Final Project

The Final project will be handed in on Friday (Tomorrow). This is because there is no way that I know of to upload a publisher file to Blogger. As a safety net in case I forget to hand it in, I will have BOTH PARTS (there are two files to it) on student shared. Cheney>Danny W> (Rockets part 1 and Rockets part 2).
-Danny W and Jordan T
posted by Danny

Research Summary Day 1

Danny Whitford Rocket Simulator Data Sheet

·         N/A is used if the variable cannot change in our rocket launches.

Flight 1:

Body:

Payload Height- 0

Nozzle Radius (cm)- N/A

Fairing?- Yes

Fairing Radius (cm)- 1.27

Nose Cone:

Shape- Elliptic

Material-Solid Balsa

Propulsion:

Water (Liters)- 20.729

Pressure (KPa)- 192.613

Fin Design:

Fin Height- ?

Fin Shape- Trapezoidial

Number of Fins- 3

Fin Dimensions- 12.7*12.7 (length and width)

Launch Stats:

Max Altitude (m)- 8

Max Velocity (m/s)- 13

Flight 2:

Body:

Payload Height- 3.81

Nozzle Radius (cm)- N/A

Fairing?- Yes

Fairing Radius (cm)- 1.27

Nose Cone:

Shape- Elliptic

Material- Solid Balsa

Propulsion:

Water (Liters)- 20.729

Pressure (KPa)- 192.613

Fin Design:

Fin Height- ?

Fin Shape- Trapezoidial

Number of Fins- 3

Fin Dimensions-12.7*12.7 (length and width)

Launch Stats:

Max Altitude (m)- 8

Max Velocity (m/s)- 12

Flight 3:

Body:

Payload Height-0

Nozzle Radius (cm)-N/A

Fairing? Yes

Fairing Radius (cm)-

Nose Cone:

Shape- Elliptic

Material- Hollow Plastic

Propulsion:

Water (Liters)- 20.729

Pressure (KPa)- 192.613

Fin Design:

Fin Height-?

Fin Shape- Trapezoidial

Number of Fins- 3

Fin Dimensions-12.635*12.635

Launch Stats:

Max Altitude (m)-12

Max Velocity (m/s)-17

Flight 4:

Body:

Payload Height-0

Nozzle Radius (cm)-N/A

Fairing? Yes

Fairing Radius (cm)- 1.27

Nose Cone:

Shape- Elliptic

Material- Hollow Cardboard

Propulsion:

Water (Liters)- 20.729

Pressure (KPa)- 192.613

Fin Design:

Fin Height-?

Fin Shape-Trapezoidial

Number of Fins- 3

Fin Dimensions-12.635*12.635

Launch Stats:

Max Altitude (m)-13

Max Velocity (m/s)-19

In the simulations above, I only changed one variable at a time. Using my information, I can conclude that...

a.) Having a longer payload height slightly increases the velocity of the rocket and *slightly* increases distance.

b.) It is much better to have a cardboard cone than a plastic cone because the cardboard cone out-did the plastic cone greatly in velocity AND distance.

Design and Construction/Blueprint

Today we accomplished many things. We have almost all of our rocket(s) completed and are finished in the design process. Our construction is completed up to the point of adding the fins. This means we duct taped our entire rocket and measured/superglued our fins on and that all we have left to do is our nozecone. Our design blueprint is completed. Because of scanning issues (no availible scanner because my scanning light is out), our blueprint cannot be posted on the blog, but it will be shown to Mrs. Cheney during class on Wednesday. I guess all that is left is to test the simulator for more ideas. RICK-EMMER-ROCKETS will win!

Starting Up

Tomorrow is the building day so we need to know what we are doing for the rocket. This post is so we can comment back and forth on what we found was best for each part and why it is the best. During my research in class today, most sources say that a water to air ratio of 1/3 is USUALLY the best, but it depends on how pressurised the air is and the weight of the rocket. Also, we want the cone to have a bit of weight in it for stability. We need more ideas on what would be the best and suggestions for all the other parts (such as if it's a 2L, 1.5L, or 1L). I think that the 1L bottle would work the best simply because it has "the best of both worlds". It is like a dialated version of the 1L, so it is aerodynamic, but also holds more pressurised air like the 2L. We need to comment and exchange ideas.