A model for calculating transients in cryogenic fuel lines of modern aircraft engines


Аuthors

Aslanov A. R.1*, Kraev V. M.2**, Molchanov A. M.2***

1. Central Institute of Aviation Motors named after P.I. Baranov, CIAM, 2, Aviamotornaya str., Moscow, 111116, Russia
2. Moscow Aviation Institute (National Research University), 4, Volokolamskoe shosse, Moscow, А-80, GSP-3, 125993, Russia

*e-mail: asvar.aslanov96@mail.ru
**e-mail: kraevvm@mail.ru
***e-mail: alexmol_2000@mail.ru

Abstract

The article considers the problem associated with cryogenic fuel application for gas turbine engines. Non-stationary transient modes are peculiar to any gas turbine engine, and these modes become critical for cryogenic fuel. The most critical non-stationary operation modes of the gas turbine engine fuel system are transitions to the takeoff mode and thrust reverse switching while braking, when fuel consumption increases tenfold for several seconds. The article presents the substantiation on quasi-stationary approach application unacceptability, when stationary dependencies are being applied for non-stationary processes computing. The authors propose options for accounting for hydrodynamic instability effect on cryogenic system operation of prospective aircraft engines.

Keywords:

aircraft gas turbine engine, cryogenic fuel, non-stationary processes, hydrodynamics and heat exchange in channels

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