Articles of The Transactions of KSRC

Full text article ( in russian)

Year	2017
Issue	380
Volume	2
Pages	49-53
Caption	Derivation of coefficient for thermodynamic effectiveness of gas jet propulsor
Authors	Sergeev М.S.
Keywords	thermodynamic effectiveness, programmed motion, effectiveness zone, energy equation, propellant
Summary	Object and purpose of research.The purpose of this study is to derive a coefficient describing the effectiveness of gas jet propulsor during long-term interaction with environment. Subject matter and methodsThe equation of straight-line motion of a rescue craft propelled by gas jet, energy equation and Newtonian law of cooling are used in the study. Main results.A mathematical expression is obtained describing the effectiveness of a gas jet propulsor (thermodynamic effectiveness coefficient of gas jet propulsor), a notion of the effectiveness zone diagram is introduced to characterize the gas jet propulsor performance. Conclusion.The derived thermodynamic effectiveness coefficient makes it possible to assess the gas jet propulsor fitness to perform the programmed motion scenario after launching and under interaction with operational environment, as well as to improve its effectiveness.
Rubrics	Naval architecture