


About 70 scientific papers. 

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The theory of square
parachute is created, describing distribution of parameters of shape,
tension and resistance to airflow of canopy in steadystate condition
for various sets of suspension line lengths and airpermeability. 

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The main parachute
aerodynamic characteristics are defined as a result of detailed experimental
investigations of parachute models (round, cross, triangular, hexagonal,
conical, square, reefing and so on) with different line lengths and
their number, geometric porosity and airpermeability, vent, central
line and so on in Wind Tunnel in the extensive range of flow velocities.
The practical recommendations for optimal parachute application are
submitted. 

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Numerical investigations of
influence of above mentioned parameters, as well as pressure distribution
over parachute canopy on its shape, drag coefficient, tension of radial
ribbons and fabric between them are carried out; areas of maximum fabric
tension are determined. 

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Character of pressure difference distribution Dp
along the different shape canopies is studied. Peculiarities of Dp,
typical for the unsymmetrical parachutes, are detected and analysed. 

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It is discovered experimentally that
a character of pressure distribution for a square canopy depends on
a particular choice of suspension line lengths. Having solved numerically
the system of differential equations of the equilibrium, it proved
possible to determine the line lengths, for which the condition
Dp
= const along total square canopy is satisfied. This result is perfectly
confirmed by the experiments. 

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It is proved possible to find the
value of geometric permeability, which improves parachute stability
actually without reducing the value of drag coefficient
(in consequence of a successive inculcating of geometric porosity on
a square canopy surface for different parameters). 

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Influence of
upstream velocity, angle of attack and another parameters on the origin
of various parachute forms instability in the deployment process and
steadystate condition is investigated experimentally. 
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