US 11,732,639 B2
Mechanical disconnects for parallel power lanes in hybrid electric propulsion systems
Eric LaTulipe, Sainte-Julie (CA); Jean Thomassin, Ste Julie (CA); Todd A. Spierling, Rockford, IL (US); and Robert A. Bayles, Belvidere, IL (US)
Assigned to PRATT & WHITNEY CANADA CORP., Longueuil (CA)
Filed by Pratt & Whitney Canada Corp., Longueuil (CA)
Filed on Dec. 9, 2019, as Appl. No. 16/707,587.
Claims priority of provisional application 62/820,064, filed on Mar. 18, 2019.
Claims priority of provisional application 62/812,474, filed on Mar. 1, 2019.
Prior Publication US 2022/0324582 A1, Oct. 13, 2022
Int. Cl. F02C 7/36 (2006.01); F02B 41/10 (2006.01); B64D 27/10 (2006.01); B64D 27/24 (2006.01); B64D 35/08 (2006.01); B64D 27/02 (2006.01); F01D 15/10 (2006.01); F02B 37/10 (2006.01)
CPC F02B 41/10 (2013.01) [B64D 27/10 (2013.01); B64D 27/24 (2013.01); B64D 35/08 (2013.01); F02C 7/36 (2013.01); B64D 2027/026 (2013.01); F01D 15/10 (2013.01); F02B 37/105 (2013.01)] 3 Claims
OG exemplary drawing
 
2. A hybrid propulsion system comprising:
a heat engine configured to drive a heat engine shaft;
an electric motor configured to drive a motor shaft; and
a transmission system including at least one gear box, wherein the transmission system is configured to receive rotational input power from each of the heat engine shaft and the motor shaft and to convert the rotational input power to output power, wherein the heat engine shaft and the motor shaft are combined as a single common shaft connected to the transmission system, wherein the electric motor includes a first disconnect mechanism within the electric motor to allow the heat engine to rotate with the electric motor stopped and wherein the single common shaft includes a second disconnect mechanism between the electric motor and the heat engine to allow the electric motor to rotate with the heat engine stopped.