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HomeScaleAircraftHelicopterScale Model RC Helicopters › MD500 emergency auto
04-22-2013 06:54 AM  5 years agoPost 1
solo

rrApprentice

San Antonio Tx, USA

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I was out today flying my Raptor 50 MD500 Funkey fuse. I notice more smoke than usual from the exhaust but engine sound good. Flew around a little more then came back into a 50 foot or so hover and BAM! my engine stopped (my heart to). I dropped the throttle stick slowly and as the heli came down I thought my baby is going to be totaled. It was a slight breeze; as the heli got a few feet from the ground I slowly increased pitch. To my surprise she responded very well. she touched down so soft; I don't think I broke a blade of grass. lol. Mind you I only do autos on the sim. I always thought my MD500 was on the heavy side and wouldn't auto well. Now I know she will auto, time to practice with my other 50. You never know when you need to do an emergency auto.

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04-22-2013 12:15 PM  5 years agoPost 2
Thumper217

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Slidell, LA - USA

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Good save Solo!
I practiced autos on the sim as well and one day while I was at the field was watching a friend doing autos and making it look easy. I finally decided to try it with my pod boom electric. We talked about it first and went through the procedures and decided that first I would try to just see how it would behave once I hit throttle hold and then re-arm and practice that a few times. Well first time I tried I was reminded that my esc was set with a slow spool up and into the ground she went

Been nervous as heck since then to try again but now I just bring into a hover and hit TH and land. Started at about a foot off the ground and am slowing working my way up. It's one of those skills I really should have but hope to never have to use. Can save your bird in an emergency though as you know! Watched Greg Nowell Auto his BIG R22 in at CHF due to an emergency and he was way out there but saved the machine.

Good luck!

Thumper

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04-22-2013 08:31 PM  5 years agoPost 3
joeb56

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Newcastle,NSW - Australia

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A good reason to set your throttle hold curve as a flat line just above the de arm point - you still get the effect of cutting power to the head but with a bail out if required
Cheers
Joe

On the J curve of all things Heli, I am still going down hill, FAST

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04-23-2013 02:31 AM  5 years agoPost 4
Copter Doctor

rrProfessor

Enterprise/ft.rucker ,al- home of army aviation

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its always a great feeling when you save your heli with an auto. i auto's my very heavy OH-58D after the motor burned up and i had the same thoughts as you did, but a slide-on landing resulted in no damage at all. good job to you

drive a rotary, fly a rotorcraft

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04-23-2013 02:58 AM  5 years agoPost 5
Star1

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San Jose CA

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I had to auto my Graupner BO-105 2 times. First time was because the tail wire drive snapped in flight and I lost the tail. The second time was because one of my lipo batteries went dead in flight. Both landings were good with no damage. I had the helicopter in forward flight when I started the autos. I had to auto my Vario Huey at least 5 times due to various reasons. Flattened the skids the first two times because I lost the tail when I had it in a hover, the so call dead mans curve. The last three times were in forward flight and no damage.

Yesterday I had to do an unexpected auto on one of my pod and boom gassers because the rear tail support strut broke loose and it was hanging free next to the tail rotor. Landed it with no problems.

The biggest thing is to stay calm and remember that you have control of it until the rotor blades stop. An auto does not have to be a rock falling out of the sky. As long as you have negative pitch it will be ok. I have been on the real EC-120's during an auto rotation and the lost of altitude was slightly more than a regular landing, and not by much. In fact on the real one you need to watch your head speed because you could overspeed the rotor really easy. My Vario huey weighs 23 pounds dry, and it autos by far better than all the smaller helicopters I have.

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04-23-2013 03:01 AM  5 years agoPost 6
Star1

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San Jose CA

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Forgot to mentioned that I also auto my Scale House Huey 2 times due to the esc cutting out. Both landings were ok with no damage, but again the helicopter was in forward flight.

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04-24-2013 09:14 PM  5 years agoPost 7
fireblade48

rrApprentice

Silsbee, TX.

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Autoratation---------
Well I can say that when I had to do an auto with my Hirobo Lama due to a nitro engine failure, I was going down wind. Had I been going into the wind I would have saved the bird. Despite that, the damage was minimal in consideration of how hard it hit on the skids. From that day on I bought another kit from Hirobo, and converted it to E-Power, and I am glad I did. The trouble is that with autorotations, is you never get them when the bird is a good attitude, it seems to me it happens at the wrong time. Like, when it happened to me, going down wind in a 25 MPH wind But I agree practice makes perfect.

Mike

PS It helps having good quality blades, and a properly set up helicopter. course I have yet to figure out a remote controled balistic parachute for my helis................ For that unplanned emergency...........LOL

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04-24-2013 11:17 PM  5 years agoPost 8
Copter Doctor

rrProfessor

Enterprise/ft.rucker ,al- home of army aviation

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Note that electrics can lose power suddenly too ;-) my 58D did.

drive a rotary, fly a rotorcraft

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04-25-2013 04:27 AM  5 years agoPost 9
rcheli808

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Mililani,Hi-USA

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Hey Star1,
I think you are on your way to getting a Maintenance Test Pilot Patch with all those Emergency landings.

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04-25-2013 02:53 PM  5 years agoPost 10
Wayne Parrish

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Apex,NC,USA

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Fireblade, you should have just pulled the collective down and done a 180 turn back into the wind. Course hindsight is always better.

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04-25-2013 05:38 PM  5 years agoPost 11
fireblade48

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Silsbee, TX.

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Wayne,
you are correct I wish I would have had the fore sight to do just that.

MIke

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04-25-2013 06:33 PM  5 years agoPost 12
Wayne Parrish

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Apex,NC,USA

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I flew my Vario Bell 47 GIII for almost three years and I never remember flying it without making at least two or three autos during the flight. It weighed about 33 lbs and was/is the most majestic auto'ing hell I've ever seen. I try to tell the guys at our field that you HAVE to PRACTICE autos !! There is no other way to learn than to do it,before you HAVE to do it one day.Learning the basics with a software program is great,but nothing like the actual practice.If I couldn't do autos with a hell,I would either get rid of thats hell or quit flying helis,that how much I LOVE to do auto's !! ITS JUST PLAIN FUN,and teaches you how to make your hell survive. Oh well,I'll quit beating the drums ! WP

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04-25-2013 07:52 PM  5 years agoPost 13
fireblade48

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Silsbee, TX.

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Auto's
Wayne,, Sir, I agree, the trouble was with my situation I was already going down wind, about 15 feet in the air. I did drop the collective as soon as I heard the engine quit. However it went in fast and hard, It touched down on the skids, and then bounced, its the laying on its side after the bounce that damaged the heli. It did well considering the weight, disk loading and going down wind. If it had been into the wind the outcome would have been vastly different.

Mike

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04-25-2013 08:20 PM  5 years agoPost 14
Wayne Parrish

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Apex,NC,USA

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Mike, Thats one of those "OH CRAP" moments !! Been there ,done that also.Not all autos are going to work out,they don't on full scale either! Just plan on it everytime you go fly and you'll not be disappointed . WP

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04-25-2013 09:01 PM  5 years agoPost 15
fireblade48

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Silsbee, TX.

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Wayne, I think I would be willing with my pod and boom Logo 500, But I would be afraid on a heavy scale bird Now I have had to do emergency Auto's with the Logo 500 with good outcomes. But you are right about the OH CRAP moment, they just suck!

Now I have a Century Hughes 300 that seems to Auto just fine. I have installed a 3 blade head on my Lama swinging 550mm blades and it seems to float a lot better than with the original 476mm skinny stock blades it comes with. So maybe it might do better now. It is still pretty heavy at close to 11 lbs for a .30 size machine

Mike

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04-26-2013 05:22 PM  5 years agoPost 16
Wayne Parrish

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Apex,NC,USA

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Mike, When I am unsure about the reserve and lift with a hell I get it light on the skids and flip TH and start feeding in collective to see how many seconds I have .I think about everyone does this with a new ship.It is truly amazing at how much reserve and the auto personality of that big heavy Bell 47. I have only "had" to make a "real" auto with the Bell and that was from a lead ball that shorted the spark plug electrode and stopped the engine. I happened to be flying downwind at about a hundred feet when it stopped as if you had cut the switch off.The practice 180 autos I had done kicked in and I flew it around and did a slide on just like a big boy.I used to hit throttle hold at about 15-30 feet on climb out just to practice the same autos. As you can see I LOVE TO DO AUTOS ,PERIOD ! Thats one reason I love my Vario Acrobatic,it doe s fabulous autos. WP

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04-26-2013 10:32 PM  5 years agoPost 17
fireblade48

rrApprentice

Silsbee, TX.

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WAyne,
Is your tail driven after you hit throttle hold, my lama is not. Now my Logo-500 is driven, and so is my hughes 300. Can you still do 180 autos with out and tail pitch input. I mean the Lama's blade will free spin forever, but when that motor stops so does the tail rotor.

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04-27-2013 02:38 AM  5 years agoPost 18
Wayne Parrish

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Apex,NC,USA

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No sir ,my tail is not a driven tail ,but if you keep it in forward flight the tail will "follow"along just fine. NOW,with that said,IF you have a lot of wind to contend with,try to setup your auto with the final leg into the wind and keep it moving forward until you need to arrest the descent and start adding pitch for touchdown.I was out with my Acrobat today and started a very high auto into the wind and the wind switched by the time I had to slow it down and of course it ended up turned straight at me for the touchdown. Glad I finally got decent at nose in !! I have thought about trying to come up with a driven system for the Vario ,but honestly its not really necessary. WP

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04-27-2013 02:46 AM  5 years agoPost 19
Thumper217

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Slidell, LA - USA

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Mike, almost had to try it today with the Lama. Started flying around a little today making adjustments to the gains. At first everything was going good hovering and then flying circuits but then all of the sudden I started having trouble with the tail. First it started wagging a little and then multiplied quickly! she was piroing pretty good until I hit TH and she stopped and I slid it in from about 6 feet. It definitely had my attention! The problem is with the mesh between the main gear and the tail drive gear.

Thumper

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04-27-2013 03:00 AM  5 years agoPost 20
Wayne Parrish

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Apex,NC,USA

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That'll get the old heart rate going !

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HomeScaleAircraftHelicopterScale Model RC Helicopters › MD500 emergency auto
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