Colorado Space Grant Consortium!Gateway To Space! ASEN / ASTR 2500!!!!!!Class #2!T-67Today:Today:Today:Today:Today:Today:Today:Today:Today:Today:Today:Today:Today:Today:- Announcements - One Minute Report Questions - Spacecraft Overview Part I - Really and Truly the Foundation for the Class Today:- What did you think of Jim? - Who is here for the first time? - 1 Minute Report, use same number and put full name on them and USE the sheets I gave you - Attendance Sheet - Pictures – Who didn’t get their picture taken last Tuesday - HW Assigned – N/A Today:- What size teams will we be working with? - How are they formed? - Do you have to have any experience in order to do well in this class? - What exactly is on the final exam? - What type of test is the final? - What is expected along with reading Rocket Boys? (report?) - Why is so much time given to read the book? - How much programming knowledge is necessary to succeed? - Star Wars vs. Star Trek? One Minute Reports: (8-23-11)- How do you actually pronounce your name? - How do we determine our teams? - How big are teams? - How much work will we do outside the class per week? - What are we doing with the books? - Can I volunteer at Space Grant? - Can you be a faculty mentor? - Do you have to have previous experience? - Are there any tests or quizzes? - Do we find our own community service project? - What does RFP mean? - Which Star Wars movie should a I watch? 1 Minute Reports:Colorado Space Grant Consortium!Next Time…! BalloonSat Overview - HW 01 Due - HW 02 Due !!!!Colorado Space Grant Consortium!Questions?! !!!!!!Colorado Space Grant Consortium!Spacecraft Overview!Part I !!!!!!Class #2!23 Background image taken at 100,000 feet by a student BalloonSat Updates Since We Last Met (November 4, 2009)To take pictures from space with this… Say I Wanted You... - How would you do it?- Take a picture? - Power the camera? - Record the images? - Get the image? - Save the image? - Take an image of what? - Frequency of pictures? - Get pictures from space? - Point the camera? - I know it will work? - Keep it cool? - Cost? How… - C&DH/Software - EPS - C&DH/Software - COMM - C&DH/Software - Orbit/ADCS - Orbit - Launch vehicle - Structures/Mechanisms - Integration/Test - Thermal - ManagementSpacecraft Subsystems: Power Comm Project Management Structures Thermal ADCS C&DH MOPS Ground Ops Education Web Science Software Systems Engineering TeamworkSpacecraft Subsystems: Power Comm Project Management Structures Thermal ADCS C&DH MOPS Ground Ops Education Web Science Software Systems Engineering Systems You will have on your BalloonSat- What does he want to take pictures of, how often, and when? - What type of orbit would it need to be in? - How long would it take to get it to orbit? - How long would it have to work? - How do you know it will work when it gets there? - How much would it cost and how much would it weigh? - What would you have to worry about? - What would you need? Questions Your Team Should Ask?- Launch Vehicle - Temperature Control System - Communication System - Command and Data System - Structure and Mechanisms - Power System - Attitude System - Software - Propulsion System What Do You Need? - Schedule - Budget - Plan - Testing - Reliability - Operators - People, People, People - Organization - Cash- Radiation - Temperature Extremes - Vacuum of Space - Atmospheric Drag - Cleanliness - Launch Loads - Shock - Power - Mission Life What To Worry About? - Autonomy - Cash - Pointing - Schedule - Weight1. Mission – Thus the Mission Requirements (#6) 2. Orbit Selection 3. Launch Vehicle 4. Everything else - Structures, Interfaces, and Mechanisms - Power & Thermal - C&DH/Software - Communications - ADCS - MOPS - Other The Process: (Chris’s Process)Remember Me?- Do you want to take picture of Boulder every day? - At the same time? - As many times as possible per day? - Pick orbit right up front Different Types of Orbits - Polar Orbits - LEO - GEO - Different altitudes and inclinations - Sun Synchronous Orbits - STK (Satellite Tool Kit) Orbit Selection: (#17 & #18 + #27)- Then pick launch vehicle based on your orbit needs - Weight needs - Cost needs - Certain launch vehicles can’t go to all orbits Launch Vehicle: (#15)- Your launch vehicle helps direct your structure design - Volume, CG, and weight constraints - Launch loads and shock issues associated with LV - Interface constraints - Vibration constraints Structure: (#25)Structure:Structure:Structure:Structure:Structure:Structure:- The whole purpose of the structure is to support the payload - Then the other systems - Composites - Honeycomb - Aluminum - Plate - Isogrid - Titanium - Stainless Steel Structure:- Design vs. Implementation Structure:- In addition to structure you have mechanisms - People are afraid of mechanisms - Two types, deployment and payload support - They usually are single point failures - Hard to test on ground as they are used in space - Mast example (Special Programs, Balloon) - KC-135 Boom Video Mechanisms:Questions?!- Deployment failures usually are mission ending - Spacecraft design try to minimize mechanisms - Deployment mechanisms are the biggest concern - Pointing mechanisms are less of an issue Mechanisms:- Think of it as an internet connection - Data rates are similar - Can only connect for 10 minutes (pass time) - This can vary based on orbit - Transmitter (TX) - Receiver (RX) - Antennas (TX, RX, and Ground) - Sometimes modems and TNC - TX are big power hogs but usually not on all the time - Cell phone technology - IP technology Communication: (#28)Communication: (#28)Communication: (#28) The image cannot be displayed. Your computer may not have enough memory to open the image, or the image may have been corrupted. Restart your computer, and then open the file again. If the red x still appears, you may have to delete the image and then insert it again.The Job- Attitude Determination and Control System - Driving a car on a mountain pass at night without