Carbon scurf removing techniques for fuel system tubes of gas-turbine engines

Аuthors

Kharin A. A.^1*, Yanovskiy L. S.^2**, Shevchenko I. V.³

1. Moscow Aviation Institute (National Research University), 4, Volokolamskoe shosse, Moscow, А-80, GSP-3, 125993, Russia
2. Central Institute of Aviation Motors, CIAM, 2, Aviamotornaya St., Moscow, 111116, Russia
3. Russian State Technological University named after K.E. Tsiolkovsky, MATI, 3, Orshanskaya str., Moscow, 121552, Russia

*e-mail: xarin.aleksandr@bk.ru
**e-mail: yanovsky@ciam.ru

Abstract

There is a necessity to remove carbon scurf arising during gas-turbine maintenance from fuel manifolds as well as fuel-air and fuel-oil heat exchanger tubes. Physical-chemical and chemical-thermal techniques are investigated to solve the carbon scurf removal problem. An approach is offered based on ozone application. This approach consists in ozone adding to coke unsaturated fragments to generate ozonide. Then ozonide is dissolved by an appropriate dissolvent and aqueous solution of non-organic matters. The technique was tested for injector cavities of gas-turbine engine fuel manifold. Test results demonstrate high efficiency of approach offered.