US 11,732,698 B1
Ram air turbine deployment actuator heater
Scott J. Marks, Oregon, IL (US)
Assigned to HAMILTON SUNDSTRAND CORPORATION, Charlotte, NC (US)
Filed by Hamilton Sundstrand Corporation, Charlotte, NC (US)
Filed on Aug. 8, 2022, as Appl. No. 17/882,814.
Int. Cl. F03G 7/06 (2006.01); B64D 41/00 (2006.01)
CPC F03G 7/06112 (2021.08) [B64D 41/007 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A ram air turbine deployment actuator assembly comprising:
an actuator housing that defines a hydraulic fluid cavity, the hydraulic fluid cavity housing a hydraulic fluid; and
a heating member positioned proximal to the hydraulic fluid cavity of the actuator housing;
wherein the heating member is configured to increase a temperature of the hydraulic fluid to decrease a viscosity of the hydraulic fluid before or during deployment of a ram air turbine via the ram air turbine deployment actuator assembly; and
wherein the heating member is associated with a temperature sensor inserted or positioned into the hydraulic fluid cavity of the actuator housing.