| Msg ID: 2701003 |
Tail rotor design +0/-0
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| Author:jackoldy
8/26/2021 6:44:40 PM |
In tail rotor design, anyone know what is done for noise, besides lower tip speed as indicated in this article on tail rotor design? |
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| Msg ID: 2701004 |
Tail rotor design +1/-0
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| Author:In a fenestron
8/26/2021 6:52:29 PM Reply to: 2701003 |
the blades are staggered instead of evenly spaced. |
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| Msg ID: 2701007 |
Tail rotor design +2/-0
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| Author:Similarly
8/26/2021 7:12:19 PM Reply to: 2701004 |
The 4 bladed MD 500 tail rotor spun slower and had 2 oem blades offset by about 70degrees instead of 90 |
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| Msg ID: 2701019 |
Tail rotor design +0/-0
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| Author:Romantic Ron
8/26/2021 9:52:05 PM Reply to: 2701007 |
Bell has a design available similar to the MD's |
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| Msg ID: 2701021 |
Tail rotor design +0/-0
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| Author:Romantic Ron
8/26/2021 9:54:29 PM Reply to: 2701019 |
Oh and the MD 520, 600, 902 have that fan in a stovepipe NOTAR |
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| Msg ID: 2701036 |
Tail rotor design +1/-0
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| Author:lower noise
8/27/2021 12:47:33 AM Reply to: 2701007 |
but not as much authority as a good old 2 bladed system. Always a compromise. |
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| Msg ID: 2701087 |
Tail rotor design +2/-0
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| Author:Also
8/27/2021 11:03:04 AM Reply to: 2701004 |
On certain Airbus models, the RPM changes through different phases of flight (both main and tail rotor). There is a diagram in the RFM that shows the decreased RPM in cruise flight reduces noise levels. When in a hover and a lot of pedal is added, the RPM automatically bumps up, increasing the noise. |
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| Msg ID: 2701179 |
Tail rotor design +0/-0
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| Author:PFDR
8/27/2021 11:48:06 PM Reply to: 2701087 |
Yeah on the Ec130 right? The more power you pull the more tail rotor effectiveness youll get if I recall correctly. |
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| Msg ID: 2701181 |
Tail rotor design +0/-0
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| Author:PFDR
8/27/2021 11:56:34 PM Reply to: 2701179 |
I can't seem to find the document Eurocopter put out on the subject, if anyone knows that I'm talking about please let me know where to find it. Tail rotor RPM |
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| Msg ID: 2701038 |
ear plugs (NT) +0/-0
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| Author:have always worked
8/27/2021 1:01:40 AM Reply to: 2701003 |
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| Msg ID: 2701446 |
Tail rotor design +0/-0
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| Author:Spacing
8/30/2021 1:32:38 PM Reply to: 2701003 |
of blades to reduce harmonics. |
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