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Алгоритм обработки измеряемых многокомпонентными тензовесами сил и моментов...
Processing algorithm
of the
forces and moments measured
by
multicomponent
tensives
on a model
of
objects
with air-cushion undercarriage when tested
in
altitude tunnel
on a dynamic
installation
near
the screen
© V.N. Naumov
2
, K.V. Rarpenko
1
, Yu.Yu.Merzlikin
1
, A.S. Menshikov
1
1
Central Aerohydrodynamic Institute, NIMK TsAGI, Moscow, 105005, Russia
2
Bauman Moscow State Technical University, Moscow, 105005, Russia
We propose a method of
load
-sharing which affects in a
stream of the
altitude tunnel
on the large-
scale models
of
aircraft
with
air-cushion undercarriage during experiments
carried out on the screen when the models were vibrating on dynamic bench, measuring
height, roll, pitch and yaw. We share loads on the groups of external forces and moments:
aerodynamic ones,
on the main engine of the power plant
, the input pulse in the fan of
discharge apparatus, of the air cushion, elements of flexible fence when contacting with the
surface of the runway. The loads of the model are measured using multicomponent tensives.
The division of the loads on the components allows to choose optimal parameters of
aircraft elements. The processing algorithm of the tensively measured forces and moments
eliminates interference of indication channels of tensives from each other and identifies
all major components of the steady and unsteady aerodynamic derivatives required for
the formation of the mathematical model of stability and controllability of these objects in
different modes of their movement.
Keywords
: coefficient of forces, coefficient of moments, experimental set-up, significant
complexes of derivatives, harmonic vibrations of the model.
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