Study on the effects of preheated wall/plates in microthruster systems

• Autorzy: Lekzian E. , Parhizkar H. , Ebrahimi A.

Identyfikatory

DOI

10.15632/jtam-pl.56.3.713

• Języki publikacji: EN

Abstrakty

EN

In the present paper, effects of pre-heated walls/plates on microthrusters performance are studied using a DSMC/NS solver. Three microthruster configuration types are studied. Type 1 is a cold gas microthrster. Microthruster type 2 has pre-heated walls. Pre-heated plates are inserted inside the chamber of microthruster type 3. It is observed that in microthruster type 2 the flow is accelerated and the specific impulse is elevated. However, by insertion of the pre-heated plates in microthruster type 3, viscous effects have stronger negative influence and the thrust is decreased. By implementing temperature gradients on walls in type 2 and on plates in type 3, it is observed that a higher temperature gradient enhances performance parameters of microthruters. Among all types of microthrusters, microthruster type 2 with pre-heated walls has the highest thrust and specific impulse. Microthruster type 3 with a temperature gradient of 300-500K has the minimum thrust due to a considerable decrease in the mass flow rate.

Słowa kluczowe

EN

DSMC/NS solver; pre-heated walls/plates; microthruster; performance parameters; temperature gradient

• Wydawca: Polskie Towarzystwo Mechaniki Teoretycznej i Stosowanej
• Czasopismo: Journal of Theoretical and Applied Mechanics
• Rocznik: 2018
• Tom: Vol. 56 nr 3
• Strony: 713--725
• Opis fizyczny: Bibliogr. 40 poz., rys., tab.

Twórcy

autor

Lekzian E.

• Aerospace Faculty, Malek Ashtar University of Technology, Tehran, Iran

autor

Parhizkar H.

• Aerospace Faculty, Malek Ashtar University of Technology, Tehran, Iran

autor

Ebrahimi A.

• Aerospace Faculty, Malek Ashtar University of Technology, Tehran, Iran

Bibliografia

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Uwagi

PL

Opracowanie rekordu w ramach umowy 509/P-DUN/2018 ze środków MNiSW przeznaczonych na działalność upowszechniającą naukę (2018).