The SpiderJosh Elmhorst, David ZuehlkeDaniel Llewellyn, Jiwon KimAdam Offord, Jacob Darnell

Raul Yazdani, James Daugherty Andrew Walston

Introduction

Our main goal was to go higher than 90,000 feet and to be faster than the other balloons.

We accomplished all of our goals.

We achieved a height of 102,741

Cont…

Our three design objectives are organized in this order:

1) Height

2) Reliability

3) Data Quality

Goals for the Dynamics Team

Choose a balloon that can carry the package payload (about 1200 g).

●Calculate an ascent rate and gas fill volume.●Choose a parachute for the descent.

Balloon and ascent rate●Balloon Choice : 800 gram

→Package payload is roughly 1.2 kg.●Ascent rate : 5.6 m/s.

Gas fill volume

●Gas fill volume : 3.44 m3

Parachute

Parachute: 48-inch pilot parachute

(1) The descent rate is approximately 4.48 m/s

(2) The descent time will be about 75 min.

Survivability▪ Materials Used

▪ Styrofoam box.▪ Eggcrate mattress topper foam padding.▪ Dog leash clip for parachute and balloon attachment.▪ Hand warmers

Styrofoam Box▪ Lightweight▪ Waterproof▪ Cushions impact▪ Easy to shape/carve

Foam Padding▪ Lightweight▪ Bends into any shape▪ Floats on water▪ Absorbs impacts

Dog Leash Clip▪ 360 degree free spin▪ Ease of use▪ Allows for more stable video footage

ElectronicsGoals Estimate the amount of time the camera and GPS will need to run for and

make sure the batteries will keep them running that long.

Estimate the temperature the electronics will face and make sure they can handle those extremes.

Take good pictures of the curvature of the earth.

Camera: GoPro Hero2

GPS: Micro-Trak RTG FA

Batteries: 10 Ultimate Lithium Batteries

Batteries

Energizer Ultimate Lithium AA 20 Batteries L91

-Reliability

-Lightweight

-Long lasting

GoProFor our camera we chose the GoPro hero 2

-Lightweight

-Durable

-Battery life

-Picture quality

Micro-Trak RTG FA-Provided

-8 Ultimate Lithium Batteries

-Connection

-Lightweight

Mission Control

David Zuehlke and Andrew Walston

Tracking method:

http://aprs.fi -google earth based tracking website

Tiny Trac 3

Habub mobile app

Telescope on top of parking garage

Launch site

The BJU Athletic fields

Team organization for launch day

Two main groups:

1. The Retrieval team

2. The Assembly/Launch team

Predicted Launch Trajectory

Trajectory from November 9

11:00 am

Actual Launch Trajectory

0.00 20.00 40.00 60.00 80.00 100.00 120.00 140.00 160.000

5000

10000

15000

20000

25000

30000

35000 KD7MS-12 Launch dataKD7MS-12 Altitude

Time after Launch (min)

Altit

ude

(m)

Conclusion

Light weight for ease of lift

Large balloon for fast assent

Durable equipment to handle the high speeds

Team Verse

1 Corinthians 9:24:“Do you not know that in a race all the runners run, but only one receives the prize? So run that you may obtain it.”