Turbochargers to small turbojet engines for uninhabited aerial vehicles
Rivera, Gilbert D.
Netzer, David W.
Hobson, Garth V.
Netzer, David W.
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Three test programs were conducted to provide thepreliminary groundwork for thedesign of a small turbojet engine from turbocharger rotorcomponents for possible Uninhabited Aerial Vehicle applications. The first program involved the performance mapping of the Garrett T2 turbocharger centrifugal compressor. The second program involved the bench testing of a small turbojet engine, the Sophia J450, at 115000 RPM, and comparing the results to another small turbojet, the JPX-240, from previously documented research. The compressor radii of the two engines were identical but greater than that of the Garrett compressor. The two engines, despite their physical similarities, had different fuel requirements. The J450 used heavy fuel (fuel pump required) while the JPX used liquid propane (pressurized fuel tank required). The third program involved the performance prediction of the J450 using GASTURB cycle analysis software. The compressor map generated from the Garrett T2 test was imported into GASTURB and used to predict the J450 performance at 94000,105000,115000, and 123000 RPM. The performance predictions agreed reasonably well with actual J450 performance
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