Abstract
Electrical aspects of aircraft jet engine operation are considered. A phenomenon previously observed experimentally, namely, the disappearance of the engine current and alternating electric signal induced by the engine jet in the afterburner regime, is explained. It is shown that this phenomenon results from the “detachment” of electrons from negative ions when the gas temperature in the afterburner increases. This leads to an increase in the effective conductivity of the gas. As a result, the engine current circuit is closed on the internal duct walls and engine charging becomes insignificant.
A physico-mathematical model of the electrical processes in the afterburner is formulated and model problems are solved.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
REFERENCES
I. M. Imyanitov, Aircraft Charging in Clouds and Precipitation [in Russian], Gidrometeoizdat, Leningrad (1970).
A. B. Vatazhin, V. I. Grabovskii, V.A. Likhter, and V. I. Shul'gin, Electrogasdynamic Flows [in Russian], Nauka, Moscow (1983).
R. P. Couch, “Detecting abnormal turbine engine deterioration using electrostatic methods,” AIAA Paper, No. 1473 (1978).
A. B. Vatazhin, D.A. Golentsov, V.A. Likhter et al., “Non-contact electrostatic engine diagnostics: Theoretical and laboratory simulation,” Izv. Ros. Akad. Nauk, Mekh. Zhidk. Gaza, No. 2, 83 (1997).
J. Lawton and F. J. Weiberg, Electrical Aspects of Combustion, Clarendon Press, London (1969).
N. I. Kidin and G. M. Makhviladze, “Electric field of a laminar flame with a high degree of ionization,” Fiz. Gor. Vzryva, 12, 865 (1976).
K. E. Ulybyshev, “Electric structure of the combustion front in a homogeneous methane-air mixture,” Izv. Ros. Akad. Nauk, Mekh. Zhidk. Gaza, No. 1, 3 (1998).
K. E. Ulybyshev, “Calculation of the effect of a uniform electric field on the gas dynamics and emission of nitric oxides in a laminar diffuse flame,” Izv. Ros. Akad. Nauk, Mekh. Zhidk. Gaza, No. 1, 48 (2000).
A. B. Vatazhin and K. E. Ulybyshev, “Model of electric current formation in aircraft jet engine ducts,” Izv. Ros. Akad. Nauk, Mekh. Zhidk. Gaza, No. 5, 139 (2000).
A. B. Vatazhin and K. E. Ulybyshev, “Diffusion and electrical processes in the turbulent boundary layer and in the neighborhood of the stagnation point,” Izv. Ros. Akad. Nauk, Mekh. Zhidk. Gaza, No. 3, 102 (2001).
A. B. Vatazhin, K. E. Ulybyshev, E.K. Kholshchevnikova et al., “Electric diffusion processes on a high-temperature turbine blade and its contribution to the engine current,” Teplofizika Vysokikh Temperatur, 40, No. 3 (2002).
A. B. Vatazhin, D.A. Golentsov, V.A. Likhter et al., “Laboratory simulation of electric current formation in aircraft jet engine ducts,” Izv. Ros. Akad. Nauk, Mekh. Zhidk. Gaza, No. 2, 49 (2002).
Rights and permissions
About this article
Cite this article
Vatazhin, A.B., Ulybyshev, K.E. Theory of Disappearance of the Electric Signal Induced by an Aircraft Jet Engine in the Afterburner Regime. Fluid Dynamics 37, 762–771 (2002). https://doi.org/10.1023/A:1021328621065
Issue Date:
DOI: https://doi.org/10.1023/A:1021328621065