Abstract
The load characteristics for the flow regulator of a solid ducted rocket are discussed in this paper. The mechanism and the influence factor of the load in the flow regulator were studied both theoretically and experimentally, and the system load and the working load were divided according to the mechanism. Additionally, the load influence on the working quality of the flow regulator and the ducted rocket were analyzed. System modeling of the flow regulator was carried out based on the working mechanism of the gas generator and the Stribeck friction model, and models of the actuator, gas generator, and load were built. Furthermore, considering the identification of the model parameters and the inapplicability of the conventional Stribeck identification method to the flow regulator, a new Stribeck model parameter identification method was proposed. A sine wave was used as the signal source, and specially designed devices were used to accomplish the switch of the working condition. Through the use of the genetic algorithm, the rotational inertia and parameters of the system load and working load were identified by stages. Finally, the validation of the identification method was carried out with a simulation.
Highlights
A solid ducted rocket is a propulsion device developed based on solid rocket and ramjet technology, possessing the advantages of high specific impulse, long range, small size, low weight, compact structure, and so on
The load characteristics of the flow regulator for a ducted rocket were examined in this paper, and the loads of the flow regulator were divided into two parts: the system load and the working load
The models of the gas generator, actuator, and load were built based on the working mechanism and the Stribeck friction model
Summary
A solid ducted rocket is a propulsion device developed based on solid rocket and ramjet technology, possessing the advantages of high specific impulse, long range, small size, low weight, compact structure, and so on. As far as can be determined, the friction and the load it brings to the flow regulator have rarely been studied except in reference [16], where the friction generated in the gas flow regulation of ducted rockets was considered, and a compensation method was proposed and proved with a simulation result. This method only considered the viscous friction without taking other friction forces into account, and the mechanism and characteristics of the friction in the flow regulator were not discussed in detail. A new parameter identification method for the Stribeck model is proposed and verified in a simulation case
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
