Ram air turbine generator assemblies

Patent metadata

Field	Value
Publication number	US-9527600-B2
Application number	US-201414280589-A
Country	US
Kind code	B2
Filing date	May 17, 2014
Priority date	May 17, 2014
Publication date	Dec 27, 2016
Grant date	Dec 27, 2016

Abstract

A ram air turbine having a turbine with one or more blades, a strut having a drive section and a generator adapter section, a turbine shaft and bevel gear located within the drive section, a generator positioned within the generator adapter section of the strut and comprising an exciter and permanent magnet generator in the a turbine side, and a driveshaft having a pinion gear that engages with the bevel gear, wherein the driveshaft is removably coupled to the generator. The strut includes a cone positioned between the drive section and the generator adapter section, and the permanent magnet generator and the exciter are positioned inside of the cone of the strut. The generator utilizes a generator cover and a generator bearing, and the bearing engages with the driveshaft and the generator. The permanent magnet generator and the exciter are positioned within the cone of the generator cover.

First claim

What is claimed is:

1. A ram air turbine comprising:
a turbine comprising a blade;
a strut removably coupled to the turbine and comprising a drive section, a gearbox section, and a generator adapter section, wherein the gearbox section comprises a turbine shaft and bevel gear;
a generator positioned within the generator adapter section of the strut and comprising a turbine side, wherein an exciter is positioned at the turbine side of the generator, and wherein a permanent magnet generator is located at least partially within a stator of the exciter, and
a driveshaft having a pinion gear that engages the bevel gear, wherein the driveshaft is removably coupled to the generator,
wherein the strut comprises a cone position between the drive section and the generator adapter section, and wherein the permanent magnet generator and the exciter are positioned within the cone of the strut.

2. The ram air turbine of claim 1 , wherein a ratio of a distance from the blade to a projected radius of the generator adapter section of the strut is greater than 3.

3. The ram air turbine of claim 1 , wherein the generator further comprises a generator cover and a generator bearing.

4. The ram air turbine of claim 3 , wherein the generator bearing engages with and maintains the relative positions of the driveshaft and the generator.

5. The ram air turbine of claim 4 , wherein the generator cover has a driveshaft pilot diameter and a generator pilot diameter.

6. The ram air turbine of claim 3 , wherein the generator cover comprises a cone.

7. The ram air turbine of claim 6 , wherein the permanent magnet generator and the exciter are positioned within the cone of the generator cover.

8. The ram air turbine of claim 1 , wherein the permanent magnet generator and the exciter are positioned within and on the same side as a main stator of the generator.

9. A generator for use in a ram air turbine comprising:
an exciter;
a permanent magnet generator, wherein the generator comprises a turbine side, the exciter is positioned at the turbine side of the generator, and the permanent magnet generator is located within a stator of the exciter;
a generator cover; and
a generator bearing, wherein the permanent magnet generator and the exciter are positioned within a cone of the generator cover.

10. The generator of claim 9 , wherein the generator bearing engages with and maintains the relative positions of a driveshaft and the generator.

11. The generator of claim 10 , wherein the generator cover has a driveshaft pilot diameter and a generator pilot diameter.

12. The generator of claim 10 , wherein the permanent magnet generator and the exciter are positioned within a main stator of the generator.

13. The ram air turbine of claim 1 , wherein the gearbox section includes a cover removably coupled to the gearbox section, the cover being located at an opposite end of the gearbox section from the turbine.

14. The generator of claim 9 , wherein the exciter is located at least partially surrounded by a main stator of the generator.

15. The generator of claim 9 , wherein the cone of the generator cover is located within a cone-shaped portion or a strut.

Assignees

• Hamilton Sundstrand Corp

Inventors

• Russ David
• Bortoli Stephen
• Baldwin Jeffrey

Classifications

• F03D9/25

  the apparatus being an electrical generator (F03D9/22 takes precedence) · CPC title

• F03D9/32

  on moving objects, e.g. vehicles · CPC title

• F05B2220/31

  in ram-air turbines ("RATS") · CPC title

• F03D15/10

  using gearing not limited to rotary motion, e.g. with oscillating or reciprocating members · CPC title

• B64D41/007 Primary

  Ram air turbines · CPC title