Methods and systems for operating aircraft landing gears

A technology for aircraft landing gear and aircraft systems, which is applied to chassis and other directions, and can solve problems such as cost increase and aircraft performance degradation

Active Publication Date: 2007-03-28
THE BOEING CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

One downside of this approach, however, is the increased cost of a larger hydraulic system
Another drawback is the reduction in aircraft performance due to the added weight of the larger hydraulic system

Method used

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  • Methods and systems for operating aircraft landing gears
  • Methods and systems for operating aircraft landing gears
  • Methods and systems for operating aircraft landing gears

Examples

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Embodiment Construction

[0014] The following describes methods and systems for retracting aircraft landing gear. Certain details are set forth in the following description and in Figures 1-4 to provide a thorough understanding of various embodiments of the invention. Other details of well-known structures and systems related to aircraft and aircraft landing gear systems are not described in the following content to avoid unnecessary obscuring the description of the various embodiments of the present invention.

[0015] Many of the details, dimensions, angles and other features shown in the figures are illustrative only of specific embodiments of the invention. Accordingly, other embodiments may have other details, dimensions and features without departing from the spirit or scope of the invention. Additionally, other embodiments of the invention may be practiced without some of the details below.

[0016] In the figures, the same reference numerals represent the same or at least substantially the s...

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PUM

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Abstract

Methods and systems for performing landing gear operations. In one embodiment, a method for retracting a landing gear is useable with an aircraft having a gear door (128) that at least partially covers a gear well when the landing gear (120) is extended. The method can include receiving a first signal during movement of the aircraft down a runway for takeoff. The first signal can correspond to at least a first aspect of motion of the aircraft, such as upward rotation of the aircraft for liftoff. The gear door (128) can be opened in response to receiving the first signal. The method can further include receiving a second signal after the aircraft has lifted off of the runway. The second signal can correspond to a second aspect of motion of the aircraft, such as the aircraft achieving a positive rate of climb. In response to receiving the second signal, the landing gear (120) can be retracted into the gear well.

Description

technical field [0001] The present invention relates generally to aircraft landing gear systems and, more particularly, to methods and systems for retracting aircraft landing gear. Background technique [0002] Conventional jet transport aircraft typically include retractable landing gear to reduce aerodynamic drag during flight. Such undercarriages can be deployed downwards from the wing or fuselage for landing and can be retracted upwards into the corresponding undercarriage wells for flight. Many aircraft also include at least some form of gear door for closing the gear well when the gear is in the deployed position. When closed, these gear well doors protect the systems inside the gear well from damage from foreign matter during takeoff and landing and reduce noise and drag. In the following disclosure, unless stated otherwise, the term "undercarriage door" refers to a door of a gear well which at least partially covers the undercarriage after deployment of the respect...

Claims

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Application Information

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IPC IPC(8): B64C25/18B64C25/16B64C25/22B64C25/28
CPCB64C25/28B64C25/18B64C25/16B64C25/22
Inventor 加里·M·林达尔史蒂文·J·特罗特
Owner THE BOEING CO
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