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Design and study of a lox/gh2 throttleable swirl injector for rocket applications
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Pal, Sibtosh Santoro, Robert Woodward, Roger Greene, Christopher |
| Copyright Year | 2002 |
| Description | A LOX/GH2 swirl injector was designed for a 10:1 propellant throttling range. To accomplish this, a dual LOX (liquid oxygen) manifold was used feeding a single common vortex chamber of the swirl element. Hot-fire experiments were conducting for rocket chamber pressures from 80 to 800 psia at a mixture ratio of nominally 6.0 using steady flow, single-point-per-firing cases as well as dynamic throttling conditions. Low frequency (mean) and high frequency (fluctuating) pressure transducer data, flow meter measurements, and Raman spectroscopy images for mixing information were obtained. The injector design, experimental setup, low frequency pressure data, and injector performance analysis will be presented. C efficiency was very high (approximately 100%) at the middle of the throttle-able range with somewhat lower performance at the high and low ends. From the analysis of discreet steady state operating conditions, injector pressure drop was slightly higher than predicted with an inviscid analysis, but otherwise agreed well across the design throttling range. Analysis of the dynamic throttling data indicates that the injector may experience transient conditions that effect pressure drop and performance when compared to steady state results. |
| File Size | 613728 |
| Page Count | 13 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_20020045359 |
| Archival Resource Key | ark:/13960/t25b52f2v |
| Language | English |
| Publisher Date | 2002-01-01 |
| Access Restriction | Open |
| Subject Keyword | Spacecraft Propulsion And Power Pressure Sensors Throttling Vortex Injectors Liquid Oxygen Steady Flow Liquid Rocket Propellants Flowmeters Reliability Analysis Fuel Injection Liquid Propellant Rocket Engines Raman Spectroscopy Propulsion System Configurations Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Article |
