Power is injected into the high-pressure shaft, then withdrawn to cut fan acceleration lag and reach target thrust faster.
When one startup battery fails, grid power and higher discharge from healthy batteries keep the rotary machine operating.
By comparing recent and delayed speed samples while discarding older data, the controller detects hung turbine starts with lower compute and storage load.
A load dissipative device and feedback control smooth motor-generator switching to prevent shaft-speed oscillations and pressure instability.
Cryptographically signed blockchain transactions enable secure wireless engine shutdown when wired links can fail or be physically severed.
Compares recent and delayed gas-generator speed samples to detect hung starts while cutting storage and computing load.
A pressure-driven piston and baffle bleed valve vents the compressor without solenoids, cutting gas turbine control complexity and mass.
Hierarchical distributed ledgers authenticate aerospace control nodes and peripheral configurations before operation to block unauthorized access.
A pressure-driven piston bleed valve replaces active solenoids to cut valve mass and complexity in gas turbine compressor flow control.
A physics-based model adapts gas turbine startup to ambient and operating conditions, cutting startup time, auxiliary power use, and NOx.
A pressure-actuated lockout valve keeps primary fuel flow to the gas turbine during start-up, then opens secondary flow as pump capacity rises.
Differential pressure drives a piston while an adjustable baffle tunes the bleed valve opening threshold without solenoids or pneumatic control.
Digital certificates and hybrid key exchange authenticate engine components and block forged devices in gas turbine communication.
A self-actuated inline bleed valve uses a control piston and spring to cut pressure loss, resist vibration, and recalibrate closure pressure.
Dual electrical machines and a transmission let an aircraft cabin blower vary compressor speed without heavy mechanical drive constraints.