News

Noise Abatement Takeoff Procedure Design Assessment for Frankfurt Airport

May 2019 | Environment

On behalf of the non-profit Umwelthaus GmbH, GfL determines so-called fixed point profiles for innovative departure procedures with noise reduction potential, taking into account actual operational parameters such as aircraft type, weight and thrust used. These profiles should make it possible for the first time to quantify the effects of such take-off procedures in the context of the Aircraft Noise Act and the calculation procedure defined therein (AzD/AzB). This requires flight performance calculations, which GfL has been carrying out on a daily basis for DFS - Deutsche Flugsicherung since 2016 with the help of the ETAS calculation software (see news in March 2019). However, the framework conditions are set according to CNOSSOS-EU. The so-called Common Noise Assessment Methods represent a uniform method for the assessment of environmental noise for road, rail and air transport as well as for industry throughout Europe and are standardised by Directive (EU) 2015/996. The part relevant to air traffic has been included in ECAC Doc. 29 With Appendix B to Doc. 29 specifies calculation rules for flight performance and sound propagation. Characteristic values of the calculation are taken from the Aircraft Noise and Performance Database of EUROCONTROL. The numerous profiles for various aircraft types are to be available by August 2019 in order to enable their further processing in certified noise calculation programs for quantifying any potential. Partners in the project include Deutsche Lufthansa, Condor Flugdienst GmbH and DFS. 

Noise abatement take-off-climb (NADP1) - (© ICAO)
Noise abatement take-off-climb (NADP1) - (© ICAO)
Noise abatement take-off-climb (NADP2) - (© ICAO)
Noise abatement take-off-climb (NADP2) - (© ICAO)