TIRES
Show full item record
| contributor author | NASA - National Aeronautics and Space Administration (NASA) | |
| date accessioned | 2017-09-04T18:36:47Z | |
| date available | 2017-09-04T18:36:47Z | |
| date copyright | 01/01/1976 | |
| date issued | 1976 | |
| identifier other | JMBBFEAAAAAAAAAA.pdf | |
| identifier uri | http://yse.yabesh.ir/std;query=autho9216AF6769B752731854DD6EFDEC014A/handle/yse/218774 | |
| description abstract | A test program was conducted at the Langley aircraft landing loads and traction facility to evaluate the friction characteristics of 20 x 4.4, type, aircraft tires constructed with experimental cut-resistant, tread rubber compounds. These compounds consisted of different blends of natural rubber (NR) and an alfin catalyzed styrene-butadiene copolymer rubber (SBR). One tire having a blend of 30 SBR and 70 NR and another having a blend of 60 SBR and 40 NR in the tread were tested together with a standard production tire with no SBR content in the tread rubber. The results of this investigation indicated that the test tires constructed with the special cut-resistant tread rubber compositions did not suffer any significant degradation in tire friction capability when compared with the standard tire. In general, tire friction capability decreased with increasing speed and surface wetness condition. As yaw angle increased, tire braking capability decreased while tire cornering capability increased. Tread-wear data based on number of brake cycles, however, suggested that the tires with alfin SBR blends experienced significantly greater wear than the standard production tire. | |
| language | English | |
| title | NASA-TN-D-8252 | num |
| title | Friction characteristics of 20 x 4.4, type 7, aircraft tires constructed with different tread rubber compounds | en |
| type | standard | |
| page | 29 | |
| status | Active | |
| tree | NASA - National Aeronautics and Space Administration (NASA):;1976 | |
| contenttype | fulltext | |
| subject keywords | AIRCRAFT TIRES | |
| subject keywords | CONCENTRATION (COMPOSITION) | |
| subject keywords | FRICTION | |
| subject keywords | STANDARDS | |
| subject keywords | SYNTHETIC RUBBERS | |
| subject keywords | WEAR |