A design method for a quick release mechanism of a ram air turbine retraction actuator

Abstract

The invention discloses a method for designing a quick release mechanism of a retraction actuator of a ram air turbine system based on nonlinear damping adjustment. The method comprises the followingsteps of: 1, setting parameters of a damping hole system, such as position, aperture size and quantity; 2, establishing an RAT system simulation model, and filling related parameters into the simulation model; 3, simulating release conditions of the devices in batches to obtain corresponding displacement-displacement; A time curve; 4, obtaining the release conditions of the devices with the same position and different apertures to obtain the corresponding displacement-displacement; A time curve; and 5, obtaining corresponding displacement-corresponding device release conditions with the same aperture and different positions, and obtaining the corresponding displacement-corresponding device release conditions. A time curve; 6, selecting corresponding damping hole system parameters with short release time and good buffer effect, including position, aperture size and number, as a design result of a quick release mechanism of the retractable actuator; By means of the steps, the rapid release of the initial release process and the hydraulic buffer effect of the final release process are fully considered, and safe and rapid release of the ram air turbine system can be achieved.

Description

technical field [0001] The invention provides a design method for a quick release mechanism of a ram air turbine retractable actuator, which relates to a design method for a quick release mechanism of a ram air turbine retractable actuator based on nonlinear damping adjustment, belonging to the ram air turbine (RAT) design field. Background technique [0002] The RAT system is called the "last straw" of the aircraft. Its main function is to provide emergency energy to the aircraft when the aircraft loses all active power and auxiliary power, so as to ensure that the aircraft can still be controlled in an emergency state. [0003] The RAT retractable actuator relies on the spring compression force stored by itself to quickly release and deploy the RAT to the working position. During the release process, through the pressure-flow control of the oil in the cavity, the nonlinear damping inside the retractable actuator is completed. Adjustment, so that the hydraulic buffer effec...

AI Technical Summary

Problems solved by technology

The pressure-flow control of the oil in the retractable actuator cavity mainly depends on the adjustment of the damping hole. The traditional damping design method of the actuator is often obtained through experience, and it is difficult to obtain the optimal result according to different operating conditions.

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