公开(公告)号：US20240116629A1

公开(公告)日：2024-04-11

申请号：US18478980

申请日：2023-09-29

Applicant: Archer Aviation, Inc.

Inventor： Nathan STORRS ,  Jonathan BENO

IPC: B64C29/00 ,  B64C11/32

CPC classification number: B64C29/0033 ,  B64C11/32

Abstract: A tilt propeller for a vertical takeoff and landing (VTOL) aircraft includes a linked low pitch stop (LLPS). The LLPS serves as a secondary pitch control system that is activated when a primary pitch control system fails. The LLPS may include a pitch rod coupled to a propeller blade yoke, and a mechanical coupling that correlates the tilt angle of the propeller with a pitch angle setting of the LLPS. The pitch rod may be separated by a gap from the mechanical coupling during normal operation. If the primary pitch control fails, the pitch rod is forced into contact with the mechanical coupling to close the gap and form a load-bearing path to control the pitch angle.

公开(公告)号：US20250042544A1

公开(公告)日：2025-02-06

申请号：US18477220

申请日：2023-09-28

Applicant: Archer Aviation Inc.

Inventor： Kerry MANNING ,  Nathan STORRS ,  Scott GRAVES

IPC: B64C29/00 ,  B64C11/02 ,  B64D27/24 ,  B64D27/40

Abstract: A VTOL aircraft includes a lift propeller configured to provide lift during takeoff, landing and hover operations. The lift propeller is configured to be stowed close to a boom surface when not in use during, e.g., cruise flight, to minimize drag around propeller surfaces. The lift propeller may be displaced vertically with respect to the boom when switching to a lift configuration to provide greater separation from the boom to improve lift efficiency and reduce unwanted vibrations. The lift propeller may have a fail-safe configuration that allows the propeller to move passively between lift and stowed configurations, and to fully rotate even when fully retracted.