29 Nov 2025, 07:36 [ UTC - 5; DST ]
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Post subject: Re: Accelerated stalls and engine shutdown video in the MU2 Posted: 17 Jan 2017, 23:22 |
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Joined: 12/03/14 Posts: 20781 Post Likes: +26295 Company: Ciholas, Inc Location: KEHR
Aircraft: C560V
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Username Protected wrote: Single engine work is very benign. It seems contrary to what one would predict from looking at the plane, the high power engines, the small wing, the short tail, etc. But, it is true. The OEI process is very much like a jet outside of feathering the prop. You leave flaps down, you trim for ball center, you fly straight ahead, get altitude/speed, retract flaps on schedule, fly away. Mike C.
_________________ Email mikec (at) ciholas.com
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Post subject: Re: Accelerated stalls and engine shutdown video in the MU2 Posted: 17 Jan 2017, 23:44 |
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Joined: 12/03/14 Posts: 20781 Post Likes: +26295 Company: Ciholas, Inc Location: KEHR
Aircraft: C560V
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Username Protected wrote: Do you actually trim the spoilers as you write, or does the roll trimming occour via those little mini-ailerons on the outboard trailing edge? The mini ailerons on the trailing edge of the flaps are electrically trimmed. The spoilers are not trimmed. That would mean drag having one slightly out. Mike C.
_________________ Email mikec (at) ciholas.com
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Post subject: Re: Accelerated stalls and engine shutdown video in the MU2 Posted: 17 Jan 2017, 23:51 |
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Joined: 12/03/14 Posts: 20781 Post Likes: +26295 Company: Ciholas, Inc Location: KEHR
Aircraft: C560V
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Username Protected wrote: At the very end we shut one down No beta follow up on the power lever. 40 lashes with a wet noodle for you. Instructor doesn't catch it or comment on it, and even says you are done. 40 lashes with a dry noodle for him. There are only two memory items on the engine shutdown checklist: feather and beta follow up. Mike C.
_________________ Email mikec (at) ciholas.com
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Post subject: Re: Accelerated stalls and engine shutdown video in the MU2 Posted: 17 Jan 2017, 23:54 |
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Joined: 05/01/11 Posts: 2520 Post Likes: +1516
Aircraft: F8L Falco
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Username Protected wrote: I've never flown an MU2 but I do have an interest in them. Do you actually trim the spoilers as you write, or does the roll trimming occour via those little mini-ailerons on the outboard trailing edge? You have the right idea. There are trim tabs along the trailing edge of the flaps as I recall. (David or Mike will refresh my memory; it's been 30 years since I last flew one) You set those via a knob on the pedestal to trim the wing so that there is no roll spoiler deployment. Works great. As has been said earlier, the MU2 is not difficult to fly, just different
More like a jet than other turboprops. When you lose an engine right after liftoff (about 100 KIAS) it's alooong way to Vyse of 155 and waiting for an appropriate speed to retract the flaps. But getting the spoilers down, gear up and patience will get the job done. George
_________________ Amateurs train until they get it right. Professionals train until they don't get it wrong
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Post subject: Re: Accelerated stalls and engine shutdown video in the MU2 Posted: 17 Jan 2017, 23:56 |
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Joined: 05/29/09 Posts: 4166 Post Likes: +2990 Company: Craft Air Services, LLC Location: Hertford, NC
Aircraft: D50A
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Username Protected wrote: Do you actually trim the spoilers as you write, or does the roll trimming occour via those little mini-ailerons on the outboard trailing edge? The mini ailerons on the trailing edge of the flaps are electrically trimmed. The spoilers are not trimmed. That would mean drag having one slightly out. Mike C.
Thanks Mike. That is kind of how I thought it worked. Spoilers are connected to the yoke and the aileron-like trim tabs work off of a trim switch. So I guess the trick is to keep the ball centered with rudder and remove roll tendency with trim so as to not kill lift and increase drag with the spoilers. If that is right I guess it makes the electric roll trim system muy importante.
_________________ Who is John Galt?
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Post subject: Re: Accelerated stalls and engine shutdown video in the MU2 Posted: 18 Jan 2017, 00:12 |
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Joined: 12/03/14 Posts: 20781 Post Likes: +26295 Company: Ciholas, Inc Location: KEHR
Aircraft: C560V
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Username Protected wrote: So I guess the trick is to keep the ball centered with rudder and remove roll tendency with trim so as to not kill lift and increase drag with the spoilers. If that is right I guess it makes the electric roll trim system muy importante. Its not super critical to take out the roll trim. It helps a little with drag so it slightly improves single engine climb. If you can't operate the roll trim, you can safely fly, it will just take some roll input to hold wings level. You can see this in the video since the pilot doesn't trim it out and you can see the yoke deflection. The main drag reducer with an engine out is to feather, the next is to fly with the ball centered as any side slip creates a lot of drag. The spoiler trim out is very minor by comparison. Mike C.
_________________ Email mikec (at) ciholas.com
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Post subject: Re: Accelerated stalls and engine shutdown video in the MU2 Posted: 18 Jan 2017, 01:31 |
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Joined: 06/09/09 Posts: 4438 Post Likes: +3306
Aircraft: C182P, Merlin IIIC
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Username Protected wrote: At the very end we shut one down No beta follow up on the power lever. 40 lashes with a wet noodle for you. Instructor doesn't catch it or comment on it, and even says you are done. 40 lashes with a dry noodle for him. There are only two memory items on the engine shutdown checklist: feather and beta follow up. Mike C.
Mike, what is beta follow up? Nothing like that in my AFM or training.
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Post subject: Re: Accelerated stalls and engine shutdown video in the MU2 Posted: 18 Jan 2017, 01:39 |
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Joined: 01/11/16 Posts: 462 Post Likes: +361
Aircraft: Bonanza G36
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Power lever should go full forward after an engine failure.
Moving the power lever fully forward drives the prop blade to the lowest angle of attack in the event the feather valve or NTS system has not functioned properly
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Post subject: Re: Accelerated stalls and engine shutdown video in the MU2 Posted: 18 Jan 2017, 01:41 |
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Joined: 06/09/09 Posts: 4438 Post Likes: +3306
Aircraft: C182P, Merlin IIIC
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Username Protected wrote: Power lever should go full forward after an engine failure.
Moving the power lever fully forward drives the prop blade to the lowest angle of attack in the event the feather valve or NTS system has not functioned properly Yes this is also taught for the Merlin (I assume all Garretts). Still not sure what "beta follow up" is.
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Post subject: Re: Accelerated stalls and engine shutdown video in the MU2 Posted: 18 Jan 2017, 01:47 |
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Joined: 11/08/12 Posts: 7719 Post Likes: +5106 Location: Live in San Carlos, CA - based Hayward, CA KHWD
Aircraft: Piaggio Avanti
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Username Protected wrote: Still not sure what "beta follow up" is. Different words that mean the same thing. "Beta follow up" means move the power lever full forward.
_________________ -Jon C.
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