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Old 15th October 2018 | 04:58
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Marine One start up

I have noticed that when POTUS talks to reporters, or walks to the machine, the turbines often sound like they're running, but the blades are not yet turning.
Does the VH-3D have a ground idle setting which is used at this point - once he's on board then flight idle selected and blades begin to turn?
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Old 15th October 2018 | 05:10
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Sounds like there is a rotor brake like in the S58 and S76
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Old 15th October 2018 | 05:39
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Standard Sea King start is with rotor brake on, both engines running before engaging rotors.

At least it used to be
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Old 15th October 2018 | 06:21
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From: On the big blue planet
Originally Posted by John Eacott
Standard Sea King start is with rotor brake on, both engines running before engaging rotors.

At least it used to be
At least the Westland Kings have an AccessoryDrive ( actuated free wheeling unit ) so #1 could drive the hydraulics/generators without load on the rotorbrake...

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Old 15th October 2018 | 06:47
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Errrm....APU?
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Old 15th October 2018 | 07:27
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Originally Posted by Sloppy Link
Errrm....APU?
Errmm....on a Sea King?
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Old 15th October 2018 | 08:14
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Not exactly a Sea King - I believe its known as an H3 across the pond. I think it has different engines, but I would imagine the same gearbox, including the accessory drive. As a maritime helicopter, the acc drive is part of the basic design to provide hydraulic power to fold/unfold the blades onboard ship.
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Old 15th October 2018 | 08:15
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Originally Posted by skadi
At least the Westland Kings have an AccessoryDrive ( actuated free wheeling unit ) so #1 could drive the hydraulics/generators without load on the rotorbrake...

skadi

As do the Sikorsky Sea King/SH-3


Getting back to the OP, the engines can be running and the rotors held on the rotor brake.
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Old 15th October 2018 | 10:37
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Apu!

Not often seen, as photos of the VH-3 tend to be of the LH side and main cabin door, but the RH MLG sponson has an APU attached to it.
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Old 15th October 2018 | 11:00
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From: On the big blue planet
Originally Posted by BTC8183
Not often seen, as photos of the VH-3 tend to be of the LH side and main cabin door, but the RH MLG sponson has an APU attached to it.
Ok, here it is from left side



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Old 15th October 2018 | 12:41
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From: Den Haag
Originally Posted by BTC8183
Not often seen, as photos of the VH-3 tend to be of the LH side and main cabin door, but the RH MLG sponson has an APU attached to it.
You learn something new every day!
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Old 15th October 2018 | 15:41
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Ok, here it is from left side
That would appear to be from the "other" left side, but thanks for the picture!
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Old 15th October 2018 | 15:54
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From: On the green bit near the blue wobbly stuff
Nah, that's the blow-dryer for his rug!
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Old 15th October 2018 | 16:06
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Originally Posted by Non-PC Plod
Nah, that's the blow-dryer for his rug!
Is that a metaphor for his hair? Can imagine it comes in handy for some industrial scale daily hairdressing.
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Old 15th October 2018 | 16:08
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From: On the big blue planet
Originally Posted by Carbon Bootprint
That would appear to be from the "other" left side, but thanks for the picture!
Oh yes!

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Old 15th October 2018 | 18:32
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Originally Posted by 212man
Errmm....on a Sea King?
Errrm....feel free to acknowledge....
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Old 15th October 2018 | 19:16
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Hardly standard fit though.
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Old 15th October 2018 | 19:24
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Sikorsky H3. T-58 engines. Engine sits at Ground Idle in Acc drive. No clutch, no holding on rotor brake. Just sitting there at 51-58 Nf.
His helo is one of 5. They fly mostly everywhere as a 5 ship and swap postions frequently. This deters G2A missiles locking onto the one with the Protus onboard.
The APU is a test bed being readied for the replacement programme for the presidents helicopter.
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Old 15th October 2018 | 20:02
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From: New Zealand
Originally Posted by Sloppy Link

Errrm....feel free to acknowledge....
Well, to be specific, you won't find it on an actual Sea King...
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Old 15th October 2018 | 20:04
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Originally Posted by Thomas coupling
Sikorsky H3. T-58 engines. Engine sits at Ground Idle in Acc drive. No clutch, no holding on rotor brake. Just sitting there at 51-58 Nf.
His helo is one of 5. They fly mostly everywhere as a 5 ship and swap postions frequently. This deters G2A missiles locking onto the one with the Protus onboard.
The APU is a test bed being readied for the replacement programme for the presidents helicopter.
Presumably the Donald would not be aboard the test bed? So the baddies' chances are now 1 in 4!
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