Scramjet engine 조사.

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1 Scramjet engine 조사

2 차례 Scramjet 이란? 가스터빈엔진과 구조적 차이점 Ramjet 과의 차이점 scramjet의 구조와 운용범위
내부 초음속연소과정 현재 운용중인 scramjet 비행체 개발중인 scramjet 비행체 reference

3 What is a scramjet? A scramjet is a kinetic compression(ramjet)
with a supersonic air through-flow  supersonic combustion ramjet Combustion speed remains 35 μsec ± 5 μsec

4 가스터빈엔진과 구조적차이점(1)

5 가스터빈엔진과 구조적차이점(2)  ramjet Scramjet 

6 Ramjet 과의 차이점 Ramjet Scramjet

7 scramjet의 구조와 운용범위(1)

8 scramjet의 구조와 운용범위(2)

9 scramjet의 구조와 운용범위(3)

10 scramjet의 구조와 운용범위(4)

11 Premixing process                                                                                                                                      

12 내부초음속연소모습(1)                                                                                                                                                                         Strong Interaction in CP1 : the growth rate(dc/x) of mixing layer starts to increase significantly after CP1 Weak Interaction in CP2 , CP3: smaller density gradient between fuel and air within the mixing layer CP1 : first crossing point CP2: second crossing point CP3: third crossing point δc : mixing layer thickness

13 내부초음속연소모습(2)

14 내부초음속연소모습(3-1)

15 내부초음속연소모습(3-2) The mixing/combustion efficiency is increased when wedge is positioned adequately.

16 내부초음속연소모습(4) Supersonic Flame ( Increasing Fuel)                                                       

17 Supersonic Flame ( Increasing Air)
내부초음속연소모습(5) Supersonic Flame ( Increasing Air)                                                        

18 WHY IS IT SO EXPENSIVE?                                                                                                                   

19 J-58 Pratt and Whitney Engine
현재 운용중인 turbo-ramjet비행체(1) J-58 Pratt and Whitney Engine SR71

20 현재 운용중인 turbo- ramjet비행체(2)
<<Specifications: >> Model: Pratt & Whitney J-58JT11D-20 Compressor: 9-stage, axial flow, single spool Turbine: two-stage axial flow Thrust: 32,500 lbs. with afterburner Weight: approx. 6,000 lbs. Max. operating altitude: above 80,000 ft.

21 Closeup of J-58 Inlet with Spike Removed
SR71 엔진모습 Closeup of J-58 Inlet with Spike Removed

22 Scramjet Engine Hyper-X (Future) Mach 10

23 Reference