公开(公告)号：US20240351677A1

公开(公告)日：2024-10-24

申请号：US18683023

申请日：2022-08-10

Applicant: Raytheon Company

Inventor： David D. Staggers

IPC: B64C9/02 ,  F16C33/10 ,  F16C37/00

CPC classification number: B64C9/02 ,  F16C33/1005 ,  F16C33/1045 ,  F16C33/109 ,  F16C37/00

Abstract: A bearing system for a control surface of a high speed flight vehicle includes a bearing configured to support the control surface, and a pressurized lubricant chamber containing a lubricant for the bearing. The lubricant contained in the lubricant chamber is in a first phase. The lubricant chamber is subject to heating by a heated aerothermal environment (an environment external to the high speed flight vehicle). The lubricant in the first phase, therefore, is configured to transition from the first phase to a second phase when the lubricant chamber is heated by the heated aerothermal environment. The lubricant in the second phase is configured to flow from the lubricant chamber to the bearing to lubricate and cool the bearing via a flow-based cooling effect.

公开(公告)号：US20170356473A1

公开(公告)日：2017-12-14

申请号：US15689265

申请日：2017-08-29

Applicant: Raytheon Company

Inventor： David D. Staggers

IPC: F15B15/10 ,  F15B15/19 ,  B64C13/36 ,  F42B10/64

CPC classification number: F15B15/103 ,  B64C13/36 ,  F15B15/19 ,  F15B2211/715 ,  F15B2211/853 ,  F15B2211/8606 ,  F42B10/64

Abstract: A pneumatic artificial muscle (PAM) actuator includes first and second end caps, an elastic bladder connected to the end caps, and a covering around the elastic bladder and connected to the end caps. At least one of the first and second end caps is configured to move and narrow a distance between the end caps in response to inflation of the elastic bladder by a fluid. At least one of the end caps includes a vent configured to allow the fluid to exit the elastic bladder and collapse the covering after activation of the PAM actuator. At least the covering is configured to provide braking for the PAM actuator. The covering may be configured to collapse at least partially between the first and second end caps to provide at least some of the braking for the PAM actuator.