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Experimental Study on Unsteady-state Characteristics of a Pintle Thruster with Variable Pintle Speeds
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 Title & Authors
Experimental Study on Unsteady-state Characteristics of a Pintle Thruster with Variable Pintle Speeds
Hwang, Heuiseong; Huh, Hwanil;
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 Abstract
The purpose of this study is to investigate unsteady-state characteristics of a pintle thruster with various pintle speed. Based on steady state experimental results, non-linear pintle stroke equation is obtained and applied to the unsteady state experimental system. For the unsteady state experiments, three different pintle speeds are used: 3.10 mm/s, 5.65 mm/s, 10.83 mm/s, respectively. Results show that backward pintle stroke results in faster convergence time because of high chamber pressure during backward pintle stroke sequence. During the forward and backward process, thrust curve shows singular points. These phenomenons is caused by variation of mass flow rate, which is mainly due to changes of both chamber pressures and nozzle throat area. This behavior becomes distinctive for a faster pintle speed case.
 Keywords
Experiment;Unsteady State;Pintle Actuator Speed;Pintle Stroke Control;
 Language
Korean
 Cited by
1.
Numerical Study on Thrust Characteristics of an E-D Nozzle for Altitude Compensation, Journal of the Korean Society of Propulsion Engineers, 2016, 20, 3, 87  crossref(new windwow)
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