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)
conductance. ability to conduct or transmit, as electricity or other energy or material. airway conductance in studies of respiration, an expression of the amount of air reaching the alveoli per unit of time per unit of pressure, the reciprocal of airway resistance.