Abstract
Full-scale and computational experiments were used to investigate the flows in the jet thrust unit with annular nozzle and deflector in the form of a spherical segment. The used working gas was the combustion products of air mixtures with acetylene, gas-phase aviation kerosene, and natural gas. Experimental studies were carried out in a hot-shot wind tunnel in the range of stagnation pressure from 0.48 to 2.05 MPa. The calculations for the cases of combustion products outflow in terrestrial and high altitude conditions were performed with the original computer program that used the Euler and Navier-Stokes systems supplemented by equations of chemical kinetics. It was found that the thrust of the jet module with an annular nozzle at high altitude almost twice exceeds the sound nozzle thrust, but is lesser (about 25 %) than the thrust of the ideal calculated Laval nozzle; the difference therewith decreases markedly with the decrease of flight altitude and stagnation pressure.
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References
A.N. Kraiko and N.I. Tillyayeva, Countoring spike nozzles and determining the optimal direction of their primary flows, Fluid Dynamics, 2007, Vol. 42, No. 2, P. 321–329.
A.P. Vasiliev, V.M. Kudryavtsev, and V.A. Kuznetsov, Fundamentals of Rocket Engine Theory and Calculations, Vysshaya Shkola, Moscow, 1993.
D.H. Huang, Aerospike engine technology demonstration for space propulsion, AIAA Paper No. 74-1080. (AIAA/SAE 10th Propulsion Conf. 21–23 October 1974, San Diego, California).
T.-S. Wang, Analysis of linear aerospike plume-induced X-33 base-heating environment, J. Spacecraft Rockets, 1999, Vol. 36, No. 6, P. 777–783.
V.A. Levin, V.N. Perezhogin, and A.N. Khmelevsky, Features of combustion product flow structure in a spherical semi-open cavity, Combustion, Explosion and Shock Waves, 1995, Vol. 31, No. 1, P. 30–36.
V.A. Levin, G.D. Smekhov, A.I. Tarasov, and A.N. Khmelevsky, Calculation and Experimental Study of the Model of Pulsed Detonation Engine, Moscow, 1998. (Preprint, SRIM MSU; No. 42-98).
I.A. Leyva, V.E. Tangirala, and A.J. Dean, Investigation of Unsteady Flow Field in a 2-stage PDE Resonator: AIAA Paper No. 2003-0715 (41st Aerospace Sciences Meeting & Exhibit, 6–9 January, 2003, Reno, Nevada), 10 p.
S. Taki and T. Fujiwara, A numerical study of detonation resonator, in: Application of Detonation to Propulsion, Eds. G. Roy, S. Frolov, and J. Shepherd, TORUS PRESS, Moscow, 2004, P. 257–261.
V.A. Levin, V.V. Markov, and A.N. Khmelevsky, Theoretical and experimental study of the operations of a pulsed detonation engine, Chemical Physics (Russian), 2005, Vol. 24, No. 7, P. 37–43.
S. Taki and T. Fujiwara, A numerical study of detonation resonator, in: Pulse and Continuous Detonation Propulsion, Eds. G. Roy and S. Frolov, TORUS PRESS, Moscow, 2006, P. 309–320.
E.Yu. Marchukov, A.I. Tarasov, and A.V. Wagner, Testing results of valveless pulse engine demonstrator and numerical simulation, in: Pulse and Continuous Detonation Propulsion, Eds. G. Roy and S. Frolov, TORUS PRESS, Moscow, 2006, P. 294–298.
V.A. Levin, N.E. Afonina, V.G. Gromov, G.D. Smekhov, A.N. Khmelevsky, and V.V. Markov, Dynamics of combustion products flow in ring nozzle with a half-closed cavity, Combustion Science and Technology, 2010, Vol. 182, No. 11–12, P. 1–16.
V.A. Levin, N.E. Afonina, V.G. Gromov, G.D. Smekhov, A.N. Khmelevsky, and V.V. Markov, Gas dynamics and thrust in the exhaust system of a jet engine with an annular nozzle, Combustion, Explosion and Shock Waves, 2012, Vol. 48, No. 4, P. 406–417.
N.E. Afonina, G.D. Smekhov, and A.N. Khmelevsky, Concentration Limits of Inflammation and Equilibrium Compositions of Products of Natural Gas Combustion in Air, Report of SRIM MSU, 2008, No. 4960.
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The work was financially supported by the Russian Foundation for Basic Research (Grants No. 11-01-00068-a and No. 12-01-90416-Ucr_a), and by the President of the Russian Federation (Grant for supporting leading scientific schools of RF, No. NSh.-5911.2012.1), and programs of RAS Presidium.
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Levin, V.A., Afonina, N.E., Gromov, V.G. et al. Investigating an annular nozzle on combustion products of hydrocarbon fuels. Thermophys. Aeromech. 20, 265–272 (2013). https://doi.org/10.1134/S0869864313030013
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DOI: https://doi.org/10.1134/S0869864313030013