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Aircraft

An aircraft and axis technology, which is applied in the field of aircraft, can solve the problems of loss of stability of rolling bearings, overload of rolling bearings, and increased assembly clearance.

Pending Publication Date: 2021-08-06
LEONARDO SPA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0033] In particular, if the temperature of the inner ring is higher than that of the outer ring, the assembly gap will tend to close, causing the rolling bearing to be overloaded
[0034] Conversely, if the temperature of the outer ring is higher than that of the inner ring, the assembly clearance will increase, causing the rolling bearing to lose stability

Method used

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Examples

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Embodiment Construction

[0055] exist figure 1 In , the reference numeral 1 is used to indicate an aircraft, more specifically, a reversible thrust aircraft.

[0056] Aircraft 1 mainly includes:

[0057] - a fuselage 2 having a longitudinally extending axis A between a nose 2a and a tail section 2b, along which the nose 2a and the tail section 2b are opposite each other;

[0058] - a pair of half-wings 3 extending cantilevered from opposite sides of the fuselage 2 and transverse to the axis A;

[0059] - a pair of nacelles 4; and

[0060] - a pair of rotors 5.

[0061] In more detail, as figure 2 As shown, each rotor 5 mainly includes:

[0062] - motor 6;

[0063] - drive shaft 7 rotating about axis B;

[0064] - the hub 8 rotated by the drive shaft 7; and

[0065] - a plurality of hinged blades 9 on the hub 8 .

[0066] The nacelle 4 is tiltable about an axis C related to the half-wing 3 .

[0067] Axis C is transverse to axes A and B.

[0068] Aircraft 1 can optionally be set to:

[006...

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PUM

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Abstract

An aircraft (1) is described comprising: a support element (16; 16'); a shaft (12; 12') rotating about an axis (E, E'); a pair of oblique rolling bearings(17; 17') mounted so as to couple the shaft (12; 12') to the support element (16; 16') rotatingly about the axis (E, E'); the rolling bearings (17; 17') comprising: respective first races (18, 19; 18', 19') cooperating radially in contact with a first component (16, 12; 16', 12') defined by one from the support element (16; 16') and the shaft (12; 12'); respective second races (19, 18; 19', 18') cooperating radially in contact with a second component (12, 16; 12', 16') defined by the other from the support element (16; 16') and the shaft (12; 12'); and respective pluralities of rolling elements (20; 20') adapted to roll on the first and second races (18, 19; 18' 19'; 19, 18; 19', 18'); the aircraft (1) further comprises a pair of preloaded elastic members (21; 21'), which couple the first races 18, 19; 18', 19') to the first component (16, 12; 16', 12') respectively, axially and in an elastically yielding manner.

Description

[0001] Cross References to Related Applications [0002] This application claims priority from European Patent Application No. 18215247.0 filed on December 21, 2018, the entire content of which is hereby incorporated by reference. technical field [0003] The present invention relates to an aircraft, and more particularly to a thrust reversible aircraft, namely a convertiplane. [0004] The invention also relates to a method of operating an aircraft. Background technique [0005] As we all know, reverse thrust aircraft are hybrid aircraft with tilt rotors. [0006] In more detail, a reverse-thrust aircraft is an aircraft capable of optionally assuming a "fixed-wing aircraft" configuration in which the rotors are arranged with their respective first axes substantially parallel to the second axis of the reverse-thrust aircraft. The longitudinal axis, or alternatively assumes a "helicopter" configuration in which the rotors are arranged with their respective first axes substa...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B64C27/28F16C19/54F16C25/08
CPCB64C27/28F16C19/542F16C19/543F16C19/547F16C19/548F16C25/083F16C2326/43B64C29/0033F16C19/18B64D35/00
Inventor 达尼埃莱·波达安德烈亚·加布里埃利罗伯托·雷戈尼尼费代里科·蒙塔尼亚斯特凡诺·波吉
Owner LEONARDO SPA