New version page

Sounding Balloon Limitations

Upgrade to remove ads

This preview shows page 1-2-3-4 out of 13 pages.

Save
View Full Document
Premium Document
Do you want full access? Go Premium and unlock all 13 pages.
Access to all documents
Download any document
Ad free experience
Premium Document
Do you want full access? Go Premium and unlock all 13 pages.
Access to all documents
Download any document
Ad free experience
Premium Document
Do you want full access? Go Premium and unlock all 13 pages.
Access to all documents
Download any document
Ad free experience
Premium Document
Do you want full access? Go Premium and unlock all 13 pages.
Access to all documents
Download any document
Ad free experience

Upgrade to remove ads
Unformatted text preview:

The High Altitude Student Platform (HASP) for Student-Built PayloadsStudent-Built Payload LimitationsSounding Balloon LimitationsHASP Addresses These IssuesConfiguration & StructureConcept Student Payload InterfaceWeight & SizeCommand and ControlFCU HardwareDAU HardwarePower SystemAnticipated Flight OperationsSummaryLSU 06/23/04 COSPAR 2004, HASP Presentation 1The High Altitude Student Platform (HASP) for Student-Built PayloadsT.G. Guzik and J.P. WefelDept. of Physics & AstronomyLouisiana State UniversityBaton Rouge, LA U.S.A.LSU 06/23/04 COSPAR 2004, HASP Presentation 2Student-Built Payload Limitations•Many higher education institutions across U.S. are engaging students in design, construction and operation of aerospace payloads (See ACES presentation, this conference)–Small payloads launched on sounding balloons–Compact Earth-orbiting satellites•Development life cycle needs to be limited to one year to conform with student schedule–Feasible with small sounding balloon payloads–Difficult for satellites where launch schedule is uncertain, but could be flight tested on a balloonLSU 06/23/04 COSPAR 2004, HASP Presentation 3Sounding Balloon Limitations•Sounding balloons have limited “hang time”–Total flight time about 2 ½ hours–Time above 24 km about ½ hour•Inappropriate for testing student-built satellites or new technologies–At most only cursory evaluation of power, data acquisition & telemetry subsystems–No test of day-night thermal cyclingLSU 06/23/04 COSPAR 2004, HASP Presentation 4HASP Addresses These Issues•Support & flight test multiple student built payloads–Altitude > 36 km, duration of ~20 hours•Make use of NASA National Scientific Balloon Facility (NSBF) experience•Provide standard power, data, mechanical interface•Use CubeSat model for design–Developed by Stanford and CalPoly–Size is 10 cm cube–Max weight is 1 kg–Power is ~650 mWLSU 06/23/04 COSPAR 2004, HASP Presentation 5Configuration & Structure•Core aluminum frame provides platform integrity–Mounting for flight data / control systems–Attachment for swivel harness and ballast hopper–Composite braces to support student payloadsLSU 06/23/04 COSPAR 2004, HASP Presentation 6Concept Student Payload Interface•Mounting plate consistent with CubeSat model–Held at corner beams so faces are unobstructed–Mounting plate includes power & data interface–Can be sent to institution for pre-integration•Alternate mounting is also possible–Specify hole pattern on support braces–Heavier payloads could be mounted on top of Al structure•ICD determined during student payload applicationLSU 06/23/04 COSPAR 2004, HASP Presentation 7Weight & Size•HASP dimensions–Core frame is 112 cm (44”) by 91.5 cm (36”) by 51 cm (20”) tall–Student payload braces extend 112 cm away from frame–Total dimensions are, thus, ~3.4 m x 3.2 m x 0.5 m•Weight determined mostly by measured values–Total is 211 kg (465 lbs)HASP Weight BudgetComponent Weight (kg)Fight Control Unit 2.3Data Archive Unit 2.3FCU, DAU Vessel 18.1Data Hard Disk 9.1Auxiliary XTM 2.3Student Payloads 8.2Cabling 13.6Thermal Insulation 13.6Batteries 9.1Structure 68.9CIP 27.2Contingency 36.3Total 211LSU 06/23/04 COSPAR 2004, HASP Presentation 8Command and Control•Heritage from ATIC scientific balloon payload systems–Directly adopt flight proven hardware and software design•Flight Control Unit (FCU) –Handles commands–Monitors power system–Serial link with payloads–Collects status information•Data Archive Unit (DAU)–On-board data recording–LOS transmission of HASP & student payload data to ground at rate up to ~ 300 kilobits per second•NSBF supplied CIP controls balloon systemsLSU 06/23/04 COSPAR 2004, HASP Presentation 9FCU HardwareFlight Control Unit front (left) and back (right) flown on the ATIC-02 experiment from December 29, 2002 to January 18, 2003LSU 06/23/04 COSPAR 2004, HASP Presentation 10DAU HardwareData Archive Unit (left) and Hard Disk Pressure Vessel (right) flown on the ATIC-02 experiment from December 29, 2002 to January 18, 2003LSU 06/23/04 COSPAR 2004, HASP Presentation 11Power System•Route 28V buss and convert power locally•Power budget from measured values & includes an 80% efficiency factor•24 hour lifetime with two 10 cell lithium battery packsHASP Power BudgetComponent V A WFCU 5 3.5 17.5DAU 5 3.9 19.5Aux XTM 5 1.3 6.5Data Disk5 0.8 4.012 1.3 15.6StudentPayloads5 0.3 1.53.6 1.4 5.1Total 69.7LSU 06/23/04 COSPAR 2004, HASP Presentation 12Anticipated Flight Operations•Flight Ops take place at NSBF or Ft. Sumner•Initially HASP is setup & integrated with NSBF systems•Student payload integration & testing follows•Launch tries to target “turn-around” conditionsLSU 06/23/04 COSPAR 2004, HASP Presentation 13Summary•The High Altitude Student Platform supports advanced student-built payloads–Regular schedule of launches at least once per year–Provide high altitude (~36 km) and reasonable duration (~15 to 20 hours)–Flight test student-built satellite–Fly payloads too heavy for sounding balloons•Existing flight designs and experience minimize cost of development and operation–Hardware / software from flight proven ATIC payload–Use time-tested NSBF balloon vehicle hardware–Capitalize on decades of NSBF experience with flight operations•Could be easily adapted for LDB (~15 – 30 days) flights•Could become major part of Aerospace Workforce


Download Sounding Balloon Limitations
Our administrator received your request to download this document. We will send you the file to your email shortly.
Loading Unlocking...
Login

Join to view Sounding Balloon Limitations and access 3M+ class-specific study document.

or
We will never post anything without your permission.
Don't have an account?
Sign Up

Join to view Sounding Balloon Limitations 2 2 and access 3M+ class-specific study document.

or

By creating an account you agree to our Privacy Policy and Terms Of Use

Already a member?