US 11,719,119 B1
Aircraft with ram air turbine disk with generator having blade shroud ring integrated magnets
Peter M. Schenk, Greenwood, IN (US); Rigoberto Rodriguez, Avon, IN (US); and David Locascio, Indianapolis, IN (US)
Assigned to Rolls-Royce Corporation, Indianapolis, IN (US)
Filed by Rolls-Royce Corporation, Indianapolis, IN (US)
Filed on Mar. 23, 2022, as Appl. No. 17/702,757.
Int. Cl. F01D 15/10 (2006.01); F01D 5/14 (2006.01); F01D 11/12 (2006.01); B64D 41/00 (2006.01); F04D 29/18 (2006.01); H02K 7/18 (2006.01); H02K 1/2706 (2022.01); H02K 1/276 (2022.01)
CPC F01D 15/10 (2013.01) [B64D 41/007 (2013.01); F01D 5/147 (2013.01); F01D 11/122 (2013.01); F04D 29/186 (2013.01); H02K 1/2706 (2013.01); H02K 1/276 (2013.01); H02K 7/1823 (2013.01); F05D 2220/34 (2013.01); F05D 2220/768 (2013.01); F05D 2240/307 (2013.01); F05D 2260/232 (2013.01); F05D 2260/30 (2013.01)] 20 Claims
OG exemplary drawing
 
1. An aircraft comprising
a propulsion system configured to produce thrust for driving the aircraft during operation,
an accessory system electrically de-coupled from the propulsion system so as not to directly draw power from the propulsion system, and
a ram air turbine power system electrically coupled to the accessory system to provide energy for use by the accessory system, the ram air turbine power system including
a turbine case that extends around a central axis,
a turbine rotor mounted for rotation about the central axis with an outer diameter in confronting relation with the turbine case, an inner diameter spaced radially inward of the outer diameter, and airfoils arranged between the outer diameter and the inner diameter, wherein each airfoil extends from a base radially outward to a tip thereof, and
an accessory generator including a stator and a magnet ring, the stator being coupled with the turbine case and axially aligned with the airfoils of the turbine rotor, the stator including a plurality of stator windings, the magnet ring including a band and a plurality magnets, the band extends circumferentially at least partway about the central axis and is coupled to the tip of at least two airfoils included in the plurality of airfoils, and the plurality of magnets being coupled with the band so that, upon rotation of the magnet ring with the turbine rotor, electrical power is generated for use by the accessory system,
wherein the plurality of magnets includes a first magnet and a second magnet spaced apart axially from the first magnet and aligned circumferentially and radially with the first magnet, the band of the magnet ring includes a strip of abradable material located axially between the first magnet and the second magnet, and the stator includes an inner wall and a knife-seal that extends radially away from the inner wall and into the strip of abradable material.