Team Delta Special Recon OpsLaunch Readiness Review

Taylor Boe

Andrew Gilbert

Bobby Stillwell

Emily Howard

Grace Harsha

Andrew Buckner

November 11, 2008

Mission OverviewThe primary mission of Operation H.A.L.O. is to find the optimal

altitude at which one can take quality telescopic images of

celestial bodies from a high altitude observatory. By taking light

readings of ambient light intensity at all wavelengths at various

altitudes up to 30,000 meters using a photometer, and comparing

this to past data, we shall achieve an understanding of where

ambient light remains constant above our stratosphere, no longer

interfering with telescopic imagery. This shall aid future missions

in attempting to obtain quality images of celestial bodies at a

lower cost compared to current ground based or orbiting

telescopes.

Design Overview

20 cm

20 cm

Camera

HOBO

Heater Batteries

Heater

Flight tube

Circuit

BASIC Stamp

Baffling tube

BASIC Stamp Serial to Computer

Power Supply

Photo resistor (to be mounted at bottom of baffling tube)Photo resistor Circuit

Science Experiment Test Results

Raw Data Light Intensity Data

Time

Why is the data raw?

When the BASIC stamp records values for the intensity of light, the less light present, higher values are recorded; the brighter the light is, lower values are recorded. So, the raw data needs to be inverted to represent an accurate trend in light intensity.

Converted Light Intensity Data

Time

Test Results:Drop Test, Whip Test, Cold Test

The structural tests were completely successful.

The structure withstood the stair test, and multiple drops of over twenty-five feet.

The whip test failed to hinder the structural integrity of our satellite. It was a success.

The data from the HOBO cold test shows a distinct difference in the internal vs. external temperatures. This indicates that our heater is functional.

Temperature Plots

Degrees Celsius

Time Internal External

Internal Relative Humidity Data Test

Time

RH (%)

This test indicates that the relative humidity decreased slightly inside our structure during the cold test. This is most likely due to the moisture absorbing packets inside.

Predictions

• Light intensity will fluctuate throughout the ascent due to atmospheric distortion and the orientation of the sun.

• Light intensity will be more intense at the maximum altitude.

• The sub-zero temperature may affect the performance of the batteries and camera, even though cold tests were promising.

Biggest Worries

• The functionality of our circuit and data storage• Retrieving valuable data post-flight• Our thermal design successfully withstanding

the extreme negative temperatures of near space

Requirements and ComplianceRequirement Compliance

Mass (under 1000 g) Total mass: 983 g

Price budget ($150) Total cost: 108.25 dollars

American flag and contact information visible outside of structure

This is secured to the outside of our structure

Camera onboard Secured inside and functioning

Temperature data (internal and external)

The HOBO will take internal and external temperature and has been tested.

No one shall get hurt Carful cutting and caution when soldering