Development study of a precooler for the air-turboramjet expander-cycle engine

K. Harada, N. Tanatsugu, Tetsuya Satou

Research output: Contribution to journalArticle

28 Citations (Scopus)

Abstract

A review of the development of a precooler for the air-turboramjet expander-cycle (ATREX) engine is given. Three types of precooler for the ATREX engine ground-test model were designed, manufactured, and tested under sea-level static conditions. The results suggested two problems affecting the precooler performance, heat transfer rate and airflow pressure drop. One is nonuniformity of the airflow through the tube banks. The other problem is frost formation on the heat transfer surfaces. Concerning nonuniformity of airflow, the shell configuration was modified based on analysis by computational fluid dynamics calculation. To improve the precooler performance under frosting condition, a new method to add a condensable gas into the airflow was proposed and examined by experiments on a subscale heat exchanger model. Addition of a small quantity of ethanol can effectively restrain the decline of the precooler performance due to frost formation.

Original languageEnglish
Pages (from-to)1233-1238
Number of pages6
JournalJournal of Propulsion and Power
Volume17
Issue number6
Publication statusPublished - 2001 Nov
Externally publishedYes

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airflow
engines
frost
engine
Heat transfer
Engines
nonuniformity
cycles
air
Sea level
Air
heat transfer
Pressure drop
Heat exchangers
ground tests
Computational fluid dynamics
Ethanol
heat exchangers
computational fluid dynamics
pressure drop

ASJC Scopus subject areas

  • Aerospace Engineering

Cite this

Development study of a precooler for the air-turboramjet expander-cycle engine. / Harada, K.; Tanatsugu, N.; Satou, Tetsuya.

In: Journal of Propulsion and Power, Vol. 17, No. 6, 11.2001, p. 1233-1238.

Research output: Contribution to journalArticle

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