cross-flow valve

A valve meant to bypass hydraulic fluid from the landing gear upline to the downline when the landing gear is being extended. The weight of the landing gear, when it is released, is so great that it falls very rapidly. Under these conditions, hydraulic fluid cannot fill the space behind the moving piston in the landing-gear actuating cylinder; hence, pressure is increased in the upline and on the opposite side of the piston. By having a cross-flow valve in the system, fluid is permitted to flow from the upside of the piston to the downside and thus allow the landing gear to drop with an even motion and with more ease. Cross-flow valves may be manually or automatically operated. The former is used only during the emergency operation of the landing gear, whereas the latter is used for the normal operation of landing gear.

单词	cross-flow valve
释义	cross-flow valve cross-flow valve A valve meant to bypass hydraulic fluid from the landing gear upline to the downline when the landing gear is being extended. The weight of the landing gear, when it is released, is so great that it falls very rapidly. Under these conditions, hydraulic fluid cannot fill the space behind the moving piston in the landing-gear actuating cylinder; hence, pressure is increased in the upline and on the opposite side of the piston. By having a cross-flow valve in the system, fluid is permitted to flow from the upside of the piston to the downside and thus allow the landing gear to drop with an even motion and with more ease. Cross-flow valves may be manually or automatically operated. The former is used only during the emergency operation of the landing gear, whereas the latter is used for the normal operation of landing gear.
随便看	realtor association of greater miami and the beaches realtor association of martin county realtor association of miami dade county realtor association of northwest chicagoland realtor association of pioneer valley realtor association of the fox valley realtor certified executive realtor-client communication gateway realtor of the year realtor political action committee realtors realtors assistance to members program realtors association of edmonton realtors association of hamilton-burlington realtors association of indian river county realtors association of new mexico realtors association of northeast wisconsin realtors association of southwest wisconsin realtors association of the palm beaches realtors association of york and adams county realtors for safe neighborhoods realtors land institute realtors multiple listing and information service realtors national marketing institute real total expense ratio