1) All of our rockets lifted off at some point, and none of them are now not flyable.
2) Some of them failed in the beginning because we didn't wire them properly.
Thursday, March 29, 2007
Tuesday, March 27, 2007
3/27/07
1) 800,000,000
2) Model Rocket Safety Code
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 manufacturer.
3. Ignition System. I will launch my rockets with an electrical launch system and electrical motor igniters. My launch system will have a safety interlock in series with the launch switch, and will use a launch switch that returns to the "off" position when released.
4. 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, and will wait 60 seconds after the last launch attempt before allowing anyone to approach the rocket.
5. Launch Safety. I will use a countdown before launch, and will ensure 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 when I launch larger rockets. If I am uncertain about the safety or stability of an untested rocket, I will check the stability before flight and will fly it only after warning spectators and clearing them away to a safe distance.
6. Launcher. I will launch my rocket from a launch rod, tower, or rail that is pointed to within 30 degrees of the vertical to ensure that the rocket flies nearly straight up, and I will use a blast deflector to prevent the motor's exhaust from hitting the ground. To prevent accidental eye injury, I will place launchers so that the end of the launch rod is above eye level or will cap the end of the rod when it is not in use.
7. Size. My model rocket will not weigh more than 1,500 grams (53 ounces) at liftoff and will not contain more than 125 grams (4.4 ounces) of propellant or 320 N-sec (71.9 pound-seconds) of total impulse. If my model rocket weighs more than one pound (453 grams) at liftoff or has more than four ounces (113 grams) of propellant, I will check and comply with Federal Aviation Administration regulations before flying.
8. Flight Safety. I will not launch my rocket at targets, into clouds, or near airplanes, and will not put any flammable or explosive payload in my rocket.
9. Launch Site. I will launch my rocket outdoors, in an open area at least as large as shown in the accompanying table, and in safe weather conditions with wind speeds no greater than 20 miles per hour. I will ensure that there is no dry grass close to the launch pad, and that the launch site does not present risk of grass fires.
10. Recovery System. I will use a recovery system such as 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.
2) Model Rocket Safety Code
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 manufacturer.
3. Ignition System. I will launch my rockets with an electrical launch system and electrical motor igniters. My launch system will have a safety interlock in series with the launch switch, and will use a launch switch that returns to the "off" position when released.
4. 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, and will wait 60 seconds after the last launch attempt before allowing anyone to approach the rocket.
5. Launch Safety. I will use a countdown before launch, and will ensure 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 when I launch larger rockets. If I am uncertain about the safety or stability of an untested rocket, I will check the stability before flight and will fly it only after warning spectators and clearing them away to a safe distance.
6. Launcher. I will launch my rocket from a launch rod, tower, or rail that is pointed to within 30 degrees of the vertical to ensure that the rocket flies nearly straight up, and I will use a blast deflector to prevent the motor's exhaust from hitting the ground. To prevent accidental eye injury, I will place launchers so that the end of the launch rod is above eye level or will cap the end of the rod when it is not in use.
7. Size. My model rocket will not weigh more than 1,500 grams (53 ounces) at liftoff and will not contain more than 125 grams (4.4 ounces) of propellant or 320 N-sec (71.9 pound-seconds) of total impulse. If my model rocket weighs more than one pound (453 grams) at liftoff or has more than four ounces (113 grams) of propellant, I will check and comply with Federal Aviation Administration regulations before flying.
8. Flight Safety. I will not launch my rocket at targets, into clouds, or near airplanes, and will not put any flammable or explosive payload in my rocket.
9. Launch Site. I will launch my rocket outdoors, in an open area at least as large as shown in the accompanying table, and in safe weather conditions with wind speeds no greater than 20 miles per hour. I will ensure that there is no dry grass close to the launch pad, and that the launch site does not present risk of grass fires.
10. Recovery System. I will use a recovery system such as 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.
Monday, March 26, 2007
1) The difference between true and magnetic north is that true north is based on the north pole and magnetic north is based on the magnetic poles.
2) The Attitude Gyro is to show whether you are going straight or what angle of bank you are on.
3) Airfoil- A shape designed to cut through the air.
4) 30.86
5) 130.34
2) The Attitude Gyro is to show whether you are going straight or what angle of bank you are on.
3) Airfoil- A shape designed to cut through the air.
4) 30.86
5) 130.34
Sunday, March 25, 2007
3/23/07
1) I think that this has been a very productive week and that this is a very good intersession. One of my favorite things that we did was when we made those foam flyer's and then made modifications to them. I liked that because it was a good way to show that modifications aren't always a good thing. One thing i didn't like about this week was we didn't spend that much time on the planes that we cut out from the blueprints. I think that if we spent more time on that i could have made mine better. One thing i learned this week was that Bernoulli's theory of lift isn't the only one, there is the Newtonian theory which also can achieve lift. If i could change one thing about last week it would be that we could spend more time on the tours of the museum because i got a lot of information from them.
Thursday, March 22, 2007
3/22/07
1) Occam's Razor- Whenever one can remove the impossible, what remains, however unlikely, (leads to) the truth. People use Occam's Razor every day; some examples of this are when you have a multiple choice quiz, or when you can't remember what off ramp to get on while your driving.
2) Ruben H. Fleet is important because he was on the inaugural load of U.S. Air Mail from New York to Washington.
3) Datum is your last known position or where you start your search. The symbol looks like an hour glass.
4) The "Red Baron's" plane was red because he wanted to look intimidating and to draw attention.
2) Ruben H. Fleet is important because he was on the inaugural load of U.S. Air Mail from New York to Washington.
3) Datum is your last known position or where you start your search. The symbol looks like an hour glass.
4) The "Red Baron's" plane was red because he wanted to look intimidating and to draw attention.
Wednesday, March 21, 2007
3/21/07
1) The Bernoulli effect says that the faster air moves the lower the air pressure. And when a wind cuts through air the wind on the top moves faster that the air on the bottom causing the air under the wing to create lift. The Newton Theory believes that the wing of the airplane skips along the air.
2)
Yaw- an angle, to the right or left, determined by the direction of motion of an aircraft or spacecraft and its vertical and longitudinal plane of symmetry.
Pitch- to deviate from a stable flight attitude by oscillations of the longitudinal axis in a vertical plane about the center of gravity.
Roll- Aviation. to deviate from a stable flight attitude by rotation about its longitudinal axis.
Dihedral- the angle at which the right and left wings or the halves of any other horizontal surface of an airplane or the like are inclined upward or downward.
Static- not active, or not going to chance.
Dynamic- of or pertaining to force or power.
Aerodynamic- the branch of mechanics that deals with the motion of air and other gases and with the effects of such motion on bodies in the medium.
2)
Yaw- an angle, to the right or left, determined by the direction of motion of an aircraft or spacecraft and its vertical and longitudinal plane of symmetry.
Pitch- to deviate from a stable flight attitude by oscillations of the longitudinal axis in a vertical plane about the center of gravity.
Roll- Aviation. to deviate from a stable flight attitude by rotation about its longitudinal axis.
Dihedral- the angle at which the right and left wings or the halves of any other horizontal surface of an airplane or the like are inclined upward or downward.
Static- not active, or not going to chance.
Dynamic- of or pertaining to force or power.
Aerodynamic- the branch of mechanics that deals with the motion of air and other gases and with the effects of such motion on bodies in the medium.
Tuesday, March 20, 2007
3/20/07
1) The thing that i did to modify my airplane was i added two wings to the first one, making it a triplane. I also cut my vertical and horizontal stabilizers to make them more aerodynamic. The outcome of this was that on the launch with the ruler my distance decreased, but that was because when you launch the triplane you need more force than what was given with the ruler and rubber band.
2)
Observation- When you through the original plane it goes a pretty far distance.
Question- I wonder if i made modifications to my plane, if it would fly farther or faster?
Hypothesis- If i modify my plane, then it will fly farther.
Experiment- I flew my newly modified triplane with aerodynamic stabilizers and it hit the ground right away.
Conclusion- The modifications aren't always good, but in this case the problem was that the launcher didn't provide enough force.
2)
Observation- When you through the original plane it goes a pretty far distance.
Question- I wonder if i made modifications to my plane, if it would fly farther or faster?
Hypothesis- If i modify my plane, then it will fly farther.
Experiment- I flew my newly modified triplane with aerodynamic stabilizers and it hit the ground right away.
Conclusion- The modifications aren't always good, but in this case the problem was that the launcher didn't provide enough force.
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