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HelicopterSafety - RC Helis are not toys › Hit in head with 700, survivable depends
10-09-2017 05:07 PM  9 days agoPost 1
icanfly

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ontario

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here's a topic of great concern run on fb and hf recently that has me miffed about how ignorant a lot of people who fly rc helis are. This is the topic on hf you should take a look at and consider, https://www.helifreak.com/showthread.php?t=792519.

Now why something like this is so close to home in some respect is that I've actually experienced a similar impact while flying only in the simulator, however repeated a half dozen times before I begun to counter react differently and also NEVER FLY CLOSE to me. I also NEVER FLY THE HELI OVERHEAD at close range. There were times when my eyes could not make out the orientation similar to the one who was hit and the heli ended up smashing into me in the sim, thankfully only the sim during wild no brain freestyle 3d (finger reactions only and heli goes where it goes, just keep it off the ground).

Now, you question how it could be survivable? depends on what part of the blade you are hit with and if you hit a main artery. When Roman was hit he was also hit with a heli speeding at 100mph, add in the rotary speed of the blades and you have quite a swing. He was also probably hit with the tip carrying the maximum speed and impact force due to the 25gr ballast within the blades remaining 100mm of tip.

When you calculate rpm it will be the same along all sections of the blade from tip to root but when you reduce the circumference the inner portion of the blade decreases in speed due to the shorter distance it covers in the same rpm, therefore the blade will not be exerting the same amount of momentum at the tip compared to the root or half a blade out (effectively half the distance = half the mph).

If I was able to reply to the hf topic I would have advised anyone flying in dark skies on a regular basis get some colored orientation led's and point some up, down, sides, and nose/tail. Don't use the spot beam ones but the frosted type. I've flown a rc heli at night with nav lights at night and it can be done but takes some getting used to.

I know what it's like to ditch a heli and the disgusting sound it makes when hitting an object or the ground, had to ditch a 450 when I flew across the sun and was temporarily blinded, brace yourself.

That guy had the heli only knife edge after a flip to upright so he thought and added cp rsu thereby into himself. He made the dangerous mistake of doing flips 90° in front of him like shoveling, other people over the years have warned of not flying toward yourself, not flying flips at 90° to yourself, not flying behind yourself neither over yourself and a few other proximity warnings for good plain old sensible self preservation concerns.

Why should I care? I've flown on a dark evening with snow and everything was dark and grey, the heli had no canopy and I was fifty feet out doing flips and rolls, inverted a little, getting snow in my eyes, but only with a 450 (which to some might be more challenging than a larger heli). leds were visible from the gyro, esc, and a small video cam on the nose so at least I had those to assist in referencing the position, great fun and learned so much.

take a lesson, luckily my own accidents were sim only and it should always be that way if you practice in the sim and find out what can go wrong before you play in real life. I adjusted my flying and attitude, I was very frightened by the sim impacts enough to be much more cautious irl and recognize where problems might come from.

Not a speech just some anecdotes and advice, keep it real, keep safe, know your limitations and STOP if you feel out of your comfort zone.

thanks.

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10-09-2017 08:23 PM  9 days agoPost 2
Andy from Sandy

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Bedfordshire, UK

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As we know things happen very quickly with helicopters of all sizes.

I have been at my club for 10 years and on very rare occasions even an experienced pilot can get caught out with the model coming closer than expected or crossing the flight line.

That is keeping it real from pilots who do not normally fly close to themselves.

Travelling at 88 feet per second (60 mph) it doesn't take long for something bad to happen.

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10-09-2017 09:35 PM  9 days agoPost 3
chopper37

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NJ and Long Island

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edit

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10-09-2017 09:46 PM  9 days agoPost 4
RM3

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Killeen, Texas - USA

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Travelling at 88 feet per second (60 mph) it doesn't take long for something bad to happen.
yes it does... In all honestly here is only so much you can do to avoid an accident. We have all heard it before... things like " this is why I dont fly alone..." well accidents happen with or without people, the only thing about flying with someone is they can take you to the hospital. The other is "this is why I dont fly close to myself" well, the fact is we all know of people that were hit by someone else's helicopter/plane. We can do alot of things to reduce being hit.... probably the best is to fly from a protected area such a a flying station that has a safety net 4.5 feet tall to front and sides to allow you to crouch and shield you somewhat, but these make flying feel weird (for me anyway). The other to to practice flying ONLY left to right or right to left at the field... the truth is alot of pilots that dont know how to effectively fly in all orientations and directions will typically fly away from themselves and back towards themselves... worse is many pilots will fly close enough so that they can clearly see the heli especially if they wear glasses, sometimes almost directly overhead, which of course now puts them closer to the danger...

but no matter what you do, there is always a risk with these "toys". if you wish to eliminate the risk get a VR headset and fly a sim... cause in order to improve you have to fly out of your comfort zone to some extent... otherwise we would have a bunch of people simply hovering tail in all day long...

showing a preference will only get you into trouble, 90% of everything is crap...

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10-10-2017 01:37 AM  9 days agoPost 5
MattJen

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UK

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the truth is alot of pilots that dont know how to effectively fly in all orientations

that is so true....

All The Best

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10-10-2017 01:39 AM  9 days agoPost 6
Doublah

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USA

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I do think we should fly with nets in front of us. Clubs should require it....as of by yourself that is hard to protect. Baseball is figuring out quickly about nets as a little girl got hit by a foul ball. Let's stop this accident again from happening!!!

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10-10-2017 04:52 AM  9 days agoPost 7
icanfly

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ontario

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I once put a huge orange tape square on the bottom of one of my helis in order to see it better if it ever got overhead and too closely and as it was making a bottom to me pass. It was referenced with the skids at first until I decided to say the heck with that and make some changes another of which was to paint the tips of my blades florescent orange, tops only as bottom was not referenced by the blades the tape square was. This was all in the early days and have since gotten a whole lot better at knowing what the heli is doing one being flipping with pitch at 0 cp until it is completely right side up. now if the blades on the doods heli had a bright color on the top and a different color on the bottom he would likely have known the heli was not completely rsu before adding cp plus he should have known the roll rate instinctively and not backed off of roll before he did.

A bad habit can be viewing and flying the heli from pov, that is to fly it as if it was on a control line flown as if it was always level in front of you but then higher up and angled to the earth. Overhead has to be flown from the bottom out more like a kite than control line.

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10-10-2017 07:00 PM  8 days agoPost 8
Andy from Sandy

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Bedfordshire, UK

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yes it does...
@RM3, With the model going quite fast it does take a long time for something bad to happen?

Can you explain please?

The rest of what you wrote seems to agree with what I put about even for the best pilots anything can happen at some point, the risks just have to be managed.

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HelicopterSafety - RC Helis are not toys › Hit in head with 700, survivable depends
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