CycloTech reveals noise level of CycloRotor
Austrian CycloTech claims to have conducted the most extensive CycloRotor outdoor noise test campaign ever conducted in the aeronautical industry. Offering a 360 degree thrust vectoring capability coupled with compact design, the data gathered will be used to investigate the influence of different parameters on the acoustic characteristics of CyloRotors and guide the design of CycloRotor-driven AirCar concepts.
In order to leverage the noise reduction potential of electrically powered air vehicles and minimise noise exposure in populated areas, the noise test was conducted at Wels General Aviation Airport in Austria.
The CycloRotor CR-42 was mounted vertically on a mobile frame and placed far away from any reflective surface. Measurements were performed when there was no air traffic and wind speed was below 2.5 m/s, with eight microphones arranged in five distinct configurations to characterise the noise generation and propagation of the CycloRotor.
A key result of the test is that the CycloRotor generates a sound pressure level of 59 dBA at a distance of 100 metres, which is equivalent to the level of a typical conversation between two people.
“This is a promising result and CycloTech will continue to investigate and optimise the aeroacoustic signature of the CycloRotor,” said Pedro Carrasco Laraña, aeroacoustics engineer at CycloTech.
CycloTech’s propulsion systems are based on the VoithSchneider-Principle. The compact design and instant control of magnitude and orientation of the omni-directional thrust of CycloRotors enable easy transition from hover to forward flight, gust control and precision landing, ideal for safe operation in crowded airspace and confined areas.
Following EASA regulations in March, CycloTech received permission from Austria’s Austro Control national aviation safety authority to perform outdoor flights with its 85kg demonstrator starting March 2023.
