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Publication Title | Ulllted States Patent Joneseta]. ROTATIONAL SYSTEM FORAN EXPENDABLE GAS TURBINE ENGINE

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Search Completed | Title | Ulllted States Patent Joneseta]. ROTATIONAL SYSTEM FORAN EXPENDABLE GAS TURBINE ENGINE
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Text | Ulllted States Patent Joneseta]. ROTATIONAL SYSTEM FORAN EXPENDABLE GAS TURBINE ENGINE | 001



(12)Ulllted States Patent Joneseta].

(54) ROTATIONAL SYSTEM FORAN EXPENDABLE GAS TURBINE ENGINE

_

(75) Inventors:AnthonyJones,SanD1ego,CA(US);

MarkHarris,SanDiego,CA(US);Eric

Alexander,SanDiego,CA (US); .

PamckLydon’SanMarcos’CA(Us)

_ _ _ (73) Ass1gnee: HamiltonSundstrandCorporation,

Rockford,IL(US)

(*) Notice: Subject-toanydisclaimer,-thetermofthis patent 15 extended or adjusted under 35

U-S-C-154(1))by2656days-

(21) Appl.No.210/644,705 _

(10)PatentN0.: US 8,438,858B1 (45)DateofPatent: May 14,2013

4,538,969 A * 9/1985 Ammanneta1. ..417/407

(22) Wed‘

(51) Int.Cl. F02C3/00

Aug‘20’2003

(2006.01)

W0

(Continued) FOREIGN PATENT DOCUMENTS

WO 80/02585 11/1980

(52) US.Cl.

USPC ..............................................60/796;60/804

(58) FieldofClassi?cationSearch ..60/796i802, 60/804

PrimaryExaminer* TedKim (74)Attorney,Agent,orFirm* Carlson,Gaskey&OldsPC

(57) ABSTRACT

A rotational system for a miniature gas turbine engine includes a rotor shaft rotationally mounted to a forWard bear ing and an aft bearing. The rotor shaft is located axially With a single threaded rotor nut Which provides an axial preload maintainedbya?xedcompressorWheelandspacers.A pre load spring provides dynamic compensation for tolerance variation and undesirable axial movement during rotation of theshaft.A permanentmagnetgeneratorismountedtothe rotor shaft behind the forWard bearing to generate electrical poWer for the engine and other accessories. The rotor shaft is inertia Welded to a turbine Wheel to form a cavity Which provides a thermally conductive path aWay from the aftbear ing.A sealringmountedWithinagrooveWithintherotorshaft provides a pneumatic seal to further protect the aft bearing from thermal transfer between the turbine section and the compressor section.

8Claims,6DrawingSheets

(56)

See application ?le for complete search history.

ReferencesCited U.S.PATENT DOCUMENTS

3,321,912 A 3,527,055 A 3,626,694 A 3,678,306 A 3,705,775 A 3,961,199 A 3,965,673 A 4,086,760 A 4,242,865 A 4,296,934 A 4,308,463 A 4,450,361 A 4,490,622 A

* 5/1967 Oprecht ......................... 60/804 9/1970 Rego

* 12/1971 Holste ............................ 60/793 7/1972 Garniereta1.

12/1972 Rioux 6/1976 Bronicki 6/1976 Friedrich

* 5/1978 Chute ............................ 60/804 1/1981 Harrisonetal.

* 10/1981 Atkin ........................... 277/411 12/1981 Giraseta1.

5/1984 Holt 12/1984 Osborn

ELECTRICAL SYSTEM

LS

4,743,776 A 4,769,993 A

5,014,508 A 5,201,798A

5,237,817A

5/1988 Baehlereta1. 9/l988 Kawamum

5/1991 Lifka 4/1993Hogan

8/1993 Bornemiszaeta1.

5,906,096 A 5,927,066A

5/l999 Sigaeta1‘ 7/1999 Shekletoneta1.

US008438858B1

2

,, 0eea.

13“ t l

5,526,640A * 6/1996 Brookseta1...60/804

5,555,722 A 5,558,502A

5,577,380A 5,722,228 A

9/1996 Mehr-Ayineta1. 9/1996 Fukazawaet31,

11/1996 Shekletonet31. 3/1998 Lampe eta1.

, , 2 i 1?; ge?norusreta.~~~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.

Image | Ulllted States Patent Joneseta]. ROTATIONAL SYSTEM FORAN EXPENDABLE GAS TURBINE ENGINE



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