JPH01160797A - Grounding wheel for aircraft - Google Patents

Abstract

PURPOSE: To reduce wear to a tire surface and relieve impact at the time of landing by forming a wind pressure bag which receives flying wind pressure and rotates itself when ground wheels are exposed, at its side surface so as to open and close freely. CONSTITUTION: When ground wheels 2 are exposed previously for landing an aircraft 1, a wind pressure receiving bag 3 opens, which receives flying wind pressure at its opening part 4. The ground wheels 2 rotate prior to landing, and the ground wheels 2 come into rolling contact having low frictional resistance with a runway surface when the landing is started, therefore, it is possible for the aircraft 1 to decrease the wear to the tire surface, relieve impact at the time of landing, thereby attaining smooth landing. The wind pressure receiving bag 3 opens largely when receiving wind pressure at the opening part 4, and becomes flat when receiving wind pressure at the opposite side of the opening part 4, therefore, the rotation of the ground wheel 2 in the fixed direction is conducted well. The wind pressure receiving bag 3 becomes flat without receiving the wind pressure so much at the time of starting the aircraft 1, so as to have little interference on its traveling.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a grounding wheel for an airplane that can reduce wear on the tire surface of the grounding wheel when the airplane lands on a runway and land stably. It is.

[Conventional technology]

Generally, when an airplane lands on a runway, the ground wheels change from a stopped state to a rotating state.

[Problem that the invention seeks to solve]

At this time, the ground wheels are suddenly pressed against the runway surface, and the aircraft is forced to rotate until its forward speed and rotational speed are the same.

At this time, the tires of the grounding wheels suddenly wear out, but the more they wear, the more it costs to replace and remanufacture the tires, and the more quickly the grounding wheels start rotating at high speeds, the less smooth the landing becomes. There is.

Means for Solving Problem C] The present invention solves this problem, and its configuration will be described in detail with reference to the accompanying drawings as follows.

A wind pressure receiver that rotates the ground wheel 2 by receiving flight wind pressure when the ground wheel 2 is exposed on the side surface of the ground wheel 2 of the airplane 1 is characterized by having a bag 3 attached to the ground wheel 2 so as to be openable and closable.

[Effect]

When the airplane 1 advances in the direction of the arrow in FIG. 1 and exposes the grounding wheels 2 in advance for landing, the bag 3 of the wind pressure receiver which receives the flight wind pressure at the opening 4 opens.

For this reason, the grounding wheels 2 rotate in the direction of the arrow before landing.

When landing is started in this state, the grounding wheels 2 come into rolling contact with the runway surface 5 with low frictional resistance, so that the airplane 1 can land more smoothly.

In this wind pressure receiver, when the bag 3 receives wind pressure at the opening 4, it opens wide as shown in FIG. 4, and when it receives wind pressure on the opposite side of the opening 4, it becomes flat as shown in FIG.

For this reason, the rotation of the grounding wheel 2 in a certain direction is performed satisfactorily.

In addition, the wind pressure receiver bag 3 does not receive much wind pressure when the airplane 1 starts, becomes flat, and hardly impedes its progress.

〔Example〕

The wind pressure receiver on the side of the grounding wheel 2 moves the bag 3 along the rotation direction 9
The figure shows a case in which each is provided.

The wind pressure receiver in the drawing is made up of left and right side plates 7 made of triangular thick rubber plates that can be folded at the center, a top plate 8 made of a trapezoidal slightly thin rubber plate, and a bottom plate 9 made of a rubber plate. The figure shows a case in which two partition plates 10 made of triangular thin rubber plates folded at the center are provided between the top plate 8 and the bottom plate 9.

The bottom plate 9 is fixed to the side surface of the tire 6 of the grounding wheel 2.

Furthermore, a magnet 11 is attached to the wind pressure receiver to ensure that the bag 3 can be opened and closed.

In addition, the wind pressure receiver bag 3 may be provided integrally with the tire 6,
Further, it may be provided on both sides of the tire 6.

〔Effect of the invention〕

In the present invention, when an airplane lands, when the grounding wheel is exposed, the wind pressure receiver on the side of the grounding wheel opens and closes as the bag receives the flight wind pressure, and as a result, the grounding wheel rotates in a constant rotation direction to reduce frictional resistance against the runway surface. The aircraft rotates on its own axis, and during landing, the grounding wheels rotate in the direction of rotation on the runway surface as it starts landing, which reduces the friction on the surface of the tires of the grounding wheels, thereby alleviating the shock the airplane receives when it starts landing. can do.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention, and FIG. 1 is a front view, FIG. 2 is an enlarged end view of the opening of the bag when the wind pressure receiver is in the folded state, and FIG. 3 is an enlarged end view of the opening of the bag in the folded state. B-B
Linear large side sectional view, Figure 4 shows A with the wind pressure receiver bag open.
- A large side cross-sectional view, and FIG. 5 is a usage state diagram. 1... Airplane, 2... Ground wheel, 3... Wind pressure receiver is a bag. December 17, 1986

Claims (1)

[Claims] A grounding wheel for an airplane, characterized in that a wind pressure receiving bag is attached to the side of the grounding wheel of the airplane so as to be openable and closable, and which causes the grounding wheel to rotate due to flight wind pressure when the grounding wheel is exposed.