PITA My buddy has 1 not sure which one.I live in the desert he said if it gets over a certain temp its worthless. Seen him fly it once and attempt to probably 3 times. And ground support is expensive. I like the good ole fire n smoke.
Hi,
In Poland we're building hybrid rocket motors for a year, because in our country hybrids are only one legal propulsion. Solid rocket motors contain an explosive materials and there are illegal. Building motors on a sugar also is illegal. So we don't have any other alternatives such as hybrid motors. We don't have Cesaroni, Aerotech motors, cause we are not in a TRIPOLI or other association. Ground support is quite expensive, and Nitrous Oxide also is expensive, but these motors is only road to do legal rocketry in Poland.
Damian
Damian, thank you for pointing out that from a legal standpoint hybrids have the advantage because they do not use highly flammable materials. Nitrous oxide is less than half the cost of AP another advantage. For non- Hypertek you do need a pyro preheater grain. But even this can be done with gaseous oxygen and steel wool.
Hi,
In Poland we're building hybrid rocket motors for a year, because in our country hybrids are only one legal propulsion. Solid rocket motors contain an explosive materials and there are illegal. Building motors on a sugar also is illegal. So we don't have any other alternatives such as hybrid motors. We don't have Cesaroni, Aerotech motors, cause we are not in a TRIPOLI or other association. Ground support is quite expensive, and Nitrous Oxide also is expensive, but these motors is only road to do legal rocketry in Poland.
Damian
As I wrote in our country we don't have any commercial motors. We must build the motors completely from scratch. So we acquire experience while we testing our constructions. The same is in the case solid rocket motors. We must project them and make it in the garage, despite the fact that it is illegal - we're talking with the Ministry of Economy and we want to legalize it. We want building research rockets, but now only legal road is hybrid propulsion.
I envy you that you have large choise of legal solid rocket motors. And you don't have to calculate rocket motors - you will buy it and you may fly with legal and safe rocket motor...
N2O is easy in handle, but in Poland you must have a business activity and write a statement of the purpose to using Nitrous Oxide. And you have to carrying heavy gas cylinders.
Solid rocket motors and hybrid propulsion are two oders kind of propulsion, with other characteristic and other advantages/disadvantages. However it would be great to have an opportunity of choice the legal propulsion, so you are in better position than us .
Damian
Do you ever travel to other countries to fly rockets? There was an article about German rocket club Arbeitsgemeinschaft Modellraketen holding a launch in Leipzig in Rockets Magazine. I know that Leipzig is a long way to go but it could be worth the trip.
When rockets are outlawed only outlaws will have rockets. You can have my rocket when you pry it out of my cold dead fingers.
Yeah, I know. But excluding the question of legality of the motors, launching rockets is legal. We cooperate with the military and we launching our rockets on a military ground areas where isn't civil law, but military law and it its legal. Couple of our rocketeers go to Germany on RJD rocket meeting and do the license there. I will go there next year.
I don't understand you. Hybrids are legal propulsion and we can build it. It isn't so dangerous. About solid rocket motors we have been talking with the Ministry of Economy since 2010 and we try to legalize it. One of polish rocket team wanted to open a business which will produce legal SRMs. But it is not a simple matter. We are doing everything to legalize solid rocket motors in our country. People who have builded SRMs and hybrid motors are wise and educated. Couple of us have been building a rockets since 70s!!! Our buildings aren't unthought.
To sum up, we are using hybrids beacouse at the moment it is legal road to making research rockets and we are trying to legalize solid motors all the time.
This was an attempt at humor or just plain silliness. If you substitute the word "gun" for the word "rocket" in both phrases, you'll have a couple of expressions some gun-nuts in the US use.I don't understand you.
Good for you pursuing your interest in this hobby of ours with only the hybrid motors available to you. What is the range of total impulse for the various motors you can use? In the US, the hybrid motors I've seen have only been larger models but that may be because the smaller ones would be too expensive compared to the available solid propellant motors.
My friend are building E-class hybrid motors, cause hardware costs about $15 and reloads ~ $2.
This motor is quite more expensive that F-class solid motor which we have from Czech Republic ($1)
Do you ever travel to other countries to fly rockets? There was an article about German rocket club Arbeitsgemeinschaft Modellraketen holding a launch in Leipzig in Rockets Magazine. I know that Leipzig is a long way to go but it could be worth the trip.
I've never flown anything but hybrids. Yes they are complex, finicky, and temperamental. They also give a little relief from the boredom of Whoosh! Pop!
Kevin
If you consider all the extra weight of the hardware, the performance of the smaller hybrids is much lower than that of a comparable solid. You have to be in the L and above range to see any real gains or benefits.
JD
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