FR2675967A1 - Inertia device recovering a force, in the same sector of a circle - Google Patents

Abstract

The invention consists in causing a device to turn on two bearings (1) from (2) to (10), then transversely to displace the inertia flywheel (8) by means of two alloy arms (4), the feature of which is to be dilated under a magnetic flux created by the coils (7). The centre of gravity moves from (11) to (14) towards the direction (13) and creates an unbalance on one side of a circle.

Description

The invention relates to an inertial device recovering a force in a same sector of a circle.

The present invention makes it possible to move a flywheel transversely, in order to create an unbalance on a given sector 0 <of circumference.

For this purpose the invention proposes a rotary device which drives in rotation a flywheel 8 whose center of gravity moves transversely under the action of a thrust force whose first characteristic and to have at least one arm 4 alloy having the property of expanding linearly under the influence of a magnetic field to create the said displacement.

According to other characteristics:
A device creating an unbalance force whose characteristic is to be directed in the same angular sector Oc of rotation according to FIG.

A device whose characteristic is the use of several arms 4.

A set of several devices fig 3 whose characteristic is the use of the synchronism of their rotation and each device rotates in the opposite direction of another device associated with it.

The displacement is achieved by two arms 4 alloy. This alloy, known, has the particularity to dilate very quickly under the influence of a magnetic field.

The linear elongation can be several mm / m with a force of several tens of kg / mm 2. This is the magnetic piezomatic effect
Figure 1 sectional view shows the flywheel 8 with the inside device for moving it.

Figure 2 shows the end-to-end view of the device with the sector where the force moves.

Figure 3 shows an end view of two identical devices synchronized and rotating in opposite direction.

The entire device fig 1 consists of:
- Two shafts 2, one of which is driven by an engine
not shown.

 - Two bearings 1 supporting the entire device.

 - A hub 3 secured to the shafts 2.

- Two arms 4 alloy, having the particularity cited
page 1, integral with hub 3 at slots 5 and
sliding in the opposite hub in places 6.

 - Two coils 7 creating a magnetic field.

- A flywheel 8 connected by a sliding axis 10
in 3 at places 9.

The entire device from 2 to 10 rotates at high speed and is perfectly balanced. The center of gravity of the whole is at point 11.

Under the effect of a magnetic field 12 outside or created by the coils 7, the arms 4 expand. Being integral with 3 they take support in the locations 5, push the steering wheel 8 and the axis 10 in the direction 13 of a value 41
The center of gravity is moved at 14 by a value dl and creates an imbalance in the direction 13.

The magnetic field is maintained in a time allowing the unbalance to move along a sector of circumference o (see fig 2. This unbalance creates a force F.

When the magnetic field stops, the arms 4 contract.

Sets 8 - 10 - 4 return to their original positions, the center of gravity returns to 11, and suppresses force F over the remainder of the circumference area, 360 -m
The clearance 15 between the hub 3 and the flywheel 8 is equal to Al. The force thus created is therefore taken up by 3 and transmitted directly to the bearing 1 during the displacement.

The movement of the steering wheel 8 is several hundred times per second. It is therefore a directed vibration, taking birth at point 14 and moving at an angle.
The device can be paired and synchronized with another device rotating in opposite direction fig3, board 2/2, connected to a base 17. This set allows to recover a resultant
R at most equal to the sum of the two forces F. These two beams of forces cancel the quantities of movements due to the rotational inertia. They originate in 14 in the direction 13 and stop in the direction 16 after having traveled a circle sector.

This resultant R allows the displacement of all vehicles and can also oppose the forces of gravitation.

the acceleration of a mobile in the vacuum can be constant and bring it to very high speeds.

Example of an associated device calculation according to FIG.

Hypothesis - Steel flywheel with rectangular section
which outside of-140 mm
inside Di = 70 mm
width 1180 mm
Mass m: 7.3 Kg with axis
rotation speed N- 30000 rpm - Arm
d = 14 mm
useful length L = 56 mm
coefficient of linear expansion C 2.5 mm / m
unit of piezomagnetic force Fp = 25 Kg / mm2
response time t <= at 10-4 seconds
angle X 120
Solution
Dilatation
L x C = 0.056 x 2.5 = 0.14 mm or 0.14 10 m
Circumferential velocity of C. of G. moving from #l.

V = #. #l. N = 0.4396 m / s
30
Unbalance force
F = m V = 7.3 x 0.4396 = 10076N ~ 1000Kg #l 0.14-10-3
In the associated devices fig 3 on the left the force F is towards the direction 13 and in the device on the right towards the direction 13 (offset malus of s)
In this position the resultant of the forces is minimum
Ra = 2 CF cos &alpha;;) = 2 (1000 x cos 120) = 1000 Kg
2 2
When the forces of the associated devices are parallel, the resultant is maximum Rb
Rb = 2F = 2 x 1000 = 2000 Kg
Actual result on a ride
R = CRa + Rb) 120 = (1000 + 2000) 120 = 500 Kg
2,360 2,360
Mechanical verification and response of a device ::
flying
Limited peripheral speed for steel <400 m / s
Vp steering wheel peripheral speed
Vp = # .De.N = # x 140 10-3 x 30000 = 220 m / s <400 m / s
60 60
Arms
Limit peripheral speed (end) with K = 1 = 7.85 (density)

Peripheral speed of an arm
Vb = # .LN = # x 56 10-3 x 30000 = 88 m / s <178 m / s
60 60
Nl stress of an arm due to centrifugal force nl = Vb. # = 882 x 7.85 = 60790 Kg / dm or 6 kg / mm t
Constraint due to F n = F x 4 = 1000 x 4 = 3.2 kg / mm
2 #rd 2 # x 14
Total stress in an arm 2 nl + n2 = 6 + 3,2 = 9.2 Kg / mm <25 Kg / mm
Angle &alpha; maximum allowed # is 1800
2
Armature dilatation response time <10-4s in turn sector
Nt360 = 30000 x 10-4 x 3600 = 18
60 60
Angular sector interested in displacement 1200 + 2 x18 = 156 <1800

Claims (4)

 in the same angular sector of rotation.  unbalance whose characteristic is to be directed  magnetic field to create said displacement 2) Device according to claim 1 creating a force  to dilate linearly under the influence of a  controlled by at least one arm (4) alloy having the pro  versally under the action of a pushing effort ,, carac  inertia (8) whose center of gravity moves trans  1) Rotary device which drives a steering wheel in rotation 3) Device according to one of claims 1 or 2, ca  characterized by the use of several parallel arms (4). 4) Set of several devices following one of the re  from 1 to 3, characterized by the use of the  synchronism of their rotation and of which each device  turns in the opposite direction of another device that is  associated.