SPOILING APPARATUS FOR TRIGGERING TURBULENT TRANSITION BY AUTONOMOUS DISTURBANCE AND SPOILERS

WIPO Patent Application WO/2020/042351

A1

A spoiling apparatus for triggering a turbulent transition by autonomous disturbance and spoilers (3). The spoilers (3) are mounted in multiple grooves (2) in the circumferential direction of a navigating body, when a flow autonomously undergoes a turbulent transition, the spoilers (3) remain in the grooves (2), the surface of the navigating body is free of protrusion, thus causing no additional flow resistance. A rated critical Reynolds number is set, in a case of a reduced flow speed and reduced density, the flow is a laminar flow, at which time the pressure applied to the spoilers (3) by the flow is reduced, and the spoilers (3) are ejected under the effect of compression springs (4). When ejected, the spoilers (3) disturb the flowing of the bottom layer of the flow, and trigger the laminar flow into a turbulent flow. By setting the rebounding force of the compression springs (4), the spoiling apparatus is turned on automatically when a disturbance-triggered turbulent transition is required and is turned off when not required, thus implementing the autonomous control of turbulent transitions.

LU HONGZHI (CN)
ZHAO JING (CN)
LIU LILI (CN)
HUI JUNPENG (CN)
LIU MINHUA (CN)
ZHAO MIN (CN)
KANG LEIJING (CN)
ZHAO YUE (CN)
LI YIFAN (CN)

PCT/CN2018/113737

March 05, 2020

November 02, 2018

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CN ACADEMY LAUNCH VEHICLE TECH (CN)

B63B1/32; B63B1/36

CN102758728A	2012-10-31
CN102758728A	2012-10-31
CN107600354A	2018-01-19
CN106542046A	2017-03-29
CN102501942A	2012-06-20
CN104260823A	2015-01-07
CN103204186A	2013-07-17
US20100266382A1	2010-10-21

PATENT AGENT OF CHINA AEROSPACE TECHNOLOGY (CN)

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