Our first and best turbine.
Mass: 64.37
Height: 20in.
Energy: 4.006 W
Power: 9.8 M/S
1. Our turbine the only really one that worked was made out of a blue manilla folder.
2. The winner had
plastic rulers that they melted to fold in so they could catch the wind, and
others just werent as strong but they attempted to fold the insides
in.
3. Our best attemp was 9, but it only raised halfway.
4. Create a unbalanced wing so that there is more pressure
underneath than on top
5. It would catch the air using bernoullis principle.
6. Both had a bend in them to catch the air causing them to turn.
Sunday, May 6, 2012
Wind Turbine Questions
Which rotor had the most power and why...?
Our second design had the most power, we used syrafoam cups and dowel rods and it was really light. where our other design was made out of really thick plastic and was WAY to heavy to have the wind move it without a lot of force.
What was different about the design of the windmill that did the best...?
The windmill that did the best was horizontal where ours was vertical, its blades were very long and made out of a somewhat light material. Where our cups were short and stubby.
What are the limitations to your model...?
the cups were too small at first to catch enough wind to move, so we had to modifiy them to catch more wind. So we taped foam board to the sides of them to make them wider and catch more wind and it worked really well. it was a good solution to our problem.
How do an airplane and windmill use air pressure to fly and rotate...?
Both of them use Bernolli's Principle where if the wind is not blowing in the same direction with force then nothing will rotate and create energy. Because if the blades are not facing the same direction then the wind will just blow inbetween the blades, and not past them causing them to turn. like with a windmill and an airplanes motor.
Thursday, May 3, 2012
Mass- 64.37
Height- 20in.
Energy- 4.006 W
Power- 9.8 M/S
1. Our blue turbine made out ofthick blue folder paper was stronger than are thin cardboard box paper because it wasnt flimsy.
2. The winner had plastic rulers that they melted to fold in so they could catch the wind, and others just werent as strong but they attempted to fold the insides in.
3. We fit 6 washers on are turbine but it took it awhile to roll up.
4. create a unbalanced wing so that there is more pressure underneath than on top
5. It caught air to make it move
6. Because they both have that bend in them to catch air to make it move
Height- 20in.
Energy- 4.006 W
Power- 9.8 M/S
1. Our blue turbine made out ofthick blue folder paper was stronger than are thin cardboard box paper because it wasnt flimsy.
2. The winner had plastic rulers that they melted to fold in so they could catch the wind, and others just werent as strong but they attempted to fold the insides in.
3. We fit 6 washers on are turbine but it took it awhile to roll up.
4. create a unbalanced wing so that there is more pressure underneath than on top
5. It caught air to make it move
6. Because they both have that bend in them to catch air to make it move
Wednesday, April 18, 2012
Small Turbine Large Turbine
First Washer: First Washer:
Power- 2.8 Watts Power- 2.0 Watts
Energy- 84.1 (On Low) Energy- 84.1 (On Medium)
Second Washer: Second Washer:
Power- 7.6 Watts Power- 4.0 Watts
Energy- 145.6 (On Medium) Energy- 145.6 (On High)
Third Washer:
Power- 9.6 Watts
Energy- 216.0
Fourth Washer:
Power- 12.1 Watts
Energy- 265.9
Questions
1. The rotor that had the most power was our first smaller rotor, with smaller blades. The reason why it had the most power opposed to our second one was because our second rotor had blades that weren't designed as stable our strong as our first rotor.
2. The maximum output for our first rotor was four washers. The maximum output for our second rotor was two washers. Lastly, the maximum output for the best made rotor in the class never reached an actual maxout, because they built there rotor well, and also just didn't get enough time to maxout.
3. The supplies that were limited to the making our rotor were the two five star front covers to notebooks that we used in the process.
4. An airplane and a windmill use air pressure to rotate and fly, because top of the wings are curved making more surface area for the air to cover in the same time as the bottom of the wing. Because of this difference the top experiences less pressure causing lift.
5. It is necessary to twist the blades of a rotor to an angle because it will help increase speed and the amount generated power of the rotor.
6. The rotors of a windmill or turbine and the sail of a sail boat illistrate the same principle because the principle of lift, which is speed help both of these things with the power of there objects. Because as speed and pressure hit a sail boat or rotors on a windmill that determines how much power will be generated from the gust of pressure and speed.
First Washer: First Washer:
Power- 2.8 Watts Power- 2.0 Watts
Energy- 84.1 (On Low) Energy- 84.1 (On Medium)
Second Washer: Second Washer:
Power- 7.6 Watts Power- 4.0 Watts
Energy- 145.6 (On Medium) Energy- 145.6 (On High)
Third Washer:
Power- 9.6 Watts
Energy- 216.0
Fourth Washer:
Power- 12.1 Watts
Energy- 265.9
Questions
1. The rotor that had the most power was our first smaller rotor, with smaller blades. The reason why it had the most power opposed to our second one was because our second rotor had blades that weren't designed as stable our strong as our first rotor.
2. The maximum output for our first rotor was four washers. The maximum output for our second rotor was two washers. Lastly, the maximum output for the best made rotor in the class never reached an actual maxout, because they built there rotor well, and also just didn't get enough time to maxout.
3. The supplies that were limited to the making our rotor were the two five star front covers to notebooks that we used in the process.
4. An airplane and a windmill use air pressure to rotate and fly, because top of the wings are curved making more surface area for the air to cover in the same time as the bottom of the wing. Because of this difference the top experiences less pressure causing lift.
5. It is necessary to twist the blades of a rotor to an angle because it will help increase speed and the amount generated power of the rotor.
6. The rotors of a windmill or turbine and the sail of a sail boat illistrate the same principle because the principle of lift, which is speed help both of these things with the power of there objects. Because as speed and pressure hit a sail boat or rotors on a windmill that determines how much power will be generated from the gust of pressure and speed.
Tuesday, April 17, 2012
This is a test
Do I Remember how to make a table in HTML??
Yup.
Also feel free to use this table, when you copy and paste it, go into html,then edit Row 1, cell 1 to whatever you had, it should show up, if you need more rows FIGURE IT OUT. also, im not a nerd for knowing this, i just know something you dont.
| row 1, cell 1 | row 1, cell 2 | row 1, cell 3 | row 1, cell 4 |
| row 2, cell 1 | row 2, cell 2 | row 2, cell 3 | row 2, cell 4 |
Wind Turbine
The rotor with the most power was my first turbine because the material was less flimsy and the blades kept their twisted shape more than the second turbine's.
The windmill with the maximum output was different than mine because theirs had long and skinny blades when mine had short and wide blades.
One limitation of my best turbine was that one blade kept untwisting making some spins inconsistant because the spinning would slow down everytime the wind hit that blade. Another limitation was the tinfoil over the fivestar notebook material was a little bumby causing more friction which slowed down the turbine.
Airplanes and windmills use airpressure to fly and rotate because of Bernalli's Principle. The high pressure wants to move to move to the blades/wings which helps the blades spin or give the airplane lift.
It was necessary to twist the rotor blades at an angle because it gave a place for the air to slide off the blades and escape after hitting the blades. It also helps the blades catch the wind and keep them spinning.
The rotors on a windmill and the sails on a sailboat illustrate the same principle because the blades on a windmill are curved to help catch the wind and move in a specific direction. Sailboat sails use the same principle becasue the sails are curved and once the sails catch the wind the boat moves in a specific direction.
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