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논문 기본 정보

자료유형
학위논문
저자정보

이재혁 (부산대학교, 부산대학교 대학원)

지도교수
최정열
발행연도
2023
저작권
부산대학교 논문은 저작권에 의해 보호받습니다.

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이 논문의 연구 히스토리 (4)

초록· 키워드

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Ignition characteristics of the scramjet combustor using a micro-Pulse Detonation Engine(μPDE) were experimentally studied. A direct-connect scramjet combustor (DCSC) is built to simulate flight conditions on the ground. A vitiation air heater (VAH) supplied high-enthalpy supersonic vitiated air to the isolator and scramjet combustor. A total temperature of 1,300 K, a total pressure of 1.685 MPa, and a Mach number of 2.0 correspond to the flight conditions at 20~25 km, flight Mach number 5.0. The scramjet fuel is injected upstream of the cavity. The μPDE is installed above the cavity, and the detonation wave propagates perpendicular to the flow direction. In this study, ignition characteristics were observed with pressure transducers, thermocouples, and high-speed Schlieren images by changing the equivalence ratio and the number of cavities. At every condition, μPDE successfully ignited the scramjet combustor. As the

목차

1. Introduction 1
1.1. Research Background 1
2. Experimental Apparatus 5
2.1. PNU-DCSC 5
2.1.1. Gas Supply System 5
2.1.2. Vitiated Air Heater(VAH) 13
2.1.3. Isolator and Scramjet Combustor Design 23
2.1.4. μPDE Design 27
3. Result 28
3.1. VAH Design Point Verification Test 28
3.1.1. Preliminary Test 28
3.1.2. VAH Exit Mach Number Measurement using Wedge 31
3.2. Scramjet Combustor Preliminary Test 38
3.2.1. Isolator Exit Mach Number Measurement using Wedge 38
3.3. Scramjet Combustor: Single Cavity Ignition Test 40
3.3.1. Supply fuel without μPDE Ignition 41
3.3.2. Scramjet Forced Ignition: Scramjet Fuel Ignition by VAH Ignition 42
3.3.3. Scramjet Ignition with μPDE Ignition 43
3.4. Scramjet Combustor: Tandem Cavity Ignition Test 51
3.4.1. Scramjet Ignition with VAH Ignition 52
3.4.2. Scramjet Ignition with μPDE Ignition at Cavity 1 53
3.4.3. Scramjet Ignition with μPDE Ignition at Cavity 2 63
3.5. Scramjet Combustor: Single and Tandem Cavity Comparison 74
3.5.1. Wall Pressure 74
4. Conclusion and Discussion 75
5. Reference 76
6. Abstract 80

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