The information, associates said, related to a metal fuel that scientists believe could propel a variety of vessels _ not just torpedoes _ in oxygenless environments underwater or in space.
12.
Ronald Dittemore, the space agency's shuttle program manager, said officials had approved a plan to weld and polish the hairline cracks found in metal fuel-pipe liners aboard all four shuttles.
13.
Nevertheless the burn rate of MTV, as is the case with many metallized pyrotechnic compositions is strongly dependent on the specific surface area of the metal fuel, that are particle morphology and dimensions.
14.
It is designed, in any emergency, to contain the escape of defence in depth strategy ), the first being the fuel ceramic itself, the second being the metal fuel cladding tubes, the third being the reactor vessel and coolant system.
15.
While metal fuel is not required in APCP, most formulations include at least a few percent as a combustion stabilizer, propellant opacifier ( to limit excessive infrared propellant preheating ), and increase the temperature of the combustion gases ( increasing Isp ).
16.
While performance specs remain consistent for all specific models, some differences may apply to non-American models such as frame and plastic color, metal fuel tank, oil injection, features such as blinker lights, high output coil / stator, battery rack, luggage rack, etc.
17.
The launching of the Atlantis, carrying a crew of six and a 28, 776-pound girder to lengthen the backbone of the station, officially ended the grounding of the four-shuttle fleet caused by small cracks in some metal fuel-system liners that have been repaired.
18.
Ringed by an audience of 20 engineers and safety experts, the 43-year-old craftsman leaned into a 12-inch-wide metal fuel line in the tail section of the shuttle Atlantis at NASA's Kennedy Space Center in Florida over the weekend with his arc welding tools to seal three cracks.
