Showing papers on "Afterburner published in 1998"
01 Jul 1998
TL;DR: A full envelope database of a thrust-vectoring axisymmetric nozzle performance for the P/YBBN is developed using the F-15 Advanced Control Technology for Integrated Vehicles (ACTIVE) aircraft as discussed by the authors.
Abstract: A full envelope database of a thrust-vectoring axisymmetric nozzle performance for the Pratt & Whitney Pitch/Yaw Balance Beam Nozzle (P/YBBN) is being developed using the F-15 Advanced Control Technology for Integrated Vehicles (ACTIVE) aircraft. At this time, flight research has been completed for steady-state pitch vector angles up to 20' at an altitude of 30,000 ft from low power settings to maximum afterburner power. The nozzle performance database includes vector forces, internal nozzle pressures, and temperatures all of which can be used for regression analysis modeling. The database was used to substantiate a set of nozzle performance data from wind tunnel testing and computational fluid dynamic analyses. Findings from initial flight research at Mach 0.9 and 1.2 are presented in this paper. The results show that vector efficiency is strongly influenced by power setting. A significant discrepancy in nozzle performance has been discovered between predicted and measured results during vectoring.
19 citations
TL;DR: A series of pilot-scale plasma incineration tests of simulated mixed wastes at the MSE Technology Applications, Inc. technology development test facility in Butte, MT were conducted by the United States Department of Energy (DOE) as mentioned in this paper.
4 citations
Patent•
20 Aug 1998
TL;DR: In this article, the mixer of afterburner of a turbo-jet engine has corrugations forming alternating channels of internal and external ducts, and angle of inclination of each subsequent edge of corrugation differs from previous one by 4 to 90 degrees.
Abstract: FIELD: aircraft engines SUBSTANCE: mixer of afterburner of bypass turbo-jet engine has corrugations forming alternating channels of internal and external ducts Trailing edges of corrugations are inclined to longitudinal axis of mixer at different angles; angle of inclination of each subsequent edge of corrugation differs from previous one by 4 to 90 deg EFFECT: enhanced stability to vibratory combustion 3 dwge
1 citations