Patent ID: 9429076
Filing Date: 2016-08-30
CPC Classification: B64C,B64D,F02C,F28D,F28F,Y02T

Claim Text:
1. A turboprop-powered medium altitude long endurance aircraft, comprising: a gas turbine engine configured for providing propulsion power to an aircraft propeller; a heat scavenging apparatus configured for scavenging heat from the gas turbine engine; a heating apparatus comprising a first heat exchanger; a recirculating air path; a further heat exchanger in the recirculating air path; wherein the first heat exchanger is arranged to use the scavenged heat to heat air in the recirculating air path; the further heat exchanger comprises a heat-storage material having a melting point selected so as to be rendered solid when cooling and is arranged to cool air recirculating around the recirculation air path; and the recirculating air path is arranged to provide cooling and/or heating to the turboprop-powered medium altitude long endurance aircraft.