progress report

Today for our final we chose to do the magazine.  In this we all insert an article about a topic.  My topic was the problems that we have encountered along the way (which is alot to write about).  As for our rocket, we finished making the third one.  In our group we discussed how our rocket was related to newtons laws.  Like how, when the water exerts force on the ground, the ground pushes back with equal force.  Also how the bottle wont go anywhere unless we pressurize it.  Lastly is the law of interia and that and object wants to keep moving in one direction.

after our launches on thursday and friday our nose cone was dented severely so we made another rocket.  We think that our success is because of the fins.  This is because they are very sturdy and made of tin.   I don't think we will launch another until the final contest because we don't want the cone to be destroyed.

                                                       

Today we launched for the first time.  We had our doubts but we were nicely surprised by our results.  First we found the angle of the rocket which was 80 DEGREES!  Then we did the equation 50*tan(80).  Our final result was 243.3 meters or 850 feet!  we may have done the calls wrong but it still looked like it went very high.

This is our final blueprint.

Torp holding our rocket.

Our finished rocket

Today we finished our second rocket.  It really looks good with our new fins.  We added the fins in the perfect location.  We have 3 fins which, based on our simulator did better than 4 fins.  We where able to place the fins in the ideal location by meausuring the curcumferance with a string, then we divided that by 3 and hot glued the fins on.  For the material we used metal from my house.

Design & Construction

The first rocket we made was a failure so we had to start over. But anyways here is how we construed our second rocket The first step in making our rocket was pressurizing our smart water bottle. Then we made a parabolic at the top of the bottle by using clay. Then we put duck tape over the clay at the top to make it smooth and to stay. Then we calculated the circumference and divided that by three then we knew how far apart the 3 fins should be. Then we placed the 3 fins in their proper spots. And after we did that we were done and ready to launch our rocket. 

 

Research Summary Day 1

	WaterRocketSim Prototype	Glenn Research Center
DATA SHEET
Flight One Flight Two Body: Payload Height (cm): ___0______ Nozzle Radius (cm): ___1.031______ Fairing: Yes Fairing radius (cm): ___0.074 oz/in3__ Nose Cone: Shape: ______conical_____ Material: __solid plastic_________ Propulsion: Water (liters): __8.0___ Pressure (KPa): __37.7___ Fin Design: Fin Height: _1.5____ Fin Shape: ___elliptical __ Number of Fins: __3___ Fin Dimensions: l.e angle is 45 and T.E. angle is 30 degrees   Body: Payload Height (cm): ____0_____ Nozzle Radius (cm): ___1.031______ Fairing: Yes Fairing radius (cm): _____0.074 oz/in3 Nose Cone: Shape: ____conical_______ Material: ___solid plastic________ Propulsion: Water (liters): __8.0___ Pressure (KPa): _37.7____ Fin Design: Fin Height: __1.5___ Fin Shape: _trapezoidal ____ Number of Fins: ___3__ Fin Dimensions: L.e angle is 45 and T.E. angle is 30 degrees   Launch Stats: Max Altitude (m): _71 ____ Max Velocity (m/s): __16___ Launch Stats: Max Altitude (m): _72____ Max Velocity (m/s): ___17__

rocketmaster

dom i was thinking of using some wood for the fins. should i use that or the metal that i brought in today?          

test

hey dom its torp. building rockets is hard.   DERP 1