0
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
Does the rockets shape affect it's flight?
The smaller it's maximum cross-sectional area in the direction of flight, the faster it goes, as this reduces wind resistance..
How does streamlining affect the flight of a rocket?
Incredibly ! -In rocket flight streamlining is the single most important factor.
What difference does it make to where the fins are located?
because if thay are in the wrong place the rocket will not be stable
Why should you use rubbing alcohol on your daughter's swollen ankle?
I can not think of any reason you would want to do that? RICE is the key... Rest, Ice, Compress i.e ace wrap, Elevate.
What is the difference between model rockets and real rockets?
In a real rocket, there is short a time in atmosphere and the aerodynamics are less important. In a model rocket, all flight in the atmosphere and the aerodynamics are very important. In a real rocket, it has a liquid or solid rocket engine and a large propellant mass fraction. In a model rocket, it has a solid rocket engine and a small propellant mass fraction . In a real rocket, there are four forces during atmospheric flight. In a model rocket, there are four forces throughout flight. In a real rocket, there is a long powered flight . In a model rocket, it has a very short powered flight . In a real rocket, it has passive stability and active control . In a model rocket, it has passive stability and no control. In a real rocket, it has expensive materials such as aluminum, titanium, and nickel alloy. In a model rocket, it has inexpensive materials such as balsa, cardboard, and plastic. In a real model, there is a high speed and the heating is very important. In a model rocket there is low speed and the heating is not important.
Which engine is stronger B6-4 or C6-3?
The C6 -3 is twice as strong as the B6-4 but runs for a shorter time. It will propel a bigger rocket. I use C6 on rockets about 30-33 inches long, 1 inch diam.
How do you make a rocket model?
Normally model rockets are made from kits you buy at a hobby store. The most famous maker of model rocket kits is a company named Estes. Visit links below.
The other option is to build it from scratch. One great way to build from scratch is to purchase the Designer's Special from Estes. It contains an assortment of body tubes, nose cones, and centering rings. Just make sure to use an 18mm. diameter tube for the engine (usually will need to be 2.5in long) and that the Center of Gravity of the Rocket is at least one body diameter ahead of the Center of Pressure and you'll be fine. You can find the Center of Gravity by balancing the rocket with everything in it, and you can find the Center of Pressure of the rocket by balancing a cardboard silhouette of your rocket, or you can find both before you build the rocket by using a simulator like Rocket Modeler II (http://www.grc.nasa.gov/WWW/k-12/rocket/rktsim.html) or RockSim (http://www.apogeerockets.com/rocksim.asp).
What kind of fuel do they use in rockets?
Primarily there are two types of fuels used in most rockets today. The space shuttle, at liftoff, uses both. Solid fuel and liquid fuel. Solid fuel rockets are much like the bottle rockets you can buy in a fireworks store. Once they are lit, the burn all of the fuel available and then burn out. The 2 white rockets on the side of the orange tank holding the space shuttle are Solid Rocket Boosters. The large orange tank that holds the space shuttle is full of liquid full that the shuttle uses as it lifts off into space. That fuel is actually liquid.
What materials should you use to make a nose cone?
You would need 6 to 7 construction papers to make a nose cone on a bottle rocket. You would also probably need scissors and a ruler for measurement. You would also need tape for taping on the construction paper. Then just shape the construction papers into a cone and tape it on the bottle rocket.
In dry air, 20 °C (68 °F), or 343 meters per second to be excact.
Is it normal to have a lump around the outside and inside of your nose piercing?
It sounds like you have an infection. Soak a chamomile tea bag in hot water and then place it on the lump for 10 to 15 mintues. Do this for about 2-4 days and the lump should go straight away. If this does not work, contact a body piecer for advice.
Take an empty film canister and fill it with baking soda and vinegar. make sure to be quick with putting the lid back on it. once lid is on flip it over and stand back.
How do rocket parts affect flight?
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.
