Analysis of a great number of works allows concluding that many types of GTE and GTU nozzles can be divided into 3 main groups and 3 intermediate (composite) groups. The developed general classification of atomizers with descriptions of their operating principles, advantages and disadvantages is used to select a type of device for development. The most promising type chosen from descriptions given in the paper is the one with atomization of fuel by high-speed air flow.
The design of the combined nozzle module with bubbling and pneumatic spraying for the low-emission combustion GTE chamber has been carried out. Based on pervious work and literature analyzie a prototype of new combined nozzle module with five places of bubbling air supplying were pre-designed. To pre-select the position of the emulsification holes and to determine the possibility of combining the emulsion and pneumatic spraying principles in one design a series of experiments was carried out. The first results obtained using even not optimized device, showed that in modes close to the ground start and idle, the quality of the fuel spraying was improved by 30 % using the method of low-flow fuel bubbling.
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