US 11,807,378 B2
Alternating starter use during multi-engine motoring
David Gelwan, Glastonbury, CT (US); Jesse W. Clauson, Agawam, MA (US); and Frederick M. Schwarz, Glastonbury, CT (US)
Assigned to RTX CORPORATION, Farmington, CT (US)
Filed by RTX CORPORATION, Farmington, CT (US)
Filed on Mar. 25, 2020, as Appl. No. 16/829,172.
Application 16/829,172 is a continuation of application No. 15/652,692, filed on Jul. 18, 2017, granted, now 10,633,106.
Claims priority of provisional application 62/365,097, filed on Jul. 21, 2016.
Prior Publication US 2020/0239151 A1, Jul. 30, 2020
Int. Cl. F01D 19/02 (2006.01); B64D 31/12 (2006.01); F02C 9/00 (2006.01); F02C 7/27 (2006.01); F02C 7/277 (2006.01); F02C 9/18 (2006.01); F02C 7/26 (2006.01); F02C 7/268 (2006.01); F02C 7/275 (2006.01)
CPC B64D 31/12 (2013.01) [F01D 19/02 (2013.01); F02C 7/27 (2013.01); F02C 7/277 (2013.01); F02C 9/00 (2013.01); F02C 9/18 (2013.01); F02C 7/26 (2013.01); F02C 7/268 (2013.01); F02C 7/275 (2013.01); F05D 2220/323 (2013.01); F05D 2220/50 (2013.01); F05D 2240/40 (2013.01); F05D 2260/85 (2013.01); F05D 2270/304 (2013.01)] 12 Claims
OG exemplary drawing
 
1. A system for alternating starter use during multi-engine motoring in an aircraft, the system comprising:
a first engine starting system of a first engine; and
a first controller in communication with a second controller that controls a second engine starting system of a second engine, the first controller being configured to intermittently direct power to the first engine starting system to alternately accelerate and decelerate the first engine during motoring with respect to the second engine based on one or more adjustments to a baseline dry motoring profile to shift timing between the first engine and the second engine.