RU2473456C1 - Vertical lift propulsor - Google Patents

Abstract

FIELD: transport.

SUBSTANCE: invention relates to aircraft engineering. Proposed propulsor comprises housing, drive shaft, and vertical shafts. Propulsor rectangular housing accommodates two identical lifting elements arranged one above another. Every said lifting element comprises rectangular box arranged with its open part directed upward. Several pairs of hollow cylindrical drums running in bearings parallel with each other are fitted at top section of said box. In a pair, drums are arranged aligned one after another. The number of drums is not limited. Gear is fitted on shaft of every drum. Idle gears are fitted between said gears, each being engaged with two gears of adjacent drums. Distance between drums makes 0.3-0.5 mm. Bevel gears and drum vertical shafts of lower lifting elements are engaged with drums of upper lifting elements. Drums of one lifting elements run in one direction. Porous elastic and wear-resistant pad is fitted inside aforesaid boxes to get in contact with drum lower surfaces and box bottom.

EFFECT: higher operating performances.

8 dwg

Description

The invention relates to mechanical engineering and may find application as a mover of vertical lift on aircraft heavier than air.

A lifting turbojet engine is known, comprising a cylindrical type housing, inside of which a vertical shaft is mounted on bearings, at the upper end of which a six-stage compressor is fixed, and a single-stage gas turbine is fixed at the lower end. A straightening apparatus is fixed in the upper part of the housing, and in the lower part there are: a combustion chamber with a fuel supply nozzle, an ignition system and a compressed air supply pipe to the blades of the gas turbine of the launch system.

/Aviation. Encyclopedia / Ch. ed. G.P. Svishchev, Big Russian Encyclopedia, M., 1994, p. 427 /.

The disadvantages of a turbojet engine are: high fuel consumption, the devastating effect of a hot gas stream on the environment, short duration, increased fire hazard.

These disadvantages are due to the design of a turbojet engine.

Also known is a vertical-lift propulsion vehicle, comprising a cylindrical-type housing having a protective grill in the upper part and an axial air blower with a straightening apparatus inside, connected by a vertical shaft to a gearbox mounted inside the housing in its lower part.

/ U.S. Patent and 3276528, cl. 180-119, published on October 4, 1966, FIGS. 5 and 16 /.

Known propulsion vertical lift according to US patent No. 3276528, as the closest in technical essence and achieved useful result, adopted as a prototype.

The disadvantages of the known propulsion vertical lift according to US patent No. 3276528, adopted as a prototype, are: the devastating effect on the environment of a jet of air leaving the nozzle, low load capacity with significant input power.

These drawbacks are due to the design of the vertical lift mover.

The objective of the present invention is to improve the technical characteristics of the propulsion vertical lift.

The technical result is ensured by the fact that in a vertical lift mover comprising a housing, a drive shaft, vertical shafts, according to the invention, the housing is made rectangular, open at the top and bottom, inside of which two, identical on each other, are mounted on brackets at a certain distance from its walls. structures, lifting elements, each of which is a rectangular box installed with the open part up, in the upper part of which are mounted horizontally one next to the other on bearings, on at the same height, several pairs of cylindrical hollow drums symmetrically to each other, the longitudinal axes of which are parallel to each other, arranged in pairs coaxially one after another, the number of which is unlimited, a gear is installed on the shaft of each of them, and intermediate gears are placed between the gears of the drums mounted on axes mounted on boxes, each of which engages with two gears of two adjacent drums, the drive shaft being connected to the shaft of one pair of lower lift drums of the second element, in addition, the shaft of one of the drums of the lower lifting element is connected by means of two bevel gears, vertical shafts and two other bevel gears to the shaft of one of the drums of the upper lifting element, in addition, a porous, elastic and resistant inserted into the rectangular box of both lifting elements abrasion cushion in contact with the lower surfaces of the drums and the bottom of the box, and all the drums of one lifting element are mounted to rotate in the same direction, distance e between two drums no more than 0.3-0.5 mm.

The invention is illustrated by drawings, where:

figure 1 - shows a General view of the mover of vertical lift;

figure 2 is a view of the mover vertical lift from above;

figure 3 is a view of the mover of vertical lift from the side with a partial section;

figure 4 is a side view of the upper and lower lifting elements;

figure 5 is a top view of the upper lifting element with a partial section;

figure 6 - diagram of the drive drums of the upper lifting element;

Fig.7 is a top view of the lower lifting element with a partial section;

on Fig is a diagram of the occurrence of lifting force on the lifting element.

The vertical lift mover comprises a rectangular housing 1, open above and below, inside of which, on the brackets 2, at a certain distance from the walls of the housing and from each other, two lifting elements 3 are fixed one above the other, of the same construction. Each of them is a rectangular box 4, installed with the open part up. In the upper part of the rectangular box mounted on bearings horizontally one next to the other, symmetrically on one line several pairs of hollow drums 5 of a cylindrical shape. The number of reels is not limited. The longitudinal axis of the drums are parallel to each other. A gear 7 is installed on the shaft 6 of each of the drums. All the gears of the drums are interconnected by intermediate gears 8 engaged with them, mounted on the fixed axles 9, mounted on a box. The drive shaft 10 is connected to the shaft of one pair of drums. In a pair, two drums are interconnected coaxially one after another. The lower lifting element by means of bevel gears 11, 12, vertical shafts 13 with a coupling 14 and bevel gears 15, 16 is connected to the shafts of the drums of the upper lifting element. A porous, resilient, abrasion-resistant cushion 17 is inserted inside the rectangular box of the lifting element and is in contact with the lower surfaces of the drums on one side and the bottom of the rectangular box on the other. All drums are made of lightweight and durable material and are installed with the possibility of rotation in the same direction. The distance between two adjacent drums should not exceed 0.3-0.5 mm.

The propulsion of the vertical lift as follows.

When the drums 5 of the vertical lift mover are stationary, the air pressure on the upper surfaces of the drums and on the outer surface of the bottom of the box 4 is the same and no lifting force occurs. When the drive shaft 10 rotates, the torque through the gears 7 and the intermediate gears 8 is transmitted to the shafts 6 and, accordingly, to the drums 5, which rotate in the same direction, as shown in figure 8 by arrows. At the same time, through the bevel gears 11, 12, the vertical shafts 13 with the clutch 14 and the bevel gears 15, 16 are driven into rotation and the drums 5 of the upper lifting element 3. The upper drums rotate in one direction, the lower ones in the opposite direction. Air masses adhering to the surfaces of the drums 5, as well as due to friction, are captured by them and move from one drum to another, etc. As a result, on the upper surfaces of the drums 5, a boundary layer of air M is moving at a speed υ. It is known from aerodynamics that the pressure on a surface along which the boundary layer of air moves is always less than the pressure on the surface on which the air is stationary. Therefore, the air pressure P ₁ on the outer surface of the drums 5 will be less than the pressure P on the outer surface of the bottom of the box 4. The difference between these pressures will be the lifting force F, the value of which can be changed by changing the speed of the drive shaft 10 and, accordingly, the drums 5. Lifting force upper and lower lifting elements 3 is folded. Pillow 17 prevents airflow around the lower surfaces of the drums.

The invention improves the performance of the propulsion vertical lift.

Claims (1)

A vertical lift mover comprising a housing, a drive shaft, vertical shafts, characterized in that the housing is rectangular, open at the top and bottom, inside of which two lifting elements, identical in design, are fixed to the brackets at some distance from its walls, each of which represents a rectangular box installed with the open part upwards, in the upper part of which are mounted horizontally symmetrically to each other on bearings horizontally one next to the other at the same height only pairs of cylindrical hollow drums, the longitudinal axes of which are parallel to each other, arranged in a pair coaxially one after another, the number of which is not limited, a gear is installed on the shaft of each of them, and intermediate gears are mounted between the gears of the drums mounted on the axes mounted on the boxes , each of which engages with two gears of two adjacent drums, and the drive shaft is connected to the shaft of one pair of drums of the lower lifting element, in addition, the shaft of one of the drums the bottom lifting element by means of two bevel gears of the vertical shafts and two other bevel gears is connected to the shaft of one of the drums of the upper lifting element, in addition, a porous, elastic and abrasion-resistant pillow is inserted into the rectangular boxes of both lifting elements in contact with the lower surfaces of the drums and the bottom box, and all the drums of one lifting element are mounted for rotation in the same direction, the distance between the two drums is not more than 0.3-0.5 mm

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