My helicopter project... Can you help me???
Tricky Nekro
Posts: 218
Hi again...
I need a little help on how to make an electrical spark... I need it to set off some fireworks...
This fireworks are mini rockets that if are hold be something ,for exable your hand, do some kinda noise and if they are let free travel in a very high speed without blowing up... So with that spark I need to light them up!!!
I'm already looking for circuits... can you help me...
P.S. In my project I need to use lightweight products so an external battery isn't a solution... This also brings an other problem... If the current levels needed are very high then probably when the battery is half-empty there would be a brown down effect which will reset the Stamp... The whole project is rather sensitive for me to let something like this happen...
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-Rule your Destiny-
--Be Good. Be Bad. Be Provas--
Post Edited (Provas) : 6/12/2006 8:45:20 AM GMT
I need a little help on how to make an electrical spark... I need it to set off some fireworks...
This fireworks are mini rockets that if are hold be something ,for exable your hand, do some kinda noise and if they are let free travel in a very high speed without blowing up... So with that spark I need to light them up!!!
I'm already looking for circuits... can you help me...
P.S. In my project I need to use lightweight products so an external battery isn't a solution... This also brings an other problem... If the current levels needed are very high then probably when the battery is half-empty there would be a brown down effect which will reset the Stamp... The whole project is rather sensitive for me to let something like this happen...
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-Rule your Destiny-
--Be Good. Be Bad. Be Provas--
Post Edited (Provas) : 6/12/2006 8:45:20 AM GMT
Comments
· Provas, in all seriousness, I think you have a death-wish. You need help.· Call 9-1-1 and tell them that you are a danger to yourself and to others.
At least this is my point of view....
Now some seriousness at least...·is there anyone that can help me please!!!
Thankfully... Provas, Greece
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-Rule your Destiny-
--Be Good. Be Bad. Be Provas--
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-Rule your Destiny-
--Be Good. Be Bad. Be Provas--
When I was in my teens I made explosives and both blew myself up and set myself on fire. Luckily I have not scars and still have all my body parts, but it was from dumb luck - certainly not intelligence.
The problem is that in the U.S.A., one can be held responsible for helping you do something stupid and dangerous. If you injure yourself playing with explosives, your family may sue us for helping you. The government is also very easily upset by people making their own explosives these days. Have you ever heard of the ATF?
Can you think of something safer as a challenge -- something that you might learn a useful skill?
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"You have to have a dream so you can get up in the morning." - Billy Wilder 1906-?
·······································································Tropical regards,····· G. Herzog [noparse][[/noparse]·黃鶴 ]·in Taiwan
I'm not in U.S.A. but in Greece... Great Difference in many aspects...
Finally... The project I'm preparing is something that will help my reputation and not bring me in...
And the Fireworks is only the tip of the iceberg...
I'm preparing a dual rotor heli with GPS guidance, plenty of sensors thanks to your (generally the forum) ideas, manual guidance if needed, camera and so on... When I said I was intrested in jammers I wanted to find a way to make a wide range transmitter (radio control) and not to kill some thousands by playing with a little gadget!!!
Thanks god I'm not a phyco...
If you want to help me... that would be great... If not... It's ok... that's all...
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-Rule your Destiny-
--Be Good. Be Bad. Be Provas--
NO WAY IN HELL!
And wide-range transmitters is NOT something you 'cobble together'.
(There's a very good reason why model RC systems are short-range. If you lose sight of your plane it could KILL someone)
I can't think of ANY rockets that need a spark to ignite that you can safely hold in your hand.
NOT ONE!
Model rocket enthusiasts ALREADY KNOW how to ignite rockets with an electric pulse, and how to do it safely.
Autonomous flying vehicles with the ability to fire rockets IS BLOODY DANGEROUS, even IF they're not prohibited by law. (I don't know Greek Law on this point)
computer-guided rockets is known as MISSILES and are generally ILLEGAL to own or manufacture by civillians across the world. (The military considers it their toy and they don't want anyone else to play with them)
The device you're talking about sounds like it is taken from a bad Bond movie, not necessarily from Mr. Q's laboratory, but the opposition!
You mention that you're only 16, but also that you will cooperate with the local university?
I can tell that you haven't been in contact with them or they would already have slammed the door on you, and possibly also called the police.
So PLEASE DO NOT INQUIRE about these kinds of devices on this forum again. Othervise we'll have to alert the admins(if they're not already aware) and possibly even the Greek Police.
EVERYTHING you've mentioned so far has uses for terrorists, and well.. that 'the deadguy' part doesn't exactly scream 'sane', either.
You want to play with rockets?
Go find a local model rocket club, that's what they're there for!
(That is, if they consider you 'safe' that is. Such clubs are also getting paranoid nowadays)
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Don't visit my new website...
You'll have to find a supplier in Greece or one based in the EU, because american suppliers won't sell internationally.
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Life is one giant teacup ride.
America, I know, I live there. The government, law enforcement agencies, authoritiy figures, etc are very paranoid and delusional about violence and terrorism. Overt fear
Moe Howard
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Well well, I'm seeing things, three of them.
-Stanley Blystone
Post Edited (Three of Them) : 6/11/2006 9:22:26 PM GMT
I think you didn't understand me... You think I want to jam communications, to pursuit people with rockets and so on....
NO WAY!!!
I'm not a maniac...
And as I have seen there is an autonomous heli with two rotos using sensors and a Stamp and a GPS and so on, on this site...
Firework I know them as toys which can;t harm you... propably you though I was going to use C4!!! For god sake... NO rockets...
toys... Ether aircopressed ether with TNT ( and you have propable didn't understand me because of my english...) they fly 20 METER MAX...
and then just poof... NO EXPLOSION... You though I could be killing or even injuiring people with something that is smaller than half my finger...
I have seen a post of a guy in this forum boosting about some USB aircopressed rockets that could be easily mound one office and then just target your boss or who ever you don't like and shoot it to him!!! Ohh... I lost my eye... No worries I have another rocket for you...
This guy has mounded this rocket system to his RC heli and started playing... Fine... Noone told him he is a phyco...
You don't like the word firework = toy then it's ok... I can use this aircopressed ones...
Everything I have though of my project is on this site on this forum.... Nothing that could kill anyone...
Please tell me your opinion on these I have told you...
P.S. There is no University of U.S.A. without a Greek canidate... Insteed of helping others with ideas you just tell them they are phycos...
That's something I DO NOT like...
NOTHING BIG... JUST SHOW OFF... I CAN DO WITHOUT THEM!!!
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-Rule your Destiny-
--Be Good. Be Bad. Be Provas--
http://www.parallax.com/html_pages/resources/custapps/app_vulture.asp
And I can just go to a local airmodelism club and flight it if I can manage to make mine...
NO ROCKETS AGAIN!!! PLEASE...
And as metioned... SAFETY and STABILITY!!!
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-Rule your Destiny-
--Be Good. Be Bad. Be Provas--
That chopper was not just thrown together! It was an all out engineering project! It seems like the people who built it had a several hundred thousand dollar budget (likely million). Building one is way outside of a sixteen year old's reach. I was like you when I was sixteen, someone who feels he "knows everything". When I was about 17.5, I gained a better sense of the world. Part of learning is valuable lessons from the "school of hard knocks". I like the way you think and your interests, but I want to offer you some friendly advice:
- Please word your postings so they are less intimidating.
- Please refrain from threatning people and discussing violence with or in the presence of people you don't know well.
- Please choose hobbies that are affordable and within your limitations.
Thank you for your time
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Well well, I'm seeing things, three of them.
-Stanley Blystone
Have you flown a Heli? This is tough enough let alone doing it with any sort of animatronics. Wind speed / gust / thermal activity and such make this a real pain.·I have seen video around of what you are trying to accomplish and it takes a lot of engineering not to mention the the stability issues of a small heli releasing any cargo. I assume you will be releasing as destroying a heli each test would get rather expensive ( I know as I own 4 ).
Good luck and please rethink any ill actions
Also... the heli that those guys built was on a low budget...
For all the flying pormblems you metioned, i'll try to get as much help as I can...
I know nothing about and why such project is prohibited and I'm trying to find out... That's why I'm asking for help...
And PJ Allen... Well if it wasn't the fact that everyone said I was one I wouldn't support this...·Maybe trying to do it without asking, accomplish it, if ever, and then just hunt down some... You are blaming me for something I want to do in order to learn·NOT to KILL...
And someone who thinks I need a doctor... Maybe he is the one... And let alone how insulting this is...
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-Rule your Destiny-
--Be Good. Be Bad. Be Provas--
Post Edited (Provas) : 6/12/2006 10:08:19 AM GMT
How many kids in the USA are reported to have stolen a weapon and kill their school mates... If I wanted to kill someone I must have built a helicopter... Please...
And I'm not trying to insult... I'm in defensive position right now... I think...
And if you understand me.... I want to learn, learn....
And I'm just turned down...
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-Rule your Destiny-
--Be Good. Be Bad. Be Provas--
Thank you so very much
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Well well, I'm seeing things, three of them.
-Stanley Blystone
Start with a RC car. Or one of those RC dirigibles.
(the dirigibles are big, slow and fun. Definitely my choice if I were to start messing with autonomous systems )
Stay away from fireworks as they can be dangerous to everyone around you if mishandled.
Make certain that the object can't get out of your line of sight, and at all times have the possibility of manual override(using a normal RC transmitter/receiver system)
Play it safe and we'll help you.
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Don't visit my new website...
I know·the title was extreme... but I wanted some more attention... nothing else...
For god sake...
I know such project aren't done by one night... I ready to spent my whole summer on it...
Firstly I need to find the rotor mechanism and the blade... Do you know how will they cost me...
Secondly, I need to assemble it so that I get the best performance... How much weight lift will I get by to electrical rotors...
What kind of batteries do I need... How many Ah... for a normal one hour flight...
Which sensors I'm I supposed to use? (the IC names)
I need to use a front view camera that's why I need a good on board Transmitter or ,better, a antenna amplifier...
Some FM bands are free to all as I know... like RC car bands... So amplifing their transmittion is no harm...
I've been messing with autonomous robots some time now (I'll present you a mini-tank I've built once I translate the text!!! and before mounding the GPS to a heli I would have test it on it!!!)
As you have understant my vocabulary doesn't help me much... The are certain words that I miss...
Thanks once more for your understanding...
I can't be excused for the words I used I know...
I do not intend to lower the level of any discussion or the fame of this forum... (PARALLAX keep up the good work, So far your help is very important for me to all my projects)
Playing safely is the primare objective I have in mind!!!
Regreted, Provas, Greece
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-Rule your Destiny-
--Be Good. Be Bad. Be Provas--
There are among other things restrictions on how 'wide' a signal can be and more importantly the signal strength.
Heli rotors may be bought in RC hobby stores, though they may want to sell you a complete kit. (Spare parts can be almost as expensive, and will take a lot more work than starting with a complete chassis)
Will you be using a counter-rotating system, overlapping or non-overlapping setup?
(It may be difficult to get parts for a counter-rotating setup)
Electric helis are somewhat quieter than the liquid-fuel types, but not much more(it's the rotor that makes the most noise). This may be a consideration in some areas...
Anyway, electric helis have to weight(pun intended) payload against flight-time, and generally, RC-helis never fly more than 10 - 15 minutes at a time. I suggest checking a catalog and see what they list as flight-time.
This one from Graupner, which is capable of tackling a fair amount of wind is rated at up to 15minutes using a Li-poly cell. BUT... it doesn't have much of a payload carrying ability.
The good part, though, is that Graupner sells the rotor-assembly/engine-mount/gearing/ assemblies if you want to roll your own.
No sign of any dual-pros, though, except for a couple of small 'co-axial counter-rotating' ones.
(both rotors on the same axis.)
No Chinook or other 'flying banana' types.
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Don't visit my new website...
By counter-roating system what do you mean??? (Sorry for my English)
I thought that I have heard of a free FM band or a band generally which is free... Anyway I do need a transmition over 300 - 400 meter... (air model RC remotes all ready have such range I'm consert about the mini video camera)
About the battery... I'll see what I can get... If it can carry a big payload battery is the first think to be changed...
Thanks Provas Greece...
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-Rule your Destiny-
--Be Good. Be Bad. Be Provas--
Post Edited (Provas) : 6/12/2006 10:09:13 AM GMT
I have seen some larger .90 size helis lift up to 10 pounds when properly modified. These are used for filming movies with the camera mounted below the skids.
That is when the two rotors go the opposite way of each other(one clockwise and one anti-clockwise)
The reason this is done on the helis where both are on the same axis(one shaft within the other and one rotor above the other) is that they cancel the tendency of a heli to start spinning wildly out of control.
On the Chinook it is done because they can overlap, and having blades rotating the same way would mean that you wouldn't have blades for very long...
Another store is:
http://parts.rctoys.com/rc-toys-hobbies/RC Blimps/?sck=22310334
(I'm thinking of ordering one of their blimps. Possibly with the 'high-lift' envelope to enable it to carry a bit more)
They also have 2.4GHz colour video cameras with a range of up to 300Meters...
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Don't visit my new website...
I know that some RC helis can fly upside down by reversing the blades... So by reversing the blades but also the polarity of the motor you have the same result but reverse!!!
I did know that the tail rotor on a heli is for anti-spinning and turning but I didn't know that the rotors of chinook like helis go opposite way each other
Nice blimp up there!!! I use to call them airships but anyway... If you buy one please upload photos... they are very very nice!!!
Eric R:
Where can I find a gyro... some online shops or info about gyros are well accepted!!!
Thanks again... Provas, Greece
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-Rule your Destiny-
--Be Good. Be Bad. Be Provas--
Reversing the blades works, but not very well. Take a look at the blades and you'll see an 'airfoil'. These are 'moving wings' after all, and you want the profile the right way up to generate enough thrust.
When they fly inverted they change the angle of the blades and use brute force to combat the negative lift generated by the blades. This is of course extremely wasteful. (sucks the batteries dry even faster... and when they already uses fans to cool the packs in the heli... )
As for counter-rotating on the Chinook, take a look here:
http://www.fas.org/man/dod-101/sys/ac/h-47.htm
As can be evident on some pictures, the two propellers overlap. If the blades roated the same way, they would hit each other after only a fraction of a rotation...
I assume this is the configuration you're planning to use?
(Max load-bearing capacity, little or no torque problems)
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Don't visit my new website...
Search for Gyro
Well... Thanks for the help with the sensors...
What if the rotors are desing never and under no contitions to meet... The rotor while turning is creating a cycle...
In Chinooks the one cycle is in the other if you can understand me... By increasing the distance between the cycles we make the no to be the one inside the other... (I don't know the certain words in English to make your life easier)
Even if they are roating the opposite way... if the RPM of one rotor is reduced it will start coliding with the other until they brake... And rotors as I know are fragtile...
Thanks for your help again, Provas, Greece
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-Rule your Destiny-
--Be Good. Be Bad. Be Provas--
As far as your fm band requirements....there are bands set aside for Remote control devices. You'll want to make sure you will not have any interference from other FM sources that may cause your heli to go out of control. This does not mean you can crank up your transmitter power as you are still regulated to a certain power output.
If you're playing in your backyard, only going 50ft up and around....you'll probably be fine....but just be aware that there have been some serious injuries reported by these type of craft...their rotors carving in to peoples' skulls.
Also, the people that frequent this board are under no obligation to 'help'. Most do out of their own respect for the hobby....and typically, that's how they've learned (by others helping out). The one thing that will get you some flaming is advertising some immature ideas. Doing your own research and asking the right questions will get you a lot of help as well....there's nothing worse than someone coming in with an idea they haven't spend the time investigating...and expecting people on the forum to do all the work for them.
They say there's no dumb questions....well, there are well thought out questions that WILL get you the answer you need (whether you want it or not).
Remember, being a hobby-ist is about learning and having fun....but mostly staying safe and keeping others safe!
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·
Steve
"Inside each and every one of us is our one, true authentic swing. Something we was born with. Something that's ours and ours alone. Something that can't be learned... something that's got to be remembered."
We took a·remote control helicopter and mounted a number of model rocket engines on it as missles and let the microprocessor "fire" the missle. It took us a couple of weeks to get the exact workings down, so it would not tip the helicopter over with the force of the missle taking off. The main part of the project was the interface we completed between the remote and a microprocesser allowing a preset value to be typed in to the screen, and have the helicopter respond.
Such as
Height· = 10Ft,
Go west 100 Ft,
Fire Missles,
Height =·8·Ft.
Height = 2 FT
Height = 0 FT.
It took a great deal of effort to make the positioning work, we ended up using 3 transmitters and using the microprocesser to triangulate its position within those markers. Granted our working area was only 30' x 30' we had a pretty good project.
BTW - We took 3/4 of the powder out of the rocket engines so they would only go a slight distance.
·
It's certainly not much of a danger, unless you are allergic to splinters!
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·
Steve
"Inside each and every one of us is our one, true authentic swing. Something we was born with. Something that's ours and ours alone. Something that can't be learned... something that's got to be remembered."