U.S. patent application number 12/896293 was filed with the patent office on 2011-09-29 for rotor platform of aerodynamic force and method of aerodynamic force generation.
Invention is credited to Oleg Vyacheslavovich Klimov, Vyacheslav Stepanovich Klimov.
Application Number | 20110236207 12/896293 |
Document ID | / |
Family ID | 43402065 |
Filed Date | 2011-09-29 |
United States Patent
Application |
20110236207 |
Kind Code |
A1 |
Klimov; Vyacheslav Stepanovich ;
et al. |
September 29, 2011 |
Rotor Platform of Aerodynamic Force and Method of Aerodynamic Force
Generation
Abstract
Rotor platform of aerodynamic force is meant for generating
aerodynamic lift force in horizontal position and aerodynamic
transverse force in vertical position, with further practical
implementation as a robust power installation of transport vehicle
facilities. The principle of operation of the platform is based on
the well-known Magnus effect--generation of transverse force acting
on an object spinning in the ambient air flow. The basis of the
construction is the unit of several coplanar rotors, wherein the
rotors spinning is caused by the air flow force and the rotors
provide the summed value of the generated aerodynamic to force.
Inventors: |
Klimov; Vyacheslav Stepanovich;
(Minsk, BY) ; Klimov; Oleg Vyacheslavovich;
(Elgava, LV) |
Family ID: |
43402065 |
Appl. No.: |
12/896293 |
Filed: |
October 1, 2010 |
Current U.S.
Class: |
416/1 ;
416/120 |
Current CPC
Class: |
F03D 3/0409 20130101;
F03D 3/007 20130101; F03D 3/02 20130101; F03D 13/20 20160501; F05B
2200/23 20130101; F05B 2240/40 20130101; Y02E 10/74 20130101; F03D
80/70 20160501; F05B 2240/201 20130101 |
Class at
Publication: |
416/1 ;
416/120 |
International
Class: |
F01D 1/00 20060101
F01D001/00 |
Foreign Application Data
Date |
Code |
Application Number |
Oct 2, 2009 |
BY |
BY20091405 |
Claims
1. A rotor platform of aerodynamic force comprising identical
central and lateral rotors with load-bearing elements of
logarithmic spiral profile, characterized in that the rotation
longitudinal axis of the central rotor is fixed in the platform
frame, whereas the rotation longitudinal axes of the lateral rotors
are rigidly tied by cross-members, with the centers of the latter
ones, via bearing units, being coupled with the fixed longitudinal
axis of the central rotor.
2. A method of generating aerodynamic force by the rotor platform
according to to claim 1, characterized in that the given
aerodynamic force represents the sum of the forces generated in the
nearest to the rotor air flow, due to the flow with natural
velocity, whereas on each consequent rotor under the effect of the
flow with the summed velocity generated on each preceding rotor due
to the summation of the rotation velocity and the flow velocity,
being mathematically expressed as follows: Y = C y .rho. ( V I 2 2
+ V 1 S 2 2 + V 2 S 2 2 ) S . ##EQU00003##
Description
FIELD OF THE INVENTION
[0001] A rotor platform of aerodynamic force and a method of
aerodynamic force generation relate to wind power engineering and
are meant for generating lift and transverse aerodynamic
forces.
BACKGROUND OF THE INVENTION
[0002] It is known that aerodynamic force results from the
interaction of physical objects with the ambient air flow (1, page
484).
[0003] An airplane wing is one of the simplest well-known physical
objects generating in the ambient air flow an aerodynamic force in
the form of a lift force (2, page 505).
[0004] A wing lift force is produced owing to its unsymmetrical
form, with the air flow streaming around it to pass its curved
upper surface at the velocity larger than the velocity of the air
flow passing its flat bottom. Due to the difference in the
velocities, as per Bernoulli equation, a lift force is produced,
which value is derived via Kutta-Joukowski theorem as given
below:
Y = .rho. V .GAMMA. L = C y .rho. V 2 2 S , ( 3 , cTp . 141 - 142 )
##EQU00001## [0005] .GAMMA.--velocity circulation value; [0006]
.rho.--air density; [0007] V--windstream velocity; [0008] S--wing
surface square in plain view; [0009] L--wing length; [0010]
C.sub.y--dimensionless coefficient dependant on the physical
properties of air, the wing itself and the wing orientation against
the air flow.
[0011] A lift force Y in symbolic expression as cited above, or as
follows
A=.rho..GAMMA.VL,
as per (4, page 121) is also termed transverse and its value is
proportional to the flow velocity squared and the value of
coefficient C.sub.y .
[0012] "The value C.sub.y bears considerable importance as the
larger it is the lesser are the take-off speed and landing speed of
an airplane", i.e. the minimum air flow velocity generating the
specified lift force depends directly on the value C.sub.y. In a
particularly preferred embodiment of the wing, the value C.sub.y
does not exceed the values 1, 2 (3, pages 141-142).
[0013] It is known that the cylinder rotating around the
longitudinal axis " . . . under equal conditions creates a force 10
times larger that the wing does" (5, pages 55-57), i.e. the
coefficient C.sub.y gains the value n-order larger than that of the
airplane wing.
BRIEF DESCRIPTION OF THE DRAWINGS
[0014] FIG. 1 is a schematic representation of the rotor platform
of aerodynamic force .
[0015] FIG. 2 is a section view of the platform rotors.
DESCRIPTION OF THE INVENTION
[0016] The proposed invention is aimed at utilizing the potential
of generating aerodynamic force by the cylindrical body rotating in
air flow and creating hereon a simple and efficient technical
device capable of generating powerful lift and transverse force
suitable for practical implementation.
[0017] The schematic representation of the rotor platform of
aerodynamic force is presented in FIG. 1. The basis of the
construction is the rotor unit of identical symmetrical coplanar
central and lateral rotors with load-bearing elements of
logarithmic spiral profile, the prototype thereof being a marine
rotary wind-powered propulsion--BY No. 8234.
[0018] The rotation longitudinal axis 1 of the central rotor 2 is
fixed in the platform frame 3, whereas the longitudinal axes of the
lateral rotors 4 are rigidly tied by cross-members 5, with the
centers of the cross-members via the bearing units coupled with the
fixed rotation axis of the central rotor, which allows the firmly
inter-tied lateral rotors to repeatedly take a symmetrical position
in a single plane as per the central rotor.
[0019] It is also known that air flow flowing around the rotating
body causes circulation of the air flow around its contour, the
velocity thereof is summed up with the velocity of the flow when
they are co-directional (4, pages 100-105), which imparts
additional kinetic energy to the flow.
[0020] The essence of the invention consists in using the flow with
additional velocity to act on the consecutive rotor.
[0021] The method of generating aerodynamic force by the rotor
platform, aerodynamic force being a sum of aerodynamic forces
generated by each platform rotor, is shown in FIG. 2.
[0022] The air flow with initial velocity V.sub.1 falls on the
first rotor and sets it to rotation at the velocity V.sub.1 R.
Summation of the rotation velocity and flow velocity results in the
flow velocity that substantially exceeds its initial value
V.sub.1S=V.sub.1+V.sub.1R.
[0023] The flow further falls on the consecutive rotor at the
velocity V.sub.1S, sets it to rotation at the velocity V.sub.2R,
summation of velocities results in the velocity V.sub.2S that
renders its effect on the consequent rotor, whereby fully repeating
the previous cycle.
[0024] Thus, the value of aerodynamic force generated by the rotor
platform according to Kutta-Joukowski theorem is expressed as
follows:
Y = C y .rho. ( V I 2 2 + V 1 S 2 2 + V 2 S 2 2 ) S .
##EQU00002##
REFERENCES
[0025] 1. The Great Soviet Encyclopedia, 3.sup.rd edition., vol. 2.
[0026] 2. The Great Soviet Encyclopedia, 3.sup.rd edition., vol.
13. [0027] 3. The Great Soviet Encyclopedia, 3.sup.rd edition.,
vol. 20. [0028] 4. Prandtle L., Fluid Mechanics. M., 1951. [0029]
5. Merkoulov V. I. Hydrostatics, Known and Unknown, M., 1989 [0030]
6. Patent BY No. 8234.
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