US 12,488,702 B2
Method of and system for one-engine-inoperative training in aircraft with dissimilar engines
Aaron Alexander Acee, Highland Village, TX (US); Timothy McClellan Mosig, Richland Hills, TX (US); and Michael Seifert, Southlake, TX (US)
Assigned to Textron Innovations Inc., Providence, RI (US)
Filed by Bell Textron Inc., Fort Worth, TX (US)
Filed on Jul. 19, 2021, as Appl. No. 17/378,980.
Prior Publication US 2023/0019379 A1, Jan. 19, 2023
Int. Cl. G09B 9/18 (2006.01); B64C 27/00 (2006.01); B64C 27/12 (2006.01); B64D 31/12 (2006.01); G09B 9/08 (2006.01)
CPC G09B 9/18 (2013.01) [B64C 27/006 (2013.01); B64C 27/12 (2013.01); B64D 31/12 (2013.01); G09B 9/08 (2013.01)] 17 Claims
OG exemplary drawing
 
1. A method of simulating a one-engine inoperative (“OEI”) event in a multi-engine aircraft that does not employ identical engines, the method comprising:
operating a supplemental power unit (“SPU”) at a first SPU power level less than an SPU contingency power rating, wherein the SPU contingency power rating is a power level after which the SPU must be inspected to assess a need for an overhaul of the SPU;
operating a primary engine at a first primary-engine power level;
simulating the OEI inoperative event by reducing the primary-engine power level to less than the first primary-engine power level; and
maintaining a sum of the primary-engine power level and the SPU power level at a power level substantially equal to the SPU contingency power rating.