Patent ID: 8978353
Filing Date: 2015-03-17
Classification: B64D

Abstract:
1. A method for rejecting waste heat produced by one or more operating systems carried on an aircraft, the method comprising: supplying an endothermic fuel flow from an endothermic fuel reserve contained in a fuel reservoir, the endothermic fuel comprising an effective amount of branched alkanes so that the endothermic fuel achieves a net endothermic effect when the branched alkanes undergo endothermic catalytic cracking; bringing the endothermic fuel flow into thermal communication with one or more operating systems that generate waste heat while performing their intended functions during operation of the aircraft; and exposing the endothermic fuel flow to a cracking catalyst that comprises a superacid operative to catalytically crack the branched alkanes present in the endothermic fuel at a reaction temperature between about 20° C. to about 80° C., the superacid being present in an amount to drive cracking of the branched alkanes and to increase a heat sink capacity of the endothermic fuel flow at the reaction temperature.