Weight of Everything

Reflector - 261 grams
Parachute - 140.5 grams
Styrofoam Box - 306.6 grams
GPS Phone - 99.4 grams
Camera 1 - 128.5 grams
Camera 2 - 84.8 grams
2 Hand Warmers - 34 grams

Total (in grams) - 1,054.8 grams
Total (in pounds) - 2.3 pounds

How to Fill Up and Tie Off the Balloon

This is an instructional video on how to fill up, tie off, and attach the weather balloon to the parachute. Please watch it.
http://www.youtube.com/watch?v=JiWyBXtLE5A

5 day forecast from May 17 to May 21

If we were to launch this balloon in 5 days here is the predicted forecast

Today May 17

69^°F

41^°F

Sunny

Chance of rain:

0%

Wind:

NNW at 12 mph

Fri May 18

70^°

43^°

Mostly Sunny

Chance of rain:

0%

Wind:

E at 5 mph

Sat May 19

77^°

50^°

Mostly Sunny

Chance of rain:

0%

Wind:

ESE at 4 mph

Sun May 20

77^°

56^°

Sunny

Chance of rain:

0%

Wind:

ESE at 6 mph

Mon May 21

67^°

57^°

Few Showers

Chance of rain:

30%

Wind:

E at 7 mph

Designing the Payload

Camera on the short side of the box and the phone on the other side to counter the wait of the phone so it is even on both sides.

Questions for Balloon Trajectory

Right now, we are estimating that the balloon + payload is going to land somewhere in north Massachusetts. Initially we were going to use the website http://weather.uwyo.edu/polar/balloon_traj.html to predict this trajectory, but recently we have found that http://habhub.org/predict will be much more precise. But in order for us to get this good estimate, we need to answer a couple of questions:
1. What is our ascent rate expected to be?
2. What is our burst altitude expected to be?
3. What is our descent rate expected to be?
Once we have these questions answered, we can get a great prediction on habhub and then work it into our papers.

-Mr. Malburg and Mr. Goldstein

Cordinates for Litchfield

41.7472° N, 73.1892° W

Hussein and Eduardo

New Job Description: Determining the best way to attach the parachute to the styrofoam box.

Procedure: Hussein and Eduardo will experiment with different materials to determine how to attach these two pieces. They will give feedback to group with design details before construction begins.