ALEXANDRIA, Va., April 15 -- United States Patent no. 12,601,277, issued on April 14, was assigned to MTU Aero Engines AG (Munich).
"Turbfan engine" was invented by Jens Truebenbach (Munich) and Jan Von Frowein (Dachau, Germany).
According to the abstract* released by the U.S. Patent & Trademark Office: "A turbofan engine with a low-pressure turbine module having no more than four stages and a fan coupled to the low-pressure turbine module via a gearbox, the turbofan engine having a maximum thrust of at least 70 kN and at most 300 kN, and the low-pressure turbine module (4.2) having a ratio of the exit annulus area to the inlet annulus area, Aout/Ain, of at least 2.2 and at most 3.3."
The patent was filed on Dec. 12, 2023, under Applicat...