GAS TURBINE ENGINE CARTER, GAS TURBINE ENGINE, CARTER COVER AND METHOD OF ENDOSCOPY AND/OR DEFECTOSCOPY Russian patent published in 2018 - IPC F01D21/00 B64D29/08 

FIELD: aircraft equipment.

SUBSTANCE: crankcase of the gas turbine engine contains an endoscopic opening and a device mounted and fixed on the crankcase, means for fixing the device on the crankcase, as well as a plug and a cover. Device, installed and fixed on the crankcase, contains a channel that communicates with the endoscopic opening. Plug serves for screwing into the endoscopic opening of the crankcase and contains an internal thread, and the cover is installed on the fixture and closes the fastening means. Cover is designed to leave the channel free to access when the plug is not screwed into the channel, the plug containing means of supporting the cover to keep it pressed to the device. Another group invention relates to a gas turbine engine comprising the above crankcase. Another invention of the group relates to the cover of the above crankcase, containing the first hole, made with the plug passing through it, and the second hole, made with the possibility of passage through it of a screw or threaded rod, but not the head of this screw and not the nut intended for screwing on the screw or threaded rod. During endoscopy and/or defectoscopy, unscrew the plug through the endoscopic opening of the crankcase and remove it from the device attached to the crankcase. Endoscopy and/or defectoscopy flaw detection system is introduced into the channel of the device and into the crankcase opening, the cover remains installed on the device.

EFFECT: group of inventions makes it possible to exclude the possibility of the operator mistakenly unscrewing the means of fixing the device instead of the plug closing endoscopic opening.

14 cl, 10 dwg