Scientists from Samara University named after Academician S.P. Korolyov have patented a utility model — a fuel supply system for a small-sized gas turbine engine with an annular combustion chamber. The development allows increasing the altitude for starting such engines, which run on kerosene.
The system includes a fuel pump, a power source, a heating element, pipelines, fuel manifolds, and nozzles. A separate heated circuit feeds the starting nozzle at all modes — from start-up to nominal operation. The main nozzles (11 pieces) receive fuel separately at nominal and low-throttle modes.
The technical result is the heating of fuel in the starting nozzle, which contributes to increasing the engine's starting altitude.
Such a solution is especially useful for unmanned aerial vehicles, auxiliary power units, and other gas turbine engines that must reliably start at high altitudes and low temperatures. It allows expanding the operational capabilities of aviation equipment, increasing its reliability and flight safety in difficult conditions.