EntityQ908333· pop 29· linked from 641 articlesauxiliary power unitSign in to savedevice on a vehicle that provides energy for functions other than propulsionConnectionsconstant speed propellerEntityWorld War IIConceptBoeing B-29 SuperfortressEntityflight recorderEntityturbojetEntityflameoutEntityWorld War IConceptInternational Standard Book NumberEntitytankEntityNurembergEntityhelicopterEntitycompassEntityGlobal Positioning SystemEntityvehicleEntityaircraftEntityvoltEntityBoeingPublic companySpace ShuttleEntityAirbus A380EntityhertzEntityCategoriesAircraft auxiliary power unitsAircraft componentsElectrical generatorsStarting systems