公开(公告)号：US20210122465A1

公开(公告)日：2021-04-29

申请号：US17080145

申请日：2020-10-26

Applicant: ROLLS-ROYCE plc

Inventor： Chana A. SAIAS ,  Vasileios PACHIDIS

IPC: B64C29/00 ,  B64C11/00 ,  B64C9/00 ,  B64C39/08 ,  B64D27/24 ,  B64D41/00 ,  B64D27/10 ,  B64D35/02

Abstract: A VTOL aircraft has fixed wings and a rotor blade system for providing lift in active and passive modes thereof. Operation of the rotor blade system may be switched between the active mode in which the rotor blade system is driven by a power system of the aircraft and the passive mode in which the rotor blade system is not driven by the power system, the rotor blade system being configurable to provide lift in the passive mode during forward flight of the aircraft. The rotor blade system provides lift in the passive mode, allowing the fixed wings to be shorter than in the case where the rotor system provides lift during vertical take-off and landing but otherwise has no function, thus providing aircraft which is lighter, more compact and more efficient than similar aircraft of the prior art.

公开(公告)号：US20210031909A1

公开(公告)日：2021-02-04

申请号：US16930008

申请日：2020-07-15

Applicant: ROLLS-ROYCE plc

Inventor： Vasileios PACHIDIS ,  Chana A. SAIAS

IPC: B64C27/473 ,  B64C29/00 ,  B64C7/00 ,  B64C39/06 ,  B64C9/00

Abstract: A lift rotor arrangement (100) for a VTOL aircraft (200). The lift rotor arrangement (100) comprises: a fairing (6) mounted on a wing segment (10); and first and second rotor blades (17, 18) mounted on a first shaft (4) extending vertically from the fairing (6). The first shaft (4) is movable between an extended position in which the first and second rotor blades (17, 18) are vertically spaced above the wing segment (10) and are rotatable to provide vertical lift, and a retracted position in which the first and second rotor blades (17, 18) are rotationally-fixed with the first rotor blade (17) stowed within the wing segment (10). The blades (17, 18) may be rotatable around an axis substantially perpendicular to the axis of the respective first shaft (4) so as to act as ailerons/elevons in the retracted position.