Pratt & whitney canada corp. (20240426241). METHOD FOR MAPPING CONTRAIL FORMATION TO ENGINE PERFORMANCE CHARACTERISTICS
Contents
METHOD FOR MAPPING CONTRAIL FORMATION TO ENGINE PERFORMANCE CHARACTERISTICS
Organization Name
Inventor(s)
Russell Stratton of Toronto (CA)
METHOD FOR MAPPING CONTRAIL FORMATION TO ENGINE PERFORMANCE CHARACTERISTICS
This abstract first appeared for US patent application 20240426241 titled 'METHOD FOR MAPPING CONTRAIL FORMATION TO ENGINE PERFORMANCE CHARACTERISTICS
Original Abstract Submitted
a computer system includes a processor controls the computer system to perform a computer-implemented method of determining a minimum humidity required for formation and persistence of contrails produced by an engine of an aircraft. the computer-implemented method includes determining engine performance model parameters of the engine at desired operating conditions with zero humidity; determining additional energy flow out of the engine; and determining an exhaust plume temperature scaling factor. the method further comprises determining a contrail engine efficiency parameter (noverall_�) based on additional energy flow out of the engine and the exhaust plume temperature scaling factor; and generating an improved schmidt-appleman equation based on the contrail engine efficiency parameter (noverall_�). the method further includes determining an improved mixing line slope based on the improved schmidt-appleman equation; and determining the minimum humidity required for formation and persistence of contrails produced by the engine based on the improved mixing line slope.
