System for infrared emission suppression (SIRES)

Patent · Tue Oct 26 04:00:00 EDT 1982

OSTI ID:6730924

Bayly, D L; Coffey, C G; Murray, S B

Film cooling apparatus adapted to be connected into a conduit carrying a hot exhaust gas is disclosed. The apparatus comprises single walled contoured duct means connectible to said conduit and a centerbody aerodynamically shaped and supported within said duct means so as to form therewith an annular channel of zero pressure gradient. Slot means are provided in the single walled contoured duct means and in the center-body to enable a flow of cooling air over exterior surfaces thereof to maintain said surfaces at an acceptably low temperature. A network of ducting carries the cooling air to the contoured duct means and interior of the center-body. The duct means and center-body are preferably of circular cross-section taken orthogonally of the overall flow direction. The center-body is an axisymmetric bulb having annular slots for directing the cooling air over the exterior of said bulb. The center-body connects with a plenum chamber formed by said single walled duct means and an exterior section of the network of ducting. The plenum chamber is also connected to a source of cooling air. An entraining diffuser is connected to said contoured duct means downstream of the center-body. Slots in the center-body, duct means and entraining diffuser are preferably from about 0.25'' to about 0.750'' in width.

• Assignee: Canada National Defence Minister Of (Canada)
• Patent Number(s): US 4355507
• OSTI ID: 6730924
• Country of Publication: United States
• Language: English

Related Subjects

20 FOSSIL-FUELED POWER PLANTS
200101 -- Fossil-Fueled Power Plants-- Cooling & Heat Transfer Equipment & Systems
33 ADVANCED PROPULSION SYSTEMS
330100 -- Internal Combustion Engines
42 ENGINEERING
420200* -- Engineering-- Facilities
Equipment
& Techniques
AIR
COOLANTS
COOLING
DESIGN
DIFFUSERS
DUCTS
ELECTROMAGNETIC RADIATION
EMISSION
ENGINES
ENTRAINMENT
EXHAUST GASES
FILM COOLING
FLUID FLOW
FLUIDS
GAS FLOW
GASEOUS WASTES
GASES
HEAT ENGINES
HEAT EXCHANGERS
INFRARED RADIATION
INHIBITION
INTERNAL COMBUSTION ENGINES
LINERS
POWER PLANTS
PRESSURE GRADIENTS
RADIATIONS
WALLS
WASTES