Exhaust nozzle for jet engines
OwnerAllen E. Shortinventor
Life of this patent
Estimating the term…
Abstract
A nozzle for mounting to a jet engine at the exhaust end of the existing exhaust nozzle. The nozzle comprises a jet having an inlet for the exhaust gas jet which is exhausted from the exhaust exit of the engine. The jet inlet has means to divide the exhaust jet into two or more separate exhaust jet streams. The external surface of the body has means which create an airflow to combine with the separate jet streams which issue from the outlet end of the body.
Claims9
An exhaust nozzle for a jet engine having an exposed external peripheral surface and comprising an outlet section to discharge exhaust gas to the atmosphere;
- an inlet section of substantially circular cross section to receive the exhaust gas from the jet engine;
- partitioning in the nozzle which divides the inlet section into a plurality of sectors and forms a plurality of exhaust ducts having a sectorial cross section and flat inwardly projecting side walls, which ducts extend rearwardly from a contiguous position proximate the inlet section such that adjacent ducts have a contiguous common radial wall, to a position at the outlet section such that the ducts diverge outwardly with respect to one another and to the central longitudinal axis of the nozzle;
- a free air channel formed in the outer surface of the nozzle between each adjacent pair of exhaust ducts, each channel having inwardly projecting side walls formed in part by the opposing flat side walls of an adjacent pair of exhaust ducts, each channel extending to the nozzle outlet and being open ended thereat, and each channel beginning as a shallow groove at a point proximate the inlet section and gradually increasing in width and depth in the direction of the outlet section so as to form a plurality of paths of air flowing over the outer surface of the nozzle.
In a jet engine having an exhaust nozzle for discharging exhaust gas from the jet engine to the atmosphere, the improvement wherein the exhaust nozzle has an exposed external peripheral surface and comprises an outlet section to discharge exhaust gas to the atmosphere;
- an inlet section of substantially circular cross section to receive the exhaust gas from the jet engine;
- partitioning in the nozzle which divides the inlet section into a plurality of sectors and form a plurality of exhaust ducts having a sectorial cross section and flat inwardly projecting side walls, which ducts extend rearwardly from a contiguous position proximate the inlet section such that adjacent ducts have a contiguous common radial wall, to a position at the outlet section such that the ducts diverge outwardly with respect to one another and to the central longitudinal axis of the nozzle;
- a free air channel formed in the outer surface of the nozzle between each adjacent pair of exhaust ducts, each channel having inwardly projecting side walls formed in part by the opposing flat side walls of an adjacent pair of exhaust ducts, each channel extending to the nozzle outlet and being open ended thereat, and each channel beginning as a shallow groove at a point proximate the inlet section and gradually increasing in width and depth in the direction of the outlet section so as to form a plurality of paths of air flowing over the outer surface of the nozzle.
Dependencies are inferred from the claim text.