ALEXANDRIA, Va., Dec. 16 -- United States Patent no. 12,497,906, issued on Dec. 16, was assigned to SAFRAN AERO BOOSTERS (Herstal, Belgium).
"Tandem stator" was invented by Julien Marande (Herstal, Belgium) and Remy Henri Pierre Princivalle (Herstal, Belgium).
According to the abstract* released by the U.S. Patent & Trademark Office: "A stator assembly including an upstream blade and a downstream blade axially overlapping and defining between them a channel. The inlet surface of the channel is greater than or equal to the outlet surface of the channel, preferably with a factor of 2. A turbomachine provided with such an assembly, arranged upstream of a high-pressure compressor."
The patent was filed on March 1, 2023, under Application No....