Schaufel für einen Lüfter eines Mantelstrommotors

Details

Veröffentlichungs-Nr.

EP4717924

Anmeldetag

25. März 2024

Veröffentlichung

1. April 2026

Rechtsraum

EP

IPC

F04D29/32

Abstract

The invention relates to a blade (10) for a fan (20) of a ducted engine (30) of an aircraft (100), the fan (20) being located in an engine duct (34) between an engine inlet section (32) and an engine outlet section (36), wherein the blade (10) comprises a blade body (12) having an aerodynamic shape to generate a propelling force and extending from a blade root (14) to a blade tip (16), and wherein the blade body (12) comprises an aerodynamic profile (AP) comprising a leading edge (LE) and a trailing edge (TE) defining a chord line (CHL) and further comprising an upper profile (UP) and a lower profile (LP) defining a camber line (CAL), and wherein the tangent (T) at the leading edge (LE) to the camber line (CAL) defines a leading edge direction (LED) for the leading edge (LE), the leading edge (LE) having an incidence angle (IA) to a flow direction (FD) of the ducted engine (30), characterised in that the blade body (12) comprises a tip section (17) at the blade tip (16) having the aerodynamic profile (AP) with the tip incidence angle (TIA) being smaller than an optimum incidence angle (OIA) of the aerodynamic profile (AP).

Anmelder

Firmen

Archer Aviation Inc.
Archer Aviation, Inc.
Lilium GmbH

Land

🇺🇸 USA