RU2299158C1 - Bogie for airfield servicing of heavy aircraft - Google Patents

Abstract

FIELD: aeronautical engineering.

SUBSTANCE: proposed bogie is used for taxing, landing, alighting run and takeoff run; it is provided with pneumatic wheels of high cargo capacity which are mounted on powerful shock absorber struts on axles forming the track which is wider than fuselage bottom; bogie is also provided with platform with electromagnets and AC sources remotely controlled from aircraft pilot's cabin. Mounted on fuselage bottom in the vicinity of center-wing section are electromagnetic attraction members which are used for fixation of aircraft on electromagnets of platform in landing.

EFFECT: reduced ballast weight of heavy aircraft in flight and reduction of drag.

4 cl, 3 dwg

Description

The invention relates to aircraft, and in particular to organs and devices of taxiing, landing, mileage and takeoff of the aircraft.

It is known in the design of an airplane glider landing gear, retractable in flight in the niche of the fuselage or the wing and fixed, but closed by a fairing to reduce the resistance of the oncoming air flow in flight.

The closest analogue (prototype) of the invention is the Patent for the invention under the name "The chassis of a wide-body aircraft." Patent RU No. 2247678, bull. No. 7, dated March 10, 2005.

The disadvantage of this prototype is the constant presence of the chassis in flight, which negatively affects its aerodynamics and flight mass, increases fuel consumption and reduces the specific gravity of the payload.

The aim of the invention is to reduce the ballast weight of the flight mass of the aircraft, the exclusion from the design of the airframe of the main landing gear with a complex mechanic and a large mass, which is the ballast in flight.

This goal is achieved by using a trolley-chassis as the main chassis of a heavy aircraft, made as an independent wheeled unit with a horizontal platform, designed to land a heavy aircraft with electromagnetic attraction elements located on the fuselage bottom located in the center of gravity (center section) of the aircraft.

The heavy aircraft landing gear with the ability to perform taxiing, landing, run and take-off take-off functions contains heavy-duty pneumatic wheels mounted on powerful suspension struts on more than three axes, forming a track wider than the bottom of the fuselage of the aircraft being serviced, a platform with electromagnets and alternating current sources remotely controlled from the cockpit of a serviced aircraft equipped with electromagnetic attraction elements mounted on the bottom of the fuselage in the area entroplana aircraft and for fixing an aircraft on the electromagnets truck-chassis platform during landing and take-off on disconnection, at the end of the run.

The chassis of the trolley chassis is equipped with reliable insulation from the influence of electromagnets mounted on its platform. The chassis truck is designed for the bottom of the fuselage of the aircraft, on which a controlled landing limiter is mounted behind the elements of electromagnetic attraction. The undercarriage is configured to provide an audible signal when electromagnets are turned on to alert the aircraft crew.

The trolley chassis receives translational motion (mileage), for example, from the speed of the plane landing on the platform, turning the trolley chassis into the main landing gear of the aircraft.

Figure 1 shows the layout of the trolley-chassis (side view).

Figure 2 - diagram of the chassis truck (top view).

figure 3 - trolley-chassis of a heavy aircraft on the runway when receiving a heavy aircraft for landing.

The trolley-chassis of the aerodrome service of a heavy aircraft (for example, type: TU-160, IL-96, AN-124, Boeing-747, A-380-800 Airbus) consists of a frame structure body 3, pneumatic wheels 1 of large carrying capacity in three rows on more than three axles 6, forming a track wider than the bottom of the fuselage 10, pivotally mounted to powerful suspension struts 2, a horizontal platform 4, electromagnets 7, insulation 5 of the housing 3, alternating current sources (batteries) 8, side lights 9 at the corners of the platform. Figure 3 shows the direction of run 13 of the aircraft, the glide path for landing 14, the point where the plane began to tear the plane 15, the point where the aircraft 16 touched the surface of the platform 4, the runway 17. A heavy aircraft, the bottom of the fuselage 10 of which is in the center section ( the center of gravity of the aircraft) is equipped with elements of electromagnetic attraction 11 on the electromagnets of the trolley-chassis 7, behind the elements 11 there is a controlled support limiter 12.

Using the trolley-chassis of a heavy aircraft.

1. When receiving a heavy aircraft for landing. The undercarriage by the aerodrome service is installed on the runway at the landing site of the aircraft. Piloting the aircraft is carried out by traditional methods, it is possible to use the display from the cameras. The pilot at the start of the plane’s landing level alignment remotely by radio turns on the power supply of the electromagnets on the platform of the undercarriage, the inclusion of which receives an audible signal. When the aircraft lands, due to the fixing of the trolley-chassis to the bottom of its fuselage, the trolley-chassis becomes an organ that performs the functions of the main landing gear of the aircraft.

2. When the aircraft takes off, at the end of its take-off, the electromagnets of the aircraft crew turn off and the trolley-chassis detaches from the electromagnetic attraction elements of the aircraft. The trolley-chassis remains on the runway and the aerodrome maintenance service is transported to its starting position for landing another heavy aircraft, for example, the A-380-800 Airbus, if it is modified to use the heavy-lift truck’s landing gear.

Claims (4)

1. The trolley-chassis of a heavy aircraft with the ability to perform taxiing, landing, run and take-off take-off functions, characterized in that it contains heavy-duty pneumowheels mounted on powerful suspension struts on more than three axles, forming a track wider than the bottom of the fuselage of the aircraft being serviced, a platform with electromagnets and alternating electric current sources remotely controlled from the cockpit of a serviced aircraft equipped with electromagnetic attraction elements installed on the bottom of the fuselage in the area of the center section of the aircraft and designed to fix the aircraft on the electromagnets of the platform of the trolley-chassis during landing and disconnect on takeoff, at the end of the takeoff run. 2. The chassis truck according to claim 1, characterized in that its housing is provided with reliable insulation from the influence of electromagnets mounted on its platform. 3. The chassis truck according to claim 1, characterized in that it is designed for the bottom of the fuselage of the aircraft, on which a controlled support is mounted behind the elements of electromagnetic attraction - landing limiter. 4. The truck chassis according to claim 1, characterized in that it is configured to supply an audio signal when electromagnets are turned on.

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