Project 250 High Altitude Challenge Lane Ellefson, Andy Guymon, Claire Martin, Brandon Trainer, Cate Whiting, Madison Wieczorek

CONCEPT Project 250 is a lightweight, efficient payload for a HAB The goal is to achieve an altitude of 125 thousand feet. Our team is attempting to create the lightest payload possible, while meeting all requirements. The goal is to have an extremely lightweight initial design, to save weight for a good camera.

Objectives Adhere to all laws and comply with FCC/FAA regulations Be tracked with APRS throughout the flight Include multiple ways of locating the payload on ground Return photographic evidence of the entire flight Measure inner/outer temperature and pressure Survive 10-g omni-directional accelerations Be reusable Measure acceleration (3 axis) Have mass < 250g including parachute/lines Minimize instabilities System should return a live picture* Payload must meet criteria for space launch* System must be self-powered* *future constraints (not required to be met this year)

Regulations and Launch Communicable by APRS Notification of FCC/FAA Early morning launch time Landed before nightfall Helium can be acquired through donation or bought

Design Specifications Approx 2 cm thick Enough to have durability with insulation, while still being lightweight Oblong shape Flat base Components will be secured through the use of space tape and double sided velcro 8 inches tall, 6 inch diameter Enough space within for all components 3.7 Sq. In. contact patch needed to withstand a 10g impact Radius of 1.1 inches needed

Payload Shape

Balloon We will be using a Kaymont HAB-600 balloon Can lift a 500g payload to at least 75000 Ft. Should be able to lift a 250g payload to 125000 Ft. We will either be using Helium from Airgas Welding supplies or Hydrogen From A & B welding

Camera GoPro Stripped to the lens and motherboard In order to prevent clouding of the lens, appropriate insulation must be used SD card to record images captured, with a photo taken every 5 min

Means of Location Radio Bug Eagle Flight Computer Transmits speed and location every minute Connects directly to Eagle Flight Computer Eagle Flight Computer Equipped with GPS locator system Functional to a max altitude of 262,500 ft 20 hour battery life Audio Beacon Kit (High Altitude Science) Emits loud beep for easy on ground location Powered by 9V Battery Energizer Ultimate Lithium Battery Battery life of 12 days

Payload measurements Temperature/Pressure (inner) Eagle Flight Computer includes Temperature/Pressure Sensor Plugs directly into the Eagle Flight Computer Automatically recorded Temperature/Pressure (outer) RadioBug Transmits once every minute Acceleration Adafruit 10-DOF IMU Breakout 3 axis gyroscope 3 axis accelerometer 3 axis compass

Parachute Spherachute Balloon Parachute 2 ft in diameter Calculations are based on 15 to 20 ft./sec. descent.

Cost and Weight Totals Slightly high cost, yet it makes up for this with an incredibly low weight, opening up options for potential experiments for Stage 3

Potential Experiments Analysis of High Altitude environment Moss Effects of radiation Newly germinated seeds Long Exposure Space Photography Use a lightweight yet high quality camera (classified) to acquire an extended shutter speed Paired with large aperture

Feasibility Weight Budget: 250 grams Our payload is well within weight restraints, and it will be easy to acquire and put together. Team members have easy access to appropriate materials to create the payload Lightweight brings many options for future experiments in Stage 3

Questions?