Влияние дросселирования топливного коллектора на вибросостояние форсажной камеры

Abstract

The study focuses on the vibration state of the afterburner of turbofan afterburner engine. The studies were conducted in the form of ground and flight tests on objects that showed the occurrence of vibrations above the established and controlled norm. The cause of increased vibrations is vibration combustion, which manifests itself when the peripheral part of the afterburner is enriched. Enrichment of the peripheral part of the afterburner presumably occurs due to: an increase in fuel consumption and decrease in air flow in the peripheral combustion zone. Since a change in the design and operating conditions of the afterburner can affect the mixture composition, as measures to improve the vibration state of the afterburner, a decision was made to reduce fuel consumption it the peripheral part of the afterburner.