Light Twin Comparison
I think noise is a issue everywhere in the world now(unless you live in the dessert).
we care quite a lot about it too - another area where the 902 is significantly ahead of the rest. When our 135 pops over where I live while I'm off-shift, you certainly know all about it. I used to have no problems sleeping-off my night shift when the 902 came to visit - never used to hear her. As I mentioned on another thread, though, the worst of the bunch has to be the BK117; both counties know when she's up and around down in D&C.
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I do like the 902, but MDs future is up in the air right now as I understand it.I'm surprized to hear that the 135 makes more noise than the 902
I would deffinately like something like the 130 with 2 engines.It's got good viz, is quite and comfortable.
I would deffinately like something like the 130 with 2 engines.It's got good viz, is quite and comfortable.
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TC: You really do take a simplistic view on matters at times.
Firstly the A109E more than meets and exceeds the ICAO limits and second of all the new aircraft will be significantly quieter again due to the introduction of new trb's.
If noise was an issue for VIP operations of the 109 then it is hard to explain how it outsells the corporate variants of the other competing aircraft by about 8 to 1??
One would assume from your logic also that the 145 would fall in the same category as the 109 and be ruled out in any area where noise is a concern (e.g. MET!!!)?
Firstly the A109E more than meets and exceeds the ICAO limits and second of all the new aircraft will be significantly quieter again due to the introduction of new trb's.
If noise was an issue for VIP operations of the 109 then it is hard to explain how it outsells the corporate variants of the other competing aircraft by about 8 to 1??
One would assume from your logic also that the 145 would fall in the same category as the 109 and be ruled out in any area where noise is a concern (e.g. MET!!!)?
DC,
I'm not sure whether the actual volume of the noise is the issue, so much as the nature of the noise. Eurocopter make a big thing in their blurb about the measured PNdB being lower than the competition; however, I suspect the thing that makes people hear the 135 before the 902 is the "harsher" (subjectively assessed) note. We even had calls on my last unit when the 135 from an adjacent unit was overflying our area. Because to Joe Public one blue-and-yellow helicopter looks like another, some folk were concerned that there might have been something wrong with our a/c as it went past.
I'm not sure whether the actual volume of the noise is the issue, so much as the nature of the noise. Eurocopter make a big thing in their blurb about the measured PNdB being lower than the competition; however, I suspect the thing that makes people hear the 135 before the 902 is the "harsher" (subjectively assessed) note. We even had calls on my last unit when the 135 from an adjacent unit was overflying our area. Because to Joe Public one blue-and-yellow helicopter looks like another, some folk were concerned that there might have been something wrong with our a/c as it went past.
Eurobollockow: touchy are we sweetie?
When one purchases ones own VIP helo, I seriously doubt whether one cares what it sounds like from the outside. The lumpen proletariat can stick it
The 109 is probably successful in this (corporate) area because it serves as a perfect VIP carriage:
Quick / Sleek / Italian
Thats about all its good for (
) ooops sorry it slipped out!
I agree with others re noise - on paper the EC135 is quieter than the 900. In reality....Mmmmmm??? It all depends on where the observer is at the time, I would suggest.
Discount noise as a factor for or against buying a 'best value' helo. Concentrate on operating costs and reliability.
When one purchases ones own VIP helo, I seriously doubt whether one cares what it sounds like from the outside. The lumpen proletariat can stick it
The 109 is probably successful in this (corporate) area because it serves as a perfect VIP carriage:Quick / Sleek / Italian
Thats about all its good for (
) ooops sorry it slipped out!I agree with others re noise - on paper the EC135 is quieter than the 900. In reality....Mmmmmm??? It all depends on where the observer is at the time, I would suggest.
Discount noise as a factor for or against buying a 'best value' helo. Concentrate on operating costs and reliability.
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TC:
Perhaps you need to read the start of this thread again. My first response was that the A109E is the corporate machine of choice in the market place with the 135 a useful utility aircraft (but one in which corporate clients feel sick apparently!!)
Noise is in some cases more of an issue for private operators who have to keep the peace with neighbours but I agree that it is rarely the be all and end all.
As for the 109E being quick, slick and italian, well it is all those things, however it is also very reliable, well supported, has low DOC and with new developments will be able to fly further, faster and with more payload than any of the competition.
Perhaps you need to read the start of this thread again. My first response was that the A109E is the corporate machine of choice in the market place with the 135 a useful utility aircraft (but one in which corporate clients feel sick apparently!!)
Noise is in some cases more of an issue for private operators who have to keep the peace with neighbours but I agree that it is rarely the be all and end all.
As for the 109E being quick, slick and italian, well it is all those things, however it is also very reliable, well supported, has low DOC and with new developments will be able to fly further, faster and with more payload than any of the competition.
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Living under the flight path of a local 135 and visiting 902s, I cab verify that the 902 is much,much quieter than the 135 and it doesn't matter where you are stood in relation to the aircraft.
You don't hear the 902 until it's overhead.
Also it's currently cheaper.Hopefully production and spares problems will soon be a thing of the past if what is in the pipeline for MDHI comes to pass.
You don't hear the 902 until it's overhead.
Also it's currently cheaper.Hopefully production and spares problems will soon be a thing of the past if what is in the pipeline for MDHI comes to pass.
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I would have to agree with quichemech, the 902 really is a quiet machine.
From what I understand though it is about to become an orphan left out in the cold and that can only mean that production and spares problems will get worse and not better.
From what I understand though it is about to become an orphan left out in the cold and that can only mean that production and spares problems will get worse and not better.
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I can barely believe this - I've seen the Essex Police 135 sighing overhead and could not believe what I wasn't hearing. I only spotted my first EC120 by pure chance. That MD902 must be some machine!
Purveyor of Egg Liqueur to Lucifer
"That MD902 must be some machine!"
It most certainly is Hilico, it most certainly is.
Have a closer look here.
It most certainly is Hilico, it most certainly is.
Have a closer look here.
FAR 36 appendix J states that the EC135 is 2Db quieter than the 902.
Silsoe: Fantastic and very professional web site, especially the Adobe 360 pics!!! Must pinch that idea for our site!
Shame about your 902 claims though
Silsoe: Fantastic and very professional web site, especially the Adobe 360 pics!!! Must pinch that idea for our site!
Shame about your 902 claims though
Tightgit
TC, there is no doubt that to the'casual observer' (ie one listening with his ears and not measuring it with a machine), the MD 902 is quieter than the 135.
.....................and a cuff round the ear to the first one who says that this is because the 902 is probably U/S!
.....................and a cuff round the ear to the first one who says that this is because the 902 is probably U/S!
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Handy,
She might be a little more servicable if she didn't spend 355 days a year outside come rain, shine and howling gale
As for being a lost Orphan, pish put about by the competition!
The Essex police machine was probably wheezing by, more than sighing with all the clobber it carries, didn't they send it back because it couldn't keep up with the ambulance?
She might be a little more servicable if she didn't spend 355 days a year outside come rain, shine and howling gale
As for being a lost Orphan, pish put about by the competition!
The Essex police machine was probably wheezing by, more than sighing with all the clobber it carries, didn't they send it back because it couldn't keep up with the ambulance?
