Combustion heated air turbine starter system

Patent · Tue Oct 08 00:00:00 EDT 1991

OSTI ID:5577401

Shekleton, J R

This paper describes a combustion heated air turbine starter system. It comprises: an air turbine starter operatively associated with a main turbine engine; an auxiliary power unit adapted to deliver air through a bleed duct to the air turbine starter; and means for combusting fuel from a source with air from the auxiliary power unit; the combusting means including an auxiliary combustor disposed within the bleed duct upstream of the air turbine starter, the auxiliary combustor including an outer wall positioned in radially inwardly spaced relation to the bleed duct, the outer wall defining an axial combustion air flow path inwardly thereof and an axial bypass air flow path outwardly thereof; the auxiliary combustor including a fuel injector positioned centrally of the outer wall at an open upstream end thereof, the auxiliary combustor also including means for producing a rotating annulus of air about the fuel injector at the open upstream end of the outer wall; the rotating annulus of air causing a laminerized blue flame to be produced in radially inwardly spaced relation to the outer wall and the rotating annulus of air mixing with air in the axial bypass air flow path downstream of the outer wall to produce a flame zone radially inwardly of the bleed duct.

• Assignee: Sundstrand Corp., Rockford, IL (United States)
• Patent Number(s): US 5054284; A
• Application Number: PPN: US 7-582017
• OSTI ID: 5577401
• Resource Relation: Patent File Date: 13 Sep 1990
• Country of Publication: United States
• Language: English

Related Subjects

33 ADVANCED PROPULSION SYSTEMS
FUEL INJECTION SYSTEMS
AIR FLOW
GAS TURBINE ENGINES
ACTUATORS
COMBUSTORS
CONTROL SYSTEMS
FUEL-AIR RATIO
ENGINES
FLUID FLOW
FUEL SYSTEMS
GAS FLOW
HEAT ENGINES
INTERNAL COMBUSTION ENGINES
330603* - Vehicle Design Factors- Engine System
330103 - Internal Combustion Engines- Turbine