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Using Weibull Analysis to Predict Gearbox Reliability from Manufacturing VariationGearbox reliability is often presented as a property of the design, yet production variation can shift the real outcome well away from the nominal model. A…
Gear Tooth Convexity And Scuffing In High-Speed Aerospace GearsHigh-speed geared aircraft engines place unusual demands on the tooth flanks. A gearbox must transmit substantial torque through a compact, lightweight…
Oil Sump Baffle Geometry for Maneuvering Without StarvationIn a geared aircraft engine, a reliable oil supply depends on more than the pump, filter and reservoir. During a turn, climb, descent or rapid attitude change,…
How Gear Line Orientation Shapes Housing Loads In Offset GearboxesIn a geared aircraft engine, the direction of the gear mesh force is a structural design variable, not merely a drawing detail. Changing the gear line of…
Using DOE to Improve Gearbox Housing Joint ReliabilityIn a geared aircraft engine, a housing joint can look straightforward while carrying a demanding combination of loads. Bolts must maintain clamp force through…
How Planet Gear Web Pockets Reduce Stress and Rotating MassPlanet gears are compact, highly loaded components in geared aircraft engines. They transmit torque between the sun gear, ring gear and carrier while rotating…
A Regression Model Linking Seal Leakage to Gearbox Oil ConsumptionAirlines operating across Australia's vast distances have always demanded drivetrains that survive punishing duty cycles. From the rotorcraft that shuttle…
Finding the sweet spot for spline tooth countGeared turbofan engines run hot, run fast, and ask every component to earn its keep. The shaft connections inside these drivetrains carry enormous torque while…
Carburized gear case-core debonding and hardness profile effectsWhen a turboprop or turbofan engine reduces fuel burn by a single percentage point, the ripple through route economics, emissions reporting, and payload…
Oil Jet Breakup Length and Cooling Effectiveness in High-Speed SpraysModern geared aircraft engines operate with rotational speeds that push lubrication systems to their physical limits. Inside a power reduction gearbox, gear…