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)
Conductor or conduction may refer to: In physics 1  : Electrical conductor, an object allowing the flow of electric charge. 2  Electrical conduction, the movement of charged particles through an electrical conductor.3  Fast ion conductor, a solid-state electrical conductor which conducts due to the movement of ions. Electrical conduction, the movement of charged particles through an electrical conductor. 2  Fast ion conductor, a solid-state electrical conductor which conducts due to the movement of ions. 3  Conduction (heat) , the transfer of thermal energy through matter.