Developing an efficient, supersonic combustion-based, air breathing propulsion cycle operating above Mach 3.5, especially when conventional hydrocarbon fuels are sought and particularly when liquid fuels are preferred to increase density, requires mostly effective mechanisms to improve mixing efficiency. One way to extend the time available for mixing is to inject part of the fuel upstream of the vehicle’s combustion chamber. Injection from the wall remains one of the most challenging problems in supersonic aerodynamics, including the requirement to minimize impulse losses, improve fuel-air mixing, reduce inlet∕combustor interactions, and promote flame stability. This article presents a review of studies involving liquid and, in selected cases, gaseous fuel injected in supersonic inlets or in combustor’s insulators. In all these studies, the fuel was injected from a wall in a wake of thin swept pylons at low dynamic pressure ratios (qjetqair=0.61.5), including individual pylon∕injector geometries and combinations in the inlet and combustor’s isolator, a variety of injection conditions, different injectants, and evaluated their effects on fuel plume spray, impulse losses, and mixing efficiency. This review article cites 47 references.

1.
Schetz
,
J. A.
, 1980, “
Injection and Mixing in Turbulent Flow
,”
Prog. Astronaut. Aeronaut.
0079-6050,
68
, pp.
145
148
.
2.
Seiner
,
J. M.
,
Dash
,
S. M.
, and
Kenzakovich
,
D. C.
, 1999, “
Historical Survey on Enhanced Mixing in Scramjet Engines
,” AIAA Paper No. 99-4869.
3.
Gallimore
,
S.
,
Jabobsen
,
L.
,
O’Brien
,
W.
, and
Schetz
,
J.
, 2003, “
Operational Sensitivities of an Integrated Scramjet Ignition∕Fuel Injection System
,”
J. Propul. Power
0748-4658,
19
, pp.
183
189
.
4.
Parent
,
B.
, and
Sislian
,
J.
, 2003, “
Effect of Geometrical Parameters on the Mixing Performance of Cantilevered Ramp Injectors
,”
AIAA J.
0001-1452,
41
(
3
), pp.
448
456
.
5.
Gutmark
,
E. J.
,
Schadow
,
K. S.
, and
Yu
,
K. H.
, 1995, “
Mixing Enhancement in Supersonic Free Shear Layer Flows
,”
Annu. Rev. Fluid Mech.
0066-4189,
27
, pp.
375
417
.
6.
Stouffer
,
S. D.
,
Vandsburger
,
U.
, and
Northam
,
G. B.
, 1994, “
Comparison of Wall Mixing Concepts for Scramjet Combustors
,” AIAA Paper No. 94-0587.
7.
Billig
,
F. S.
, 1993, “
Research on Supersonic Combustion
,”
J. Propul. Power
0748-4658,
9
(
4
), pp.
499
520
.
8.
Seiner
,
J.
,
Dash
,
S.
, and
Kenzakowski
,
D.
, 2001, “
Historical Survey on Enhanced Mixing in Scramjet Engines
,”
J. Propul. Power
0748-4658,
17
(
6
), pp.
1273
1286
.
9.
Northam
,
G. B.
,
Greenberg
,
I.
,
Byington
,
C. S.
, and
Capriotti
,
D. P.
, 1992, “
Evaluation of Parallel Injector Configurations for Mach 2 Combustion
,”
J. Propul. Power
0748-4658,
8
(
2
), pp.
491
499
.
10.
Owens
,
M. G.
,
Segal
,
C.
, and
Auslander
,
A. H.
, 1997, “
Effects of Mixing Schemes on Kerosene Combustion in a Supersonic Airstream
,”
J. Propul. Power
0748-4658,
13
(
4
), pp.
525
531
.
11.
McClinton
,
C. R.
, 1972, “
The Effect of Injection Angle on the Interaction Between Sonic Secondary Jets and a Supersonic Free Stream
,” NASA Report No. TN D-6669.
12.
Donahue
,
J. M.
,
McDaniel
,
J. C.
, and
Hossein
,
H-H.
, 1994, “
Experimental and Numerical Study of Swept Ramp Injection in a Supersonic Flowfield
,”
AIAA J.
0001-1452,
32
(
9
), pp.
1860
1867
.
13.
Heiser
,
W. H.
,
Pratt
,
D. T.
,
Daley
,
D. H.
, and
Mehta
,
U. B.
, 1994,
Hypersonic Airbreathing Propulsion
,
AIAA Education Series
,
AIAA
,
Washington, DC
.
14.
Guilly
,
V.
,
Luche
,
J.
,
Virot
,
F.
,
Desbordes
,
D.
,
Khasainov
,
B.
, and
Presles
,
H. N.
, 2006, “
On the Effect of the Heat Release Law on Detonation Cellular Structure and Detonation Behavior of Gases
,” in
Pulsed and Continuous Detonations
,
G.
Roy
,
S. M.
Frolov
, and
J. O.
Sinibaldi
, eds.,
Torus Press
, Moscow, Russia, pp.
199
204
.
15.
Murray
,
S. B.
,
Thibailt
,
P. A.
,
Zhang
,
F.
,
Bjerketvedt
,
D.
,
Sulmistras
,
A.
,
Thomas
,
G. O.
,
Jenssen
,
A.
, and
Moen
,
I. O.
, 2001, “
The Role of Energy Distribution on the Transmission of Detonation
,” in
High-Speed Deflagration and Detonation: Fundamentals and Control
,
G.
Roy
,
S. M.
Frolov
,
D. W.
Netzer
, and
A. A.
Borisov
, eds.,
Elex-KM
, Moscow, Russia, pp.
139
162
.
16.
Nori
,
V.
,
Lerma
,
N.
,
Gustavsson
,
J. P.
,
Segal
,
C.
, and
Fernandez
,
R.
, 2006, “
Forced Oscillations in a Mixed-Compression Inlet at Mach 3.5 for Pulse Detonation Engine Systems
,”
ASME J. Fluids Eng.
0098-2202,
128
(
3
), pp.
494
506
.
17.
Gustavsson
,
J. P.
,
Nori
,
V.
, and
Segal
,
C.
, 2003, “
Inlet∕Engine Interactions in an Axisymmetric Pulse Detonation Engine System
,”
J. Propul. Power
0748-4658,
19
(
2
), pp.
282
286
.
18.
Baklanov
,
D. I.
,
Gvodzeva
,
L. G.
, and
Tarusova
,
N. W.
, 2006, “
Application of Valveless Fuel Supply System for Detonation Control by Creating Variable Mixtures Composition
,” in
Pulsed and Continuous Detonations
,
G.
Roy
,
S. M.
Frolov
, and
J. O.
Sinibaldi
, eds.,
Torus Press
, Moscow, Russia, pp.
250
253
.
19.
Henry
,
J. R.
, and
Anderson
,
G. Y.
, 1973, “
Design Considerations for the Airframe-Integrated Scramjet
,” NASA Report No. TM X-2895.
20.
Investigations of the Low Speed Fixed Geometry Supersonic Combustion Ramjet
,” 1967, General Applied Science Laboratories, Report No. AFAPL-TR-66-139.
21.
Vinogradov
,
V.
, 1997, “
Review of Russian Hydrocarbon Fueled Scramjet Technology
,”
Workshop on Russian Hypersonic Technologies
, APL-JHU, November.
22.
Vasiliev
,
V.
,
Zakotenko
,
S. N.
,
Krasheninnikov
,
S. Y.
, and
Stepanov
,
V. A.
, 1994, “
Numerical Investigation of Mixing and Augmentation Behind Oblique Shock Waves
,”
AIAA J.
0001-1452,
32
(
2
), pp.
311
316
.
23.
Sislian
,
J. P.
, and
Dudebout
,
R.
, 1993, “
Hypersonic Shock-Induced Combustion Ramjet Performance Analysis
,”
Proceedings of the 11th International Symposium on Air-Breathing Engines
,
Tokyo, Japan
, September, pp.
413
420
.
24.
Sislian
,
J. P.
, and
Parent
,
B.
, 2004, “
Hypervelocity Fuel∕Air Mixing in a Shcramjet Inlet
,”
J. Propul. Power
0748-4658,
20
(
2
), pp.
267
272
.
25.
Schwaitzentruber
,
T. E.
,
Sislian
,
J. R.
, and
Parent
,
B.
, 2005, “
Suppression of Premature Ignition in the Premixed Inlet Flow of a Shcramjet
,”
J. Propul. Power
0748-4658,
21
(
1
), pp.
87
94
.
26.
Arai
,
T.
,
Kasahara
,
J.
,
Mukai
,
K.
, and
Sakima
,
F.
, 2002, “
Experiments of Pre-Mixing Shock-Induced Combustion Scramjet With Forebody-Wall Fuel Injection
,” AIAA Paper No.2002-5243.
27.
Star
,
J. B.
,
Edwards
,
J.
, Jr.
,
Smart
,
M. K.
, and
Baurle
,
R. A.
, 2005, “
Numerical Simulation of Scramjet Combustion in a Shock Tunnel
,” AIAA Paper No. 2005-0428.
28.
Vinogradov
,
V. A.
, and
Prudnikov
,
A. G.
, 1993, “
Injection of Liquid Into the Strut Shadow at Supersonic Velocities
,”
SAE Aerospace Atlantic Conference
, Apr., Paper No. SAE-931455.
29.
Golubev
,
A. G.
, and
Yagodkin
,
V. I.
, 1979, “
Methods of Dispersity and Liquid Spray Droplet Concentration Definition by Use of Light Diffusion Integral Characteristics
,” in
Science Notes of CIAM
, No. 867 (in Russian).
30.
Schetz
,
J. A.
, 1980, “
Turbulent Flowfield Mixing and Injection Process
,”
Prog. Astronaut. Aeronaut.
0079-6050,
68
, pp.
149
154
.
31.
Northam
,
G. B.
, and
Anderson
,
G. Y.
, 1986, “
Supersonic Combustion Ramjet Research at Langley
,” AIAA Paper No. 86-0159.
32.
Baranovski
,
S. I.
, and
Schetz
,
J. A.
, 1979, “
Effect of Injection Angle on Liquid Injection Into Supersonic Flow
,” AIAA Paper No. 79-0383.
33.
Northam
,
G. B.
,
Capriotti
,
D. P.
,
Byington
,
G. B.
, and
Greenberg
,
I.
, 1992, “
Evaluation of Parallel Injector Configurations for Mach 2 Combustion
,”
J. Propul. Power
0748-4658,
8
(
2
), pp.
491
499
.
34.
Marble
,
F. E.
,
Zukoski
,
E.
,
Jacobs
,
J. W.
,
Hendrics
,
G. J.
, and
Waitz
,
I. A.
, 1990, “
Shock Enhancement and Control of Hypersonic Mixing and Combustion
,” AIAA Paper No. 90-1981.
35.
Owens
,
M.
, and
Segal
,
C.
, 2001, “
Development of a Hybrid-Fuzzy Air Temperature Controller for a Supersonic Combustion Test Facility
,”
Exp. Fluids
0723-4864,
31
(
1
), pp.
26
33
.
36.
Owens
,
M.
,
Mullargili
,
S.
,
Segal
,
C.
, and
Vinogradov
,
V.
, 2001, “
Effect of Kerosene Pre-Injection on Combustion Flameholding in a Mach 1.6 Airflow
,”
J. Propul. Power
0748-4658,
17
(
3
), pp.
605
611
.
37.
Shikhman
,
Y. M.
,
Vinogradov
,
V. A.
,
Yanovskiy
,
L. S.
,
Stepanov
,
V. A.
,
Shlyakotin
,
V. E.
, and
Pen’kov
,
S. N.
, 2001, “
The Demonstrator of Technologies—Endothermic Hydrocarbon Fueled Dual Mode Scramjet
,” AIAA Paper No. 1787-2001.
38.
Vinogradov
,
V. A.
,
Shikhman
,
Y. M.
,
Albegov
,
R. V.
,
Vedeshkin
,
G. K.
,
Albegov
,
R. V.
,
Vedeshkin
,
G. K.
, 2003, “
Experimental Research of Pre-Injected Methane Combustion in High Speed Airflow
,” AIAA Paper No. 2003-6940.
39.
Buriko
,
Y.
,
Vinogradov
,
V.
,
Goltsev
,
V.
, and
Waltrup
,
P.
, 2002, “
Influence of Active Radical Concentration on Self-Ignition Delay of Hydrocarbon Fuel∕Air Mixture
,”
J. Propul. Power
0748-4658,
18
(
5
), pp.
1049
1058
.
40.
Livingston
,
T.
,
Segal
,
C.
,
Schindler
,
M.
, and
Vinogradov
,
V. A.
, 2000, “
Penetration and Spreading of Liquid Jets in an External-Internal Compression Inlet
,”
AIAA J.
0001-1452,
38
(
6
), pp.
989
994
.
41.
Guoskov
,
O. V.
,
Kopchenov
,
V. I.
,
Lomkov
,
K. E.
,
Vinogradov
,
V. A.
, and
Waltrup
,
P. J.
, 2001, “
Numerical Research of Gaseous Fuel Pre-Injection in Hypersonic 3-D Inlet
,”
J. Propul. Power
0748-4658,
17
(
6
), pp.
1162
1169
.
42.
Goldfeld
,
M.
,
Starov
,
A.
, and
Vinogradov
,
A.
, 2001, “
Experimental Study of Scramjet Module
,”
J. Propul. Power
0748-4658,
17
(
6
), pp.
1222
1226
.
43.
Bezgin
,
L.
,
Ganzhelo
,
A. N.
,
Gouskov
,
O. V.
,
Kopchenov
,
V. I.
,
Laskin
,
I.
, and
Lomkov
,
K. E.
, 1995, “
Numerical Simulation of Supersonic Flows Applied to Scramjet Duct
,” ISABE No. 95-7082, pp.
895
905
.
44.
Bezgin
,
L.
,
Ganzhelo
,
A. N.
,
Gouskov
,
O. V.
,
Kopchenov
,
V. I.
,
Laskin
,
I.
, and
Lomkov
,
K. E.
, 1995, “
Numerical Simulation of Supersonic Flows Applied to Scramjet Duct
,” ISABE No. 95-7082, pp.
895
905
.
45.
Gulyaev
,
A. V.
,
Kozlov
,
V. E.
, and
Secundov
,
A. N.
, 1995, “
Comparative Numerical Testing of One- and Two-Equation Turbulence Models for Flows With Separation and Reattachment
,” AIAA Paper No. 95-0863.
46.
Ogorodnikov
,
D. A.
,
Vinogradov
,
V. A.
,
Petrov
,
M. D.
,
Shikhman
,
Y. M.
, and
Stepanov
,
V. A.
, 1999, “
Some Results of CIAM Scramjet Technology
,” AIAA Paper No. 99-4030.
47.
Strokin
,
V. N.
, abd
Grachev
,
V. A.
, 1997, “
The Peculiarities of Hydrogen Combustion in Scramjet Combustors
,”
Proceedings of the 13th ISABE Conference
, Vol.
1
, pp.
374
384
.
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