2012 CoDR

2012 CoDR Mission Statements RocketSat 8 shall integrate and validate the Roll Out De-Orbiting Device (RODEO) developed by Composite Technology Development (CTD). This shall provide a means to de-orbit future small satellites. RocketSat 8 shall validate an attitude determination system for future RockSat missions

2012 CoDR Theory and Background 23 small satellites (10kg-500kg) launched every year by the United States Growth of small satellites in space exponentially increases the likelihood of collisions The rise in the number of satellites in orbit has led to an increasing need for a cost effective and lightweight means to de- orbit small satellites. The RocketSat VII attitude determination system was successful, but the accuracy of the system couldn’t be verified since there was no known solution for the attitude of the rocket.

2012 CoDR Requirements Project RequirementsParent Requirement O1Shall deploy the RODEO deviceMission Objective O2Shall validate the deployment of the RODEO deviceMission Objective O3Shall validate the ability of RODEO to de-orbit small satellites Mission Objective O4Shall comply with all RockSat-X requirementsMission Objective O5Shall determine the orientation of the payloadMission Objective

2012 CoDR Requirements (cont.) System Requirements Parent Requirement S1Shall deploy the RODEO device on the RTS (RODEO Test Structure)O1 S2Shall capture image of deployed RODEO sailO2 S3Shall detach the RTS from the rocket canisterO3 S4Shall confirm that RTS experiences decelerationO3 S5Shall meet all structural requirements as defined in the RockSat-X user guide O4 S6Shall meet all electrical requirements as defined in the RockSat-X user guide O4 S7Shall determine the orientation of the payload within ten degrees of accuracy O5 S8The orientation of the payload shall be known on all three axisO5

2012 CoDR Requirements (cont.) System Level 2 Requirements Parent Requirement S1.1Shall deploy in a time sufficient for the needs of the missionS1 S2.1Shall capture an image of RODEO while it is in the field of view of the camera S2 S2.2Shall set a image frame rate and quality that confirms RODEO deployment S2 S2.3Shall store the image dataS2 S3.1Shall detach from rocket at the determined timeS3 S3.2Shall detach from rocket without damaging equipmentS3 S3.3Shall generate acceleration upon detachmentS3 S4.1Shall measure deceleration of the RTSS4 S4.2Shall transmit deceleration data from RTS to the rocketS4

2012 CoDR Requirements (cont.) System Level 2 Requirements (continued) Parent Requirement S6.1Shall have sufficient power to perform all required operationsS6 S7.1Shall use attitude sensors that are within five degrees of accuracy S7 S7.2Shall incorporate an attitude determination algorithm that is accurate to within ten degrees of accuracy S7 S8.1Shall employ attitude sensors that can determine the attitude on all three axes S8

2012 CoDR Minimum Success Criteria Mission success depends on the image capture of the deployed RODEO device. Secondary mission success is determined by the validation of the RocketSat8 attitude determination system

2012 CoDR Mission overview: Concept of Operations Continue Telemetry Splash Down End Telemetry Pre-Launch -Begin Telemetry -Begin attitude data collection Deploy RTS RTS data collection Send Data from RTS to payload Apogee Altitude: ≈160 km Initialize Camera Begin Rodeo Deployment Chute Deployment Continue Telemetry

2012 CoDR Mission overview: Expected Results We expect: the RODEO system to be fully extended while attached to the rocket to capture an image of the extended RODEO system the RTS to detatch from the rocket canister to measure deceleration from the RTS to transmit the deceleration data from the RTS We expect to characterize the rockets attitude and verify it with a known solution 10

2012 CoDR 11

2012 CoDR User Guide Compliance: Structures 12

2012 CoDR The structure thus far will be composed of two plates. The bottom plate will include the RTS containing the deployable given to us by Composite Technology Development, as well as the ejection system. The electronics boards and the ADS(Attitude Determination System) will all be utilized on the top plate with the cameras. 13

2012 CoDR 14 Electronics Board Deployable Bottom Plate Camera on bottom of top plate Top Plate Keep Out Zone Ejection System ADS

2012 CoDR RODEO Test Structure (RTS) Layout: rough diagram 15 RTS RODEO Note: Drawing not drawn to scale

2012 CoDR The payload shall conform to the requirements set forth in the 2011 RockSat-X User Guide The system shall successfully deploy the hardware manufactured by Composite Technology Development. The structure will interface with RockSat-X through provided mounting surfaces. 16

2012 CoDR All electronic interfaces will be held in place throughout the duration of the flight with the exception of the deployable. The structure will withstand the forces of launch and protect the scientific and electrical systems. The structure will thermally protect the electronics for as long as reasonable data can be collected. The system shall successfully take at least one photo of the deployable as it leaves the canister, and house the cameras securely during launch. 17

2012 CoDR The ejection system shall be durable enough to survive the forces of launch. The structure shall allow exposure to an open air environment while still protecting electronics and instruments from harm. 18

2012 CoDR Electrical Subsystem Electrical Subsystems: -Power -Memory -Radio Communications (Comm) -Mechatronics -Imaging 19

2012 CoDR Conceptual Electrical Configuration Note: Not actual layout 20 MCU RTS Deploy Power Comm Memory Power Comm Imaging Sail Deploy MCU Main Structure RTS Sensors Power line Digital line Analog Line Charging (before deploy) Radio ADS

2012 CoDR The GSE Controlled power lines shall carry a total current of less than 1.85 A. The Timer Controlled power lines shall carry a total current of less than 3.75 A. All telemetry lines shall operate in the range of 0 – 5 V. All components shall operate at 28 V or less. Higher voltages shall be used only with express written permission. All components shall be conformal coated to protect from the space environment. 21

2012 CoDR State Chart: Software State 1 Pre-Launch State 1 Pre-Launch State 2 Launch State 2 Launch State 3 Apogee State 3 Apogee State 4 Post-Apogee State 4 Post-Apogee State 5 Splash Down State 5 Splash Down Power On G Switch Initial Code Initialize Devices Check G Switch Initial Code Initialize Devices Check G Switch No Main Code Store Data Check Timed Sequence One Main Code Store Data Check Timed Sequence One Yes Telemetry Apogee Code Initialize Camera Delay 30 seconds Apogee Code Initialize Camera Delay 30 seconds Camera Deploy Code Deploy RTS Get Data RTS Deploy Code Deploy RTS Get Data RTS Yes Telemetry RTS Final Code Check Time Sequence Two Stop Recording Final Code Check Time Sequence Two Stop Recording Telemetry

2012 CoDR Design Overview: RockSat-X 2012 User’s Guide Compliance Compliance Rough Order of Magnitude (ROM) mass estimate Plates and launcher ~ 10 lbs Rts ~ 2-3 lbs Estimate on payload dimensionsRTS~ 1U cube sat configuration Deployables/booms?Yes-Deployable How many ADC lines?Exact amount not confirmed Asynchronous use?Yes Parallel use?Yes Power lines and timer use?Yes- will need timer for RTS deployment CG requirementUnderstood Are you utilizing high voltage?No

2012 CoDR Management Andrew Broucek Project Manager Wheeler Gans Systems Lead Nate Keyek- Franssen Structures Lead Emma Young Science Lead Andrew Thomas Electrical Lead Ethan Long Software Lead Devin Mackenzie Structures Kameron Medina Structures Eric Lobato Science Aram Podolski Science Shreyank Amartya Electrical Brendan Lee Electrical Long Tat Software

2012 CoDR Preliminary Schedule- Important Dates TaskDate Conceptual Design Review (CoDR) 10/4/11 Online Progress Report 1 Due 10/21/11 Preliminary design Review (PDR) 10/25/11 Online Progress Report 2 Due 11/11/11 Critical Design Review (CDR) 11/29/11 Order Hardware and Begin Fabrication 12/5/11

2012 CoDR Preliminary Schedule- Weekly Schedule DayTime/Description Monday1-3pm Software Team meeting Tuesday2-3pm Structures Team meeting 5-7pm Science Team meeting Wednesday2-3pm Executive Meeting Thursday4-6pm Electrical Team meeting Mon-Fri5-8pm Common working hours

2012 CoDR Budget Source of FundingAmount Composite Technology Development$24,000 UROP (Not Confirmed)~$3,000 EEF(Not Confirmed)~$2,000 Total:$29,000

2012 CoDR Additional Support We will be working in conjunction with Composite Technology Development (CTD). Our main advisors from CTD are still to be determined 28

2012 CoDR Conclusions Mission Statement To integrate and validate the Roll Out De-Orbiting Device (RODEO) developed by Composite Technology Development (CTD) and test the attitude determination system from RocketSat VII Next Steps Prepare for PDR Finalize Design 29

2012 CoDR Questions 30

2012 CoDR Refrences 1 "The Bright Future of Small Satellite Technology :: Via Satellite." Guest Edition :: Satellite Today. Web. 04 Oct Carroll, Shawn, and Chris Koehler. Rocksat-X User Guide. 8 Feb PDF. 31