Advanced characterization of friction and surface damage for gears running in loss of lubrication conditions

Topic description

Specific Challenge:

The optimization of the lube system and sump layout in next generation geared turbofans is key to reduce weight and complexity, while ensuring reliability. This topic aims at maturing up to TRL3 configurations in which the auxiliary or secondary oil system is not necessary to survive off-design requirements. It is requested to investigate the major drivers of frictional heating and surface damage on gears running in off-design conditions, to identify solutions providing abatement to the risk of damage on gear surfaces and to demonstrate such technologies and solutions on component test, such as power circulating rigs, running in representative aeroengine conditions. Please refer to the full topic descriptions document published in this call.