Patent ID: 11920512
Assignee: AEROVIRONMENT, INC.
Field: Engines, pumps, turbines (Mechanical engineering)
Classification: CPC F  B  Y | IPC F

Claim 17:
18. A method of restarting an engine that is configured to react a first reactant with a gaseous stream of second reactant to produce energy and an exhaust stream, the engine being configured for use in a range of ambient conditions, wherein the gaseous stream of second reactant is provided to the engine at a flow rate, wherein the engine is provided with a compressor and a turbine, wherein the compressor is configured to pressurize the gaseous stream of second reactant supplied to the engine and a turbine, wherein the compressor is driven in rotation by a driving force from the turbine, and wherein the turbine is propelled by the exhaust stream, comprising:
monitoring a parameter of the group of parameters consisting of an altitude at which the engine is operating, and a temperature at which the engine is operating;
operating an afterburner that reacts reactants in the exhaust stream intermediate the engine and the turbine during a restart of the engine, such that the compressor is driven at a speed that provides for the gaseous stream of second reactant to be provided to the engine at a flow rate at or above a threshold level that is dependent upon the monitored parameter.