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Strain gauge testing for validating FEA on aircraft gearbox housingsModern geared turbofan engines push their reduction gearboxes past 10,000 rpm while carrying torque loads that would have been unthinkable a generation ago. At…
Gear Load Sharing and Bearing Life in Starved LubricationA geared aircraft engine depends on a compact transmission system operating under severe mechanical and thermal conditions. The gearbox must transfer high…
Optimising Oil Filter Mesh Size for Efficient Aircraft GearboxesOil filtration is a small component decision with a large influence on a geared aircraft engine. The selected mesh or filter rating affects contamination…
How Planet Tooth Count Primes Shape Gear Mesh HarmonicsIn a planetary gearbox, tooth counts do more than determine speed ratio, centre distance and load capacity. Their arithmetic relationships also control how…
Using DOE to Balance Gear Hardness and Case Depth in Mixed FatigueA geared aircraft engine gearbox must survive several forms of fatigue at once. The tooth flank sees repeated rolling and sliding contact, while the tooth root…
Housing Wall Damping For Quieter Aircraft GearboxesIn a geared aircraft engine, the gearbox housing is more than a container for shafts, bearings and lubrication. It is part of the acoustic system. Gear-mesh…
Modelling Gear Tooth Roughness And EHL Power LossA regression model linking gear tooth roughness to power loss in the elastohydrodynamic regime can give gearbox designers a practical way to connect surface…
Optimizing Gear Shaving Parameters For Accurate Gearbox TeethGear shaving is a precision finishing operation used to refine the tooth flanks of gears before heat treatment or as part of a broader manufacturing route.…
How Bearing Layout Shapes Gearbox Critical SpeedsIn a geared aircraft engine, bearings do far more than support rotating shafts. Their number, stiffness, spacing and preload determine how the gearbox bends,…
Designing an Integrated Oil Cooler in the Gearbox Housing for Weight ReductionA geared aircraft engine depends on its gearbox to transmit substantial power while operating at high rotational speeds and under demanding thermal conditions.…