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- An injector has been developed to provide high-speed high-frequency (order 10 kHz) pulsed a supersonic crossflow. The injector nozzle is formed between the fixed internal surface of the nozzle and a freely rotating three- or four-sided wheel embedded within the device. Flow-induced rotation of the wheel causes the nozzle throat to open and close at a frequency proportional to the speed of sound of the injected gas. Measurements of frequency and mass flow rate as a function of supply pressure are discussed for various injector designs. Preliminary results are presented for wall-normal injection of helium into a Mach-2 ducted airflow. The data include schlieren images in the injectant plume in a plane normal to the flow, downstream of injection.
- Other Subject(s):
- NASA Technical Reports Server (NTRS) Collection.
- Document ID: 20010010365.
AIAA Paper 2001-0517.
Aerospace Sciences; 8-11 Jan. 2001; Reno, NV; United States.
- Copyright, Distribution as joint owner in the copyright.
View MARC record | catkey: 15640133