Patent · US Expired

Process and apparatus for noise reduction in multi-engine propeller-driven aircraft

US6896219B2 · kind B2 · utility

8Cited by

4References

35Claims

0Family size

Assignee

Dornier GmbH · DE

Inventors

Ingo Borchers · Überlingen, DE
Sigurd Haeusler · Überlingen, DE
Michael Bauer · Gernlinden, DE
Roger Drobietz · Salem, DE
Wolfgang Gleine · Kakenstorf, DE

Key dates

Filing date	Mar 19, 2003
Grant date	May 24, 2005
Priority date	—
Expiry date	Mar 19, 2023

Classification

Technology area (CPC G)Physics
CPC primaryG10K11/175
WIPO fieldOther consumer goods
WIPO sectorOther fields

Abstract

A process and system for noise reduction in multi-engine propeller-driven aircraft. The parameters of at least two propellers are adjusted with regard to frequency, amplitude, and phase so that the sound fields of the propellers are attenuated or completely extinguished by interference in the area of the closest aircraft fuselage.

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