Comparative Noise Levels
Greetings to the rotorheads of this world.
I need to do a presentation to local government about the feasability of establishing a helistop within a municipal area. Does anybody have the data on noiselevels from different helo's in their different classes. Example AS350,EC130,A119&B407 as a similar category/class. If possible relating to ICAO and GCNP threshholds in overflight, landing & T/O. Your info/help eagerly awaited! |
I seem to remember either Vertiflite or The Journal of the American Helicopter Society carrying a comprehensive feature on comparative helicopter noise levels about 3 or 4 years ago. You might want to try contacting the American Helicopter Society's publications team - I'm sure they'll know which back issue you need.
I/C |
Noticed this on the MD Helicopters website, it may be of some use.
http://www.mdhelicopters.com/Rotorcr...004%202004.png FNW |
Heliport Noise Model
|
SANAE,,,
Private message me..we got our inner city heliport aprroved in Newcastle , Australia for all types and i have a document thick of noise testing for our pad from an r22 right upto and chinook / blackhawk/ sky crane....with all noise signatures data etc...i may have to fax it to you but you will get an idea anyway!! we regularly opperate...R44..B206..B407..AS355/350..A109../S76 ETC from our pad which is in the CBD no problems at all.. ihave all the figures...let me know and i would be pleased to help you |
hughes 500 noise levels
I'm looking for any charts or information,that show the comparison between take off,in flight and approach?
mainly the good ol Hughes 500's:ok: and the AS350.:eek: Any help would be greatly appreciated.:D This is for a heliport proposal not against anyone!! |
MD500
Flyover = 87.7 EPNdB Take-off = 88.6 EPNdB Approach = 89.6 EPNdB AS350B2 Flyover = 87.6 EPNdB Take-off = 89.8 EPNdB Approach = 91.4 EPNdB AS350B3 Flyover = 87.3 EPNdB Take-off = 89.7 EPNdB Approach = 91.3 EPNdB |
I have a 16 page pdf document on my computer, got it on the net some time ago (don't know from where). It is titled 'Noise Levels according to ICAO Annex 16 Vil 1 Chapter 8, Dated 15/06/2006'. It gives the noise level for a full range of aircraft.
If you would like me to e-mail it send me a PM. |
Here is a link to the document, kindly hosted by John Eacott:
http://www.eacott.com.au/gallery/d/2...elicopters.pdf |
EC155b1 noisier than a Huey on approach , surely not , can anyone translate the german test next to it .
|
Noise measurements = Border measurements until proof has been given.
That is what it says as for what it means over to someone else. |
Latest noise databases
Thanks for the information above which is very useful. As an update, EASA have got a link through to their very big Excel databases of noise for helicopters, and jet and propeller aircraft:
EASA noise The key value is the "level" for takeoff, overflight and approach and not the "limit", which is an ICAO calculated limit for a particular Stage compliance. The "limit" and the "margin" (= limit - level) are metrics used to see how close the particular machine is to the limit. |
All times are GMT. The time now is 03:11. |
Copyright © 2024 MH Sub I, LLC dba Internet Brands. All rights reserved. Use of this site indicates your consent to the Terms of Use.