Evaluation of the energy efficiency of heat addition upstream of the body in a supersonic flow
A. F. Latypov, V. M. Fomin
Institute of Theoretical and Applied Mechanics,
Siberian Division, Russian Academy of Sciences, Novosibirsk 630090
Abstract
Criteria for evaluating the energy
efficiency of heat addition upstream of
the body in a supersonic gas flow are
obtained. Based on the functional
objectives of flying vehicles and the
thermodynamic model of the process,
estimates are obtained for missile- and
aircraft-type vehicles. The minimum Mach
numbers at which heat addition upstream
of the body is reasonable are evaluated.
The increase in the flight range in the
cruising regime for an aircraft-type
vehicle and on the active trajectory for
a missile-type vehicle is evaluated.
Estimates for fuel economy in launching
an aerospace plane into an Earth orbit
are given. It is shown that a
significant part of the fuel should be
spent on producing energy for gas
heating in order to obtain a noticeable
effect. The minimum necessary
"efficiency" of conversion of the fuel
energy into the gas-heating energy is
evaluated.
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