Patent · US Active

Hybrid propulsion system of a helicopter

US12043374B2 · kind B2 · utility

0Cited by

0References

12Claims

0Family size

Assignee

Kopter Group AG · CH

Inventors

Johann Werner Hettenkofer · Ottobrunn, DE
Detlev Matthias Even · Kailua, US
Andreas Dummel · Hohenbrunn, DE

Key dates

Filing date	Jan 26, 2021
Grant date	Jul 23, 2024
Priority date	—
Expiry date	May 9, 2041

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY02T50/60
WIPO fieldTransport
WIPO sectorMechanical engineering

Abstract

A hybrid propulsion system with controllers and a drive shaft of a helicopter with a main rotor connected to a gearbox which can keep a flight attitude set by a pilot stable. It includes a pilot controller, a combustion engine and an electric motor, both of which act directly on the drive shaft. The VM is connected to a VM controller, and the EM is connected to an EM controller. One torque sensor and one tachometer are each arranged on the drive shaft, wherein during operation both the VM controller and the EM controller are able to receive values for the current speed and the current torque. Specified values for speed and torque, in which the VM can attain its optimum efficiency, are stored in memory and can be retrieved by the EM controller, wherein the first value can also be retrieved by the VM controller.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.