NASA goes low-tech to fix high-tech problem
To fix a potentially fatal shaking problem on its snazzy new moon rocket, NASA is considering something that works for mud-stained pickups: heavy-duty shock absorbers. For nearly half a year, NASA's No. 1 technical problem in designing its Ares I rocket, which will eventually propel astronauts back to the moon, has been a sound wave vibration problem from its solid rocket motors. If the vibrations hit the right frequency, they could shake the astronauts to death -- or at the least make it impossible for them to work. The astronauts would be in the Orion crew capsule launched on top of the Ares. The leading solution is to put weight on springs in parts of the bottom end of the rocket and underneath astronauts' seats to dampen the vibrations. Think MacPherson struts, said Garry Lyles, who heads a NASA team working on the problem. "These are actually absorbers that are used in vehicles today, especially 1-ton and 1 |
