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Safety - RC Helis are not toys > Two killed by model plane in Hungary :(
 
 
seattle_helo
Key Veteran
Location: Seattle, WA USA

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No, it's quite on topic. Indeed, this accident was caused as a result of the pilot/aircraft RF link failing. We have been using the same, antiquated RF scheme to control our models for almost the last thirty years. At least, it's been that way here in the USA. RF failures happen all the time. It's part of the hobby, people just accept it and try to deal with it and it's total nonsense. SS could be vastly superior to what we have now. Not just a little superior, but VASTLY. Please don't confuse all SS with the consumer level devices that many of us use everyday. It could be done right, and the technical challenges could be addressed. Most of the challenges have already been addressed, actually, in high power commercial devices. The cost for a high end SS system will be high, however, and I think the major manufacturers are hesitant to release a product that only a fraction of modelers could afford. But accidents like this one very clearly illustrate the need to get away from single frequency LF operation. Too many risks, especially in certain situations, as this very sad story illustrates.

And, HeliBlades, many thanks for taking the time to translate and post those findings. It is very valuable information. Thank you.

nick
05-19-2006 Over year old.
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nitro 200%
Heliman
Location: Leiria -Portugal

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Hello Everyone.
Indeed a very sad happening.Here in Portugal we heard the news early Sunday morning at the airfield, In behalf of the aeromodelers here in Portugal,I would like to send your condolences to the family and friends of the victims.I guess this happening touched and alerted all r/c fliers over the world.
05-20-2006 Over year old.
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ShuttleJock
Heliman
Location: Norman, Oklahoma

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Take cover here comes the legislation. We'll all be flying control line soon.

There is a billboard on the highway between Chickasha and Oklahoma city. I thought that the comment was quite relevant. The sponsor of the sign was unknown but it said...

"We used to suffer from crimes, now we suffer from laws."
05-21-2006 Over year old.
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Naomi
Elite Veteran
Location: Ontario, Canada

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Quote 
Take cover here comes the legislation. We'll all be flying control line soon.


That could probably be true.. but it's an accident. Just like any other type of transportations.. It killed people, don't mean that banned people from operating vehicles. It's all come down with accident or deliberate cuased of accident. The video below is an excellent example of people with disregard of other peoples live flying giant plane in a confined area.

Playing with Fire Video

Naomi
05-21-2006 Over year old.
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mike the snake
Senior Heliman
Location: santa rosa california

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Sprktrum DSM technology will make these terrible accidents a thing of the past.
06-13-2006 Over year old.
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w.pasman
Elite Veteran
Location: Netherlands

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Quote 
Please don't confuse all SS with the consumer level devices that many of us use everyday.



Why not? They are on the same frequency. Power drops off VERY fast with distance and normal wireless devices can be boosted to improve range so Tx power is no argument either. In fact, moving to SS will only evaporate all liability possibilities ("you knew that you were not the only one on that channel so you deliberately took that risk" ).
06-13-2006 Over year old.
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seattle_helo
Key Veteran
Location: Seattle, WA USA

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Quote 
Why not? They are on the same frequency.


Because they are not necessarily on the same frequency. SS does not mean 5.8 or 2.4 GHz. SS can be used efficiently in almost any part of the spectrum.


Quote 
Power drops off VERY fast with distance and normal wireless devices can be boosted to improve range so Tx power is no argument either.


Sure it is. Most consumer devices use very low power output. Usually less than 250mW and usually much less. A RC system would be at least 750mW and could even be 1W.


Quote 
In fact, moving to SS will only evaporate all liability possibilities ("you knew that you were not the only one on that channel so you deliberately took that risk" ).


Nonsense.


nick
06-13-2006 Over year old.
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w.pasman
Elite Veteran
Location: Netherlands

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Yes, CAN be. But the question is where will we get and who will we share it with. So far it's all on the same band as the other wireless goodies which nullifies all theoretic advantages.
My trust in a government capable of keeping these frequencies just for these RC devices is about zero. There is just way too much money to earn by selling them to more lucrative buyers than hobbyists.

Quote 
Sure it is. Most consumer devices use very low power output. Usually less than 250mW and usually much less. A RC system would be at least 750mW and could even be 1W.

Which just does not help. I repeat, drops off VERY fast with distance. So if the disturber is only little closer to your receiver the disturber wins.

Quote 
Nonsense.

We will see. Proof of the pudding... but I won't be the test case.
06-13-2006 Over year old.
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seattle_helo
Key Veteran
Location: Seattle, WA USA

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Mr. Pasman, I don't agree with your assessments and I think this thread is going in the wrong direction. People died because of an accident related to a RF failure. Our current system is old and unsafe. It relies far too much on people being vigilant and knowledgeable about frequency coordination. And a single frequency is vulnerable to many other potential problems in addition to human error. A SS system offers many advantages for us. Technical issues can always be solved and many military and commercial users use SS for critical tasks everyday. It can work for us too. The cost will be higher and not everyone will want to buy such a system, but many do. My only hope is that something is released sooner than later. Thanks for your thoughts. Goodbye.

nick
06-13-2006 Over year old.
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jb_turner
Elite Veteran
Location: USA

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From my understanding it was not RF failure but it was because a radio station possibly bled over unto that channel.

JB "Do a SEARCH" Turner
06-13-2006 Over year old.
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w.pasman
Elite Veteran
Location: Netherlands

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Quote 
I think this thread is going in the wrong direction.

Yes that's why I marked this issue as off-topic. Some people insisted on furthering it...
06-14-2006 Over year old.
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Jon the Rooster
Elite Veteran
Location: Johns Island, Charleston, SC

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http://english.mti.hu/default.asp?m...5&newsid=219892
I dont see any video, do I have to click somthing when it opes to view?

and one more thing "DON'T BE AFRAID!"
06-18-2006 Over year old.
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Naomi
Elite Veteran
Location: Ontario, Canada

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Click here to watch the video
If you understand polish..

Naomi
06-18-2006 Over year old.
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JR_Vibefreak
Senior Heliman
Location: Bangkok Thailand & UAE Dubai

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That is just crazy!
I wonder if the band 29mHz is Free in europe?

GIXXER4LIFE Philipp
06-28-2006 Over year old.
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w.pasman
Elite Veteran
Location: Netherlands

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There is no single frequency allocation for "europe". Every country in Europe has its own regulations in this respect. For instance the Netherlands has sold the UMTS frequencies to the phone providers for about 3billion euros. In germany the providers had to buy the same channels again, probably for even more
06-28-2006 Over year old.
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Chaos Kid
Heliman
Location: UK

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Evryone goes on about helis commiting the accidents but there are just as much plane accidents happening
07-04-2006 Over year old.
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helimodels
Senior Heliman
Location: Dublin, Ireland

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Quote 
driven off by the cross-wind the model flew uncontrolled from the airfield to several hundred meters away into the crowd and impacted there


can anyone confirm the throttle was set to failsafe low? I mean "several hundred metres"? Is this a fact?
08-11-2006 Over year old.
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