Aeronautics and astronautics – Aircraft structure – Details
Reexamination Certificate
2006-10-17
2006-10-17
Swiatek, Robert P. (Department: 3643)
Aeronautics and astronautics
Aircraft structure
Details
C244S00100R, C239S008000
Reexamination Certificate
active
07121511
ABSTRACT:
A shock wave in a gas is modified by emitting energy to form an extended path in the gas; heating gas along the path to form a volume of heated gas expanding outwardly from the path; and directing a path. The volume of heated gas passes through the shock wave and modifies the shock wave. This eliminates or reduces a pressure difference between gas on opposite sides of the shock wave. Electromagnetic, microwaves and/or electric discharge can be used to heat the gas along the path. This application has uses in reducing the drag on a body passing through the gas, noise reduction, controlling amount of gas into a propulsion system, and steering a body through the gas. An apparatus is also disclosed.
REFERENCES:
patent: 3620484 (1971-11-01), Schoppe
patent: 5263661 (1993-11-01), Riley
patent: 6247671 (2001-06-01), Saeks et al.
Igor Adamovich et al., Igor Adamovich, Vish V. Subramaniam, Walter R. Lempert, and J. William Rich, “Studies of Anomalous Shock Wave Propagation and Dispersion in Weakly Ionized Plasmas”, Presented at the 2ndWeakly Ionized Gases Workshop, Norfolk, VA Apr. 24-25, 1998. Proceedings published by AIAA.
J.W. Rich, I.V. Adamovich, V. V. Subramaniam, S.O. Macharet, “Shockwave Propagation in Weakly Ionized Plasmas”, Presented at the Workshop on Weakly Ionized Gases, US Air Force Academy, Jun. 9-13, 1997. Printed with restricted dissemination by the Department of Defense.
Kevin Kremeyer, Sergey Nazarenko, Alan Newell, “The Role of Vorticity in Shock Propagation Through Inhomogeneous Media”, Presented at the 37thAerospace Sciences Meeting and Exhibit, Reno, NV Jan. 11-14, 1999. Proceedings published by AIAA.
S.N. Chuvachev, “Ambient Air Modification for Drag Reduction: DC Discharges in Rarefied Supersonic Air Flow”, Presented at the Workshop on Weakly Ionized Gases, US Air Force Academy, Jun. 9-13, 1997. Printed with restricted dissemination by the Department of Defense.
V. Skvortsov, Y.E. Kuznetsov, A.I. Klimov, B.G. Efimov, V.S. Markin, A.K. Golovnja, L.D. Vasilenko, A.H. Khvostov, L.P. Grachev, K.V. Khodataev, S.B. Leonov, V.M. Litvinov, L.N. Nedopekin, P.V. Filin, “Results of Experimental Investigation in Wind Tunnels of the Electric Discharge Influence on Aerodynamic Drag and Flow over Models”, Presented at the Workshop on Weakly Ionized Gases, US Air Force Academy, Jun. 9-13, 1997. Printed with restricted dissemination by the Department of Defense.
Vladimir Bychkov, “Theoretical Analysis of Plasma Aerodynamic Experiments”, Presented at the Workshop on Weakly Ionized Gases, US Air Force Academy, Jun. 9-13, 1997. Printed with restricted dissemination by the Department of Defense.
R.B. Miles, S.O. Macheret, P:.Efthimion, “Mechanisms of Shock Propagation and Stability Control in Low Temperature Plasmas”, Presented at the Workshop on Weakly Ionized Gases, US Air Force Academy, Jun. 9-13, 1997. Printed with restricted dissemination by the Department of Defense.
J.A. Johnson III, R. Appartaim, J. Tate, F. Hunte, “Drag Reduction from Non-Equilibrium Plasma Chemistry for Shock-Free Supersonic Flight”, Presented at the Workshop on Weakly Ionized Gases, US Air Force Academy, Jun. 9-13, 1997. Printed with restricted dissemination by the Department of Defense.
Yu. A. Ionikh, N. V. Chernysheva, A.P. Yalin, S.O. Macheret, L. Martinelli, and R. B. Miles, Shock Wave Propgation Through Glow Discharge Plasmas: Evidence of Thermal Mechanism of Shock Dispersion, Presented at the 38thAerospace Sciences Meeting and Exhibit, Reno, NV Jan. 10-13, 2000. Proceedings published by AIAA.
B.N. Ganguly, P. Bletzinger, A. Garscadden, Shock Wave Damping and Dispersion in Nonequilibrium Low Pressure Argon Plasmas, Elsevier Press, Physics Letters A 230(1997) 218-222.
S.N. Chuvashev, A.P. Ershov, A.I. Klimov, S.B. Leonov, V.M. Shibkov, I.B. Timofeev , “Flow Around Body and Characteristics of AC/DC Discharges in Plasma Aerodynamic Experiment”, Presented at the 2ndWeakly Ionized Gases Workshop, Norfolk, VA Apr. 24-25, 1998. Proceedings published by AIAA.
J. H. Mullen, R.J. Kashuba, J.D. Kelley, P. Vogel, P. Smereczniak, “Recent Progress in Plasma Aerodynamics”, Presented at the 2ndWeakly Ionized Gases Workshop, Norfolk, VA Apr. 24-25, 1998. Proceedings published by AIAA.
N. Malmuth, “Basic Physical Mechanisms Associated with Plasma Aerodynamic Flow Control”, Presented at the Workshop on Weakly Ionized Gases, US Air Force Academy, Jun. 9-13, 1997. Printed with restricted dissemination by the Department of Defense.
“(Plasma Power) Drag Factor”, Published by Jane's Defence Weekly (UK), Jun. 17, 1998.
Kiril V. Khodataev, “The Plasma Effects in Air Dynamics. The Gas Discharge Theory Model in Aerodynamic Calculations”, Presented at the 2ndWeakly Ionized Gases Workshop, Norfolk, VA Apr. 24-25, 1998. Proceedings published by AIAA.
W. Beaulieu, V. Brovkin, I. Goldberg, A. Klimov, Yu. Kolesnichenko, A. Krylov, V. Lashkov, S. Leonov, I. Mashek, M. Ryvkin, Yu. Serov, “Microwave Plasma Influence on Aerodynamic Characteristics of body in Airflow”, Presented at the 2ndWeakly Ionized Gases Workshop, Norfolk, VA Apr. 24-25, 1998. Proceedings published by AIAA.
K. V. Khodataev, “Physics of Under-Critical Microwave Discharge and its Influence on Supersonic Aerodynamics and Shock Waves”, Presented at the Workshop on Weakly Ionized Gases, US Air Force Academy, Jun. 9-13, 1997. Printed with restricted dissemination by the Department of Defense.
B.V. Potapkin, R.I. Asisov, G.S. Baronov, V.K. Jivotov, M.F. Krotov, V.D. Rusanov, “Non-Equilibrium Microwave Discharges in the Fast Gas Flows”, Presented at the Workshop on Weakly Ionized Gases, US Air Force Academy, Jun. 9-13, 1997. Printed with restricted dissemination by the Department of Defense.
L. N. Myrado, “Air Spike, Pulsed Detonation Engine and MHD Slipstream Accelerator Research”, Presented at the Workshop on Weakly Ionized Gases, US Air Force Academy, Jun. 9-13, 1997. Printed with restricted dissemination by the Department of Defense.
Y. P. Raizer, N.N. Shneider, “Drag Reduction of Hypersonic Blunt Body Due to Power Source”, Presented at the Workshop on Weakly Ionized Gases, US Air Force Academy, Jun. 9-13, 1997. Printed with restricted dissemination by the Department of Defense.
Levin V.A., Afonina N.E., Gromov V.G., Georgievsky P.Yu., Terntjeva L. V., “Influence of Energy Input by Electric Discharge on Supersonic Flows around Bodies”, Presented at the 2ndWeakly Ionized Gases Workshop, Norfolk, VA Apr. 24-25, 1998. Proceedings published by AIAA.
D. W. Riggins, H.F. Nelson, E. Johnson, “Blunt Body Wave Drag Reduction Using Focused Energy Deposition”, Presented at the AIAA 8thInternational Space Planes and Hypersonics Systems and Technology Conference, Norfolk, VA Apr. 27-30, 1998. Proceedings published by AIAA.
S.J. Scott, E. Thornton, C.R. Spikings, “Further Studies of Plasma Generators for Aerodynamic Drag Reduction—Characterization of Erosive Plasma Jet Generators”, Presented at the 2ndWeakly Ionized Gases Workshop, Norfolk, VA Apr. 24-25, 1998. Proceedings published by AIAA.
W. Beaulieu, A. I. Klimov, S.B. Leonov, “Physical Background of Plasma Flight Test Experiment”, Presented at the Workshop on Weakly Ionized Gases, US Air Force Academy, Jun. 9-13, 1997. Printed with restricted dissemination by the Department of Defense.
G. Tchernyi, “Aerodynamics of Flying Body with Energy Release Near its Surface”, Presented at the Workshop on Weakly Ionized Gases, US Air Force Academy, Jun. 9-13, 1997. Printed with restricted dissemination by the Department of Defense.
G. G. Chernyi, “The Impact of Electromagnetic Energy Addition to Air Near the Flying Body on its Aerodynamic Characteristics (Russian Contribution)”, Presented at the 2ndWeakly Ionized Gases Workshop, Norfolk, VA Apr. 24-25, 1998. Proceedings published by AIAA.
P. G. P. Toro
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