An Experimental Study on the Performance Characteristics of Cooling System for Aircraft External Reconnaissance Stores

Jung, Daeyoon; Lee, Hang Bok

doi:2013.16.1.74

J. KIMS Technol > Volume 16(1); 2013 > Article

Journal of the Korea Institute of Military Science and Technology 2013;16(1):74-80.
DOI: https://doi.org/10.9766/KIMST.2013.16.1.074

An Experimental Study on the Performance Characteristics of Cooling System for Aircraft External Reconnaissance Stores

Daeyoon Jung, Hang Bok Lee

항공기 외장형 정찰 장비용 냉각 시스템의 성능 특성에 관한 실험적 연구

정대윤, 이행복

국방과학연구소

Abstract

In this paper, we have proposed a vapor cycle refrigeration system as a cooling system to provide cooling air to the aircraft external reconnaissance stores. In the proposed vapor cycle system, receiver which prevents refrigerant from subcooling was eliminated and thermal expansion valve was replaced with electronic expansion valve. The vapor cycle refrigeration system is aimed to provide cooling air to the reconnaissance stores which is added to the aircraft in the form of external store. The wide temperature range of ambient air from the flight conditions can decrease the cooling performance and can make the refrigeration system unstable in low ambient temperature. Performance characteristics of the vapor cycle refrigeration system has been experimented under air conditions which is derived from the flight envelope. From the experiments, the vapor cycle refrigeration system has been proved to provide enough cooling air to the reconnaissance equipment and to be stable under all the flight conditions.

Key Words: Vapor Cycle Refrigeration System, Reconnaissance Equipment, Receiver, Electronic Expansion Valve, Subcooling