Wednesday, March 28, 2007

11 NAR Rocketry Safety Rules

1. Materials: I will use only lightweight, non-metal parts for the nose, body, and fins of my rocket.

2. Motors: I will use only certified, commercially-made model rocket motors, and will not tamper with these motors or use them for any purposes except those recommended by the manufacture.

3. Ignition System: I will launch my rockets with an electrical launch system and electrical motor igniters.

4. Launch Safety: I will use a countdown before launch, and will insure that everyone is paying attention and is a safe distance of at least 15 feet away when I launch rockets with D motors or smaller, and 30 feet away when I launch larger rockets.

5. Misfires: If my rocket does not launch when I press the button of my electrical launch system, I will remove the launcher's safety interlock or disconnect its battery before allowing anyone to approach the rocket.

6. Launcher: I will launch my rockets from a launch rod, tower, or rail to insure that the rocket flies nearly strait up. I will use a blast deflector to prevent the motor's exhaust from hitting the ground, and I will cap the end of my launch rod when it is not in use.

7. Size: If my model rocket weighs more than one pound (453 grams) at liftoff or has more power than a single G motor, I will check and comply with Federal Aviation Administration regulations before flying.

8. Flight Safety: I will not launch my rocket at targets or near airplanes, and will not put any flammable or explosive payload in my rocket.

9. Launch Site: I will launch my rocket outdoors, and in an open area and in safe weather conditions (*LITTLE OR NO WIND) and will ensure that there is no dry grass close to the launch pad (*OR IN THE FLYING FIELD).

10. Recovery System: I will use a recovery system such ad a streamer or parachute in my rocket so that it returns safely and undamaged and can be flown again, and I will use only flame-resistant or fireproof recovery system wadding in my rocket.

11. Recovery Safety: I will not attempt to recover my rocket from power lines, tall trees, or other dangerous places.

Tuesday, March 27, 2007

Math Problem 3

You would need 800,000,000 lbs of fuel to lift 400,000 lbs of payload into space.

Monday, March 26, 2007

Math Problem 2

150 Statued Miles=1.3 Nautical Miles

Math problem 1

35.5 Statued Miles=.30 Nautical Miles

Airfoil

The definition of airfoil is fairly simple. It is somthing that is designed to or does cut through the air (ex. a wing).

Attitude Gyro

The attitude gyro is a gage that tells you if you are banking or going up or down. Some people call it the "Artificial horizon." But it is basically a ball on gimbals.

True and Magnetic North

The way compassass work is by a needle spinning around the earth's magnetic feild. But the magnetic feild is off and so true north is actually a little off of magnetic north. Thats the difference between magnetic and true north.