초록 ▼

An aircraft turboshaft engine intake includes an axial diffuser and a colinear plenum disposed in flow communication therewith for collecting diffuser air therefrom. A scroll is disposed radially below the plenum in flow communication therewith for accelerating the plenum air for discharge to the ai

An aircraft turboshaft engine intake includes an axial diffuser and a colinear plenum disposed in flow communication therewith for collecting diffuser air therefrom. A scroll is disposed radially below the plenum in flow communication therewith for accelerating the plenum air for discharge to the aircraft engine. In this arrangement, propeller air is diffused in the diffuser and collected in the plenum wherein it is turned radially inwardly and accelerated through the scroll into the, engine. Diffusion is uncoupled from air turning for improving the efficiency thereof.

대표청구항 ▼

[ Accordingly, what is desired to be secured by Letters Patent of the United States is the invention as defined and differentiated in the following claims:] [1.] A method of channeling air from a propeller into an inlet of an aircraft engine driving said propeller through a gearbox and drive shaft c

[ Accordingly, what is desired to be secured by Letters Patent of the United States is the invention as defined and differentiated in the following claims:] [1.] A method of channeling air from a propeller into an inlet of an aircraft engine driving said propeller through a gearbox and drive shaft comprising:diffusing said air axially from said propeller for increasing pressure thereof by decreasing velocity;colinearly collecting said air from said diffusing step, and turning said air radially inwardly along a radially arcuate closed turning flowpath to bypass said gearbox; andaccelerating said air from said collecting and turning steps and discharging said air axially into said engine inlet.