Congress forcing a compromise(d) Space Shuttle design on NASA. Among other things, the space shuttle was the first human space vehicle to use solid rocket boosters. Solid rocket boosters were previously deemed unsafe for human space flight because once they're lit, they don't stop boosting until the fuel is gone. Liquid-fueled rockets can be shut off.
Definition of conductive. : having conductivity : relating to conduction (as of electricity)
1 Ionic conductivity, a measure of the conductivity through ionic charge carriers. 2  Hydraulic conductivity, a property of a porous material's ability to transmit water.  Thermal conductivity, the intensive property of a material that indicates its ability to conduct heat.