.Web viewThe mission of Team Andromeda is to develop a BalloonSat with a payload that will collect
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Transcript of .Web viewThe mission of Team Andromeda is to develop a BalloonSat with a payload that will collect
Colorado Space Grant Consortium
Gateway to Space
Design Review A/B
Table of Contents
Team OrionOctober 22, 2012
1. Mission Overview
2. Requirements Flow Down
6. Test Plan, Safety, and Results
7. Expected Results
1.0 Mission Overview
The mission of Team Andromeda is to develop a BalloonSat with a payload that will collect data on ultraviolet radiation to serve a dual purpose: to allow us to compare our relevant data with past records of the suns activity, as well as find a correlation between altitude and strength of UV rays. We will determine how the solar activity has changed from eleven years ago roughly one sunspot cycle through the use of data from previous BalloonSat missions, the National Center for Atmospheric Research, and the UV-B Monitoring and Research Program at Colorado State University. We will also determine if there is a relationship between UV rays and altitude.
According to the National Oceanic and Atmospheric Administration, the frequency of solar storms has been increasing in the last 3 years. This December and the beginning of 2013 is the peak of solar activity in the 11-year sunspot cycle of the sun, wherein powerful solar flares have a higher probability of occurring. The increase in solar activity has led to an upsurge in the amount of radiation that impacts the earths atmosphere specifically UVA and UVB rays. Sunspots and solar flares release large quantities of UVA and UVB radiation that can heat up the earths atmosphere, and cause satellites to experience increased drag. The UV-B Monitoring and Research Program was started to monitor the amount of radiation that is reaching agriculture and forests, and has stated that UVB rays have the largest solar impact on the health of crops. In addition, UVA radiation is also harmful to life on Earth and can cause damage on a cellular level. Since UVA rays have a wavelength of 315-400 nanometers, it is close to that of visible light, and 70% to 95% penetrates through the atmosphere. UVB rays are even more damaging to life; however, UVB rays are at a shorter wave length 280-315 nm - and almost all the rays are absorbed by the ozone layer. With the increase of solar activity, we believe that more radiation is encountering earths atmosphere and, therefore, more is reaching the life on earth. Also, with an increased amount of UVB rays, the atmosphere absorbs more energy, resulting in higher temperatures.
With our ultraviolet radiation sensors, we will determine how much UV radiation is penetrating the atmosphere at different altitudes. Also, we will determine if the amount of ultraviolet radiation present is more or less than the data found at several research institutions. We will compare our information to data from the National Center for Atmospheric Research which is based in Boulder, Colorado, and the UV-B Monitoring and Research Program located at Colorado State University. As our BalloonSat rises in altitude, we hypothesize that there will be a minimum increase in UVA detection, and, conversely, there will be an exponential increase in UVB detected. We also hypothesize that the levels of UV radiation detected will be higher than that of past years. If our hypothesis were correct, it would suggest that there is indeed an increase in solar activity. If this were the case, it would be important to follow up on our research, as solar activity has a great impact on life on earth: communication satellites could be at risk, damage to life on a cellular level could occur, and there would be a heightened risk of damage to the electric grid at higher altitudes. If the solar activity is increasing, there is the possibility of large solar flares happening that would cause even more damage. However, if our data proves that there is less solar activity currently, than previous years, it would suggest the possibility that the peak of solar activity has already occurred. Either outcome would provide valuable information on the future of human life.
Our BallonSat would be equipped with six UVA detectors two on the top, and one on each side perpendicular to the attaching rope and one UVB detector located on top of the structure. We will also have two UVA detectors and one UVB detector on the ground, budget permitting, to have a control in the experiment. The UVA detectors are TSL235R Light to Frequency Converters, which are temperature-compensated sensors for the wavelength range of 320 nanometers to 700 nanometers. To collect accurate data the sensors will be covered with a material to filter out the visible light spectrum and leave only UVA wavelengths. The UVB detector will be the Tocon E2 pre-amplified Sensor, which is an UV-Index photodetector.
Along with our UV sensing payload, we will fly two cameras on our BalloonSat: a Canon A570IS Digital Camera to take pictures, and a Go Pro Hero camera that will record high definition video of the flight. Our objective with the two cameras is to provide video and picture representation of the curvature of the earth.
2.0 Requirements Flow Down
In order to achieve a successful operationh of the BalloonSat of mission Andromeda team Orion has derived a series of fundamental requirements based on basic mission objectives and the mission statement. All higher level requirements are based and supported by any and all requirements below them; with level 2 and above being the higher level requirements. The level 0 requirements specify the primary mission objectives, level 1 requiems identify the systems and secondary objectives necessary to achieve the level 1 requirements. All higher level requirements follow the same format stating the subsystems and objectives necessary to accomplish the requirements of the lower levels.
The BalloonSat will collect electromagnetic radiation at Ultraviolet-A wavelengths as a function of altitude.
The BalloonSat will measure internal and external conditions.
BalloonSat will take in-flight pictures
The BalloonSat will be survive to near space conditions.
We will meet all the RFP requirements
Compare Data with NCAR Data.
Will test all programmed systems
Will fly six UVA sensors and two UVB photodiodes.
BalloonSat will fly a GoPro Hero III and a Canon A780
Will fly pressure sensors, temperature sensors, acceleration sensors, and humidity sensors.
The BalloonSat will be contained within a rigid, insulated foam core structure.
0.4 and 0.5
ArduinoUno will be programmed to record all data to an SD card.
Sensors will be calibrated to known conditions
Sensors will record data to micro SD card attached to the ArduinoUno
1.3 an 1.1
Both cameras will record to an internal SD card
Instruments will be attached to structure with Velcro and/or hot glue
All programs will be verified prior to launch
The design of our structure is one of the most important aspects of our project. Some of the basic things that this mission will require out of our structure is to rise up to approximately 30km and then fall back down to the earth, with a parachute slowing it down, and survive an impact with the ground at about 8 m/s. To do this we are building our structure out of a rigid material called foam core. It is easily cut and formed into the shape of our structure yet it is rigid enough to hold up against the force of impact and keep all of our instruments safe. This foam core will be held together with hot glue on the inside and aluminum tape on the outside. These will keep the foam core from coming apart at the seams and can brace weak areas such as corners. The structure's size and shape are basic for the main reason that it does not have to be complicated. The dimensions of the structure are 15cm by 15cm by 15cm cube that is ideal for holding all of our instruments and balancing the weight of our structure. By keeping the structures exterior simple it will allow us with more time to focus on the more complicated aspects of our project like writing the code for all the sensors.
Another obstacle we need to overcome is keeping all the components and instruments of our BalloonSat warm enough to operate. One of our requirements is that the BalloonSat is that the interior temperature is not to fall below -10 C. To do this our structure will be insulated and will use a heater. The heater runs off of three 9V batteries and is turned on and off by a switch. This switch will be mounted on the outside of our structure and will be easily turned off and on before launch. This is not our only temperature concern. We will be using several light to frequency converters and a UVB sens