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Model Rockets
Model rockets are made or assembled by hand, and propelled by a variety of means; the hobby can be quite simple, or very involved. This category will cover the information and skill levels on making and launching model rockets.
270 Questions
If it spins while fireing upwards then yes because it makes it pirce the air better so it will have less risistance. But if it spins out of control then no
The fins on a rocket are just there to create stability. As long as there are enough to provide a restoring force against a disturbance, it shouldn't matter. But ...
Enough means at least three, symetrically placed, with enough area so that when the rocket tips off of its path a little bit the fins provide aerodynamic force to put it straight again. If you only had two, a disturbance in the plane of the fins would not get corrected and the rocket would veer off course. With three, any tipping off of the flight path hits at least one of the fins in a way to correct the misalignment. Four works, too. Any more than that and you're just adding drag, which will shorten the flight.
Note well that the key parameter is the area of the fin times the distance it's lift center is behind the mass center of the rocket. That's why something with the fins behind the engine nozzle works so well, because the lift center is behind the entire rocket. Before I knew that rule I built a seriously overpowered rocket with gigantic fins that came all the way up to the nose. Instead of flying with great stability as I expected, it jumped off the launch rod and headed for launch control, then writhed on the ground like a beached whale until the parachute charge went off.
What should the nose cone on a rocket be made out of?
Molded polystyrene is best. Carved and sanded balsa wood is good
Is the battery in an air hogs vectron ultralite replaceable?
The battery is replaceable, but I have not yet found any more information than this: It is a six volt, five cell, one hundred ten Milli-amp hour Nickel Metal Hydride battery. The battery is eighteen thirty-seconds of an inch high, about three-quarters of an inch wide, short ways along the bottom, and one and three-sixteenths inches long, long ways across the bottom. I think the plug is custom made. Even though they (Spinmaster/ AirHogs) discontinued it, try them first.
The battery is located in the central motor core in the center of the Vectron. (charge the battery first before you do anything.)
To get it out, remove the three screws holding the orange lid down.
Next, find the plug on the Vectron core where the charger goes in.
Remove the lid. (it will catch a bit around the switch, but do not worry. Push the lid toward the switch while pulling up gently near or under the switch. It will come up.)
Now find that charge port again.
With that port facing you, there is a thin black rectangle just to the left.
It will have two thick wires coming out of it. Remove this plug by finding the spot where two golden square leads go into it. Put your fingernail there, and slide the plug straight out from the plug horizontally parallel to the charge port.
The battery is now disconnected.
Flip the power on. The red led will flash once if the battery is disconnected.
It will keep blinking if the battery is not disconnected. TURN THAT SWITCH BACK OFF AFTER THIS TEST.
If it is truly disconnected, next take a flat head screwdriver and gently pry up the circuit board from the three white columns where the screws for holding the lid were.
Lift the board. You will see a black piece of foam rubber.
Lift it out and save it. Remember it's orientation. You will need it again.
The battery can now be lifted out. Put in the new one the exact same direction the original was facing.
Now put down the foam square over the new battery.
Put the circuit board back on the white columns.
Plug the power cord from the battery into the circuit board power connector. (RED on the LEFT.)
Angle the lid towards the switch and the charge port, then put it on with it still angled toward the switch and charge port. When the switch and plug are back in the proper lid openings, you can lever it back down over the rest of the board.
Now insert the screws.
YOU DID IT! That wasn't THAT bad now, was it?
What is the definition on fin on a rocket?
The definition of fin on a rocket would be, a thin, protruding piece of metal whose function is to provide aerodynamic stabilization when the rocket is in flight.
How does weather affect the flight of a rocket?
Weather plays a major part of a Model Rocket flight. Winds can force the rocket to curve sideways, known as windcocking. Higher moisture increases the density of the atmosphere, which can slow the rocket down. Temperature also can alter the flight of the rocket by:
1) Cold days - the air is denser, the rocket will be slightly slower, but more stable.
2) Warm/hot days - The air is less dense, the rocket will be slightly faster, but slightly less stable until it reaches a higher speed.
There is plenty of things a model rocketeer can do to adjust to the weather. Tilt the rocket slightly into the wind to compensate for the recovery (winds will drag the rocket when the parachute is deployed), Finding a rocket with a lower Stability Factor to counteract the windcocking effect somewhat (slightly smaller guide fins). As for the temperature, there isn't much you can do to deal with that.
Hot gases from the combustion of the fuel and oxidizer mixture.
What is a good material to glue polycarbonate fins to a rocket?
Super-glue, also called cyanoacrylate or "CA" adhesive. Clear polycarbonate may become foggy (also called "crazed"), though. If you don't want this to happen, check at your local hobby store or on-line retailer for "user-friendly/odorless" ("UFO") CA.
ANS 2 -I build rockets too. I don't find Super glue suitable for fins. I glue mine on with a thin layer of epoxy, then a thin edging after the first layer is dry.
The body may get wrecked, but my fins are always intact -LOL
How do you fly a rocket with a one pound payload?
You would need a very powerful motor for a one pound payload. -At least an 'F' series.
my answer to this young people of scientific resolution is:
times pie squared by 6.33333 and then you times 10000.8888 by 67.9 and you shall get your correct answer i hope this was useful
sincerely Dr Sheldon Cooper :)
What kind of fuel does a glider use?
Gliders by definition.. are gravity driven, towed to operating altitude by a plane and disconnected. Their aerodynamics/ efficiency allows them to use thermal currents and up draft to glide for miles/100+miles. Their main attraction is there is no motor noise, closest thing other than a hang glider(but faster) to being a bird.
What is the function of shock cord on a rocket?
The shock cord keeps the nose cone attached to the main tube.
What are some simple rocket mixtures?
well i often use salt peter or kno3 60% and icing sugar or crushed sugar 40% burns verry well and is a solid state :)
hope it helps
What does Burn Time for a rocket mean?
The length of time from ignition of propellant to when all propellant has been consumed.
How do you choose the right fin sizes for model rocket?
You do this through experimenting with your rockets. Larger fins make their flight more stable, but slow them down a little. Very small fins make them fast, but often too unstable so they spin and corkscrew. So you aim for something in between, that suits your rocket and the motor.
How high can model rockets go?
Once it has managed to escape the Earths gravitational pull and then the suns gravitational pull, a space craft will have enough speed to carry on indefinitely, so long as it does not collide with anything. If it has enough fuel and thrust to get up to this escape speed, then it wont stop, since there will be no forces to slow it down in space, even once the engines have stopped.
