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Variably positioned guide vanes for aerodynamic choking
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Copyright Year | 1974 |
| Description | A choking device to cause a sonic barrier to be formed which reduces the transmission of noise in a direction opposed to the direction of air flow in a compressor that may be part of an aircraft gas turbine engine is described. The noise reduction is accomplished by proper shaping and movement of inlet guide vanes, and an actuator is connected to selected guide vanes to effect movement by programmed amounts as required to choke or partially choke within the design range of the axial-flow-air compressor. |
| File Size | 445772 |
| Page Count | 9 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_19740023157 |
| Archival Resource Key | ark:/13960/t8kd6p37p |
| Language | English |
| Publisher Date | 1974-08-13 |
| Access Restriction | Open |
| Subject Keyword | Equipment Specifications Acoustic Properties Chokes Restrictions Engine Noise Noise Reduction Engine Inlets Flow Characteristics Product Development Inlet Flow Jet Engines Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Patent |