Invention Grant
- Patent Title: Remotely controlled methods and systems for actuating boundary layer transition devices in a wind tunnel model
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Application No.: US15474714Application Date: 2017-03-30
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Publication No.: US10656048B2Publication Date: 2020-05-19
- Inventor: Frederick T. Calkins , Dan J. Clingman , Robert Griffiths
- Applicant: The Boeing Company
- Applicant Address: US IL Chicago
- Assignee: The Boeing Company
- Current Assignee: The Boeing Company
- Current Assignee Address: US IL Chicago
- Agency: Miller, Matthias & Hull LLP
- Main IPC: G01M9/02
- IPC: G01M9/02 ; G01M9/04 ; G01M9/08 ; G01M9/06 ; H02N2/02

Abstract:
A system reproduces aerodynamic boundary layer transition conditions in a wind tunnel test environment under ambient to cryogenic temperature conditions. The system includes a test component disposed in the test environment that defines an exterior surface. A trip dot is mounted on the test component and has a first state, in which a distal surface of the trip dot is at a first elevation relative to the exterior surface of the test component, and a second state, in which the distal surface of the trip dot is at a second elevation relative to the exterior surface of the test component. An actuator is operably coupled to the trip dot and configured to transition the trip dot between first and second states. A controller remotely causes the actuator to transition the trip dot between the first and second states.
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