VALVE FOR DIVERTING FLUID FLOWS IN TURBOMACHINES
Assignee
ROLLS-ROYCE PLC, 65 BUCKINGHAM GATE, LONDON SW1E 6AT, ENGLAND
Filed
Jun 15, 1989
Granted
May 23, 1995
Location
BRISTOL EN GB
Abstract
This invention provides a valve for diverting fluid flow in a tandem fan type engine. The valve comprises an axially displaceable sleeve 38 which is provided with two circumferentially extending sealing lands 40, 42 which in operation cooperate with two locating surfaces 50, 52 provided on the duct 22 between the first and second compressors 20, 24 of said engine to seal an outlet opening 36. The free unsprung length between the sealing lands 40, 42 is greater than the length between the locating surfaces 50, 52. Gas pressure is used to compress a contractable portion 54 in said sleeve and hence ensure sealing takes place between both pairs of locating surfaces and sealing lands. This apparatus ensures centralisation of the upstream and downstream ends of the sleeve 38 is independently obtainable and accommodates thermal expansion differentials between the sleeve 38 and the duct 22.
Source: Google Patents
35 USC §181 Secrecy Order
Imposed
Oct 24, 1989
Rescinded
Sep 19, 1994
Duration
4 years, 11 months
Inventor
- 1CLIFFORD S. WOODWARD
Record Details
- Patent number
- US 5417055
- Application
- 07371446
- Aerospace match
- No
- Dataset source
- 35 USC §181 SO records