Compressed-air needle valve for controlling an air flow for driving engine simulators in aircraft models for wind tunnel experiments

Abstract

The invention relates to a compressed-air needle valve for controlling an air flow for driving engine simulators in aircraft models for wind tunnel experiments, the needle valve including: a housing having a front face and a rear face; a control rod which is held in the rear face of the housing such that it can move longitudinally; an air inlet, which is arranged in a side face of the housing; an air outlet which is arranged in the area of a front face of the housing; a Venturi insert upstream of the air outlet; and a needle which is arranged at a first end of the control rod and by means of which an annular gap between the needle and the Venturi insert can be continuously varied by longitudinal movement of the control rod in order to control the air flow.

Dependencies are inferred from the claim text.