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Tuning Gearbox Housing Damping for Quieter Aero EnginesModern geared turbofan engines squeeze more thrust from every kilogram of fuel, yet that mechanical advantage comes with a price: more vibration, more…
Planet Gear Web Thickness and Its Role in Torsional PerformanceIn a planetary gear set, the planet gear is rarely a simple solid disc. The web — the thin disc-shaped body that connects the teeth to the inner bore — carries…
How Material and Safety Factor Shape Gearbox Weight in DOE StudiesA geared turbofan engine cannot afford unnecessary grams. Every additional kilogram inside the reduction gearbox translates into higher inertia loads on…
Maximising Partial Load Efficiency Through Gear Tooth Flank Profile ModificationAerospace propulsion has shifted decisively toward geared architectures, with manufacturers chasing higher bypass ratios and reduced specific fuel consumption.…
How volatility shapes oil consumption and viscosity in gearboxesGeared aircraft engines push their reduction gearboxes into a thermal regime that few industrial systems ever see. Sump temperatures can sit above 150 °C for…
An Experimental Design for Quieter Gearbox Assembly ClearancesAircraft cabins and ground test facilities across Sydney, Melbourne, and Brisbane have grown accustomed to measuring sound by the decibel. Inside a high-speed…
Oil Spray Nozzle Placement and Airflow in High-Speed GearboxesGeared aircraft engines push lubricants through environments where temperature, speed and pressure change from one tooth mesh to the next. Designers of power…
How tooth root fillet roughness drives fatigue crack initiationIn modern geared turbofan engines, the reliability of every rotating component is governed by what happens at the millimetre scale. The fillet region at the…
Predicting Gearbox Housing Modal Damping with Finite Element AnalysisGearbox housings in modern geared turbofan engines operate in an environment where small levels of vibration can translate into significant acoustic emissions,…
Bearing temperature control in stacked geared engine architecturesThe thermal envelope of a modern geared turbofan depends on a chain of small hydrodynamic decisions that, taken together, decide whether a bearing survives its…