AAE 450 Spring 2008

Nicole Bryan3.20.08Avionics

Final Presentation Slides

1

AAE 450 Spring 2008

Power Budget

Avionics 2

Vehicle Flight Time Balloon Rise Time

Vehicle System% of Operating

PowerPower

(W)

Energy Consumption

(Wh)Mass

(kg)Power

(W)

Energy Consumption

(Wh)Mass

(kg)Payload 5 10 1.04 0.01 10 30.00 0.27Propulsion 35 70 7.25 0.07 0 0.00 0.00Attitude Control 15 30 3.11 0.03 0 0.00 0.00Communications 10 20 2.07 0.02 20 60.00 0.55Command and Data Handling 5 10 1.04 0.01 10 30.00 0.27Thermal 5 10 1.04 0.01 0 0.00 0.00Power Management 25 50 5.18 0.05 10 30.00 0.27Total 100 200 20.72 0.19 50 150.00 1.36Safety Factor of 1.5 300 31.08 0.28 75 225 2.05

Assumptions: 200g Payload Case, Silver Zinc Battery, Balloon Launch (3hr rise time, 373 second flight time) Source: Justin Rhodes and Nicole Bryan

Total System Power: 200 Watts

AAE 450 Spring 2008

Non-Space-Rated Sensors

Avionics 3

Sensor Type Part Number Manufacturer Unit Price

   

Thermal TS3-85 Cantherm $10.29

Pressure 2000260Measurement Specialties Inc. $104.06

Flow 26616Gems Sensors, Inc. $154.95

Force FSS1500NSR

Honeywell Sensing and Control $46.56

AAE 450 Spring 2008

Space-Rated Sensors

Avionics 4

Sensor Type Part Number ManufacturerUnit Price

       

Thermal S311-641/04

Honeywell Sensing and Control ~$800

Pressure PPTR

Honeywell Sensing and Control $970.00

AAE 450 Spring 2008

Electronic Parts: Component Rating

5

Commercial

Class B

Class S

Commercial Requirements Class S Requirements

Infinite production lot size Built one at a time

No burn-in testing Extended burn-in time (up to 240 hours)

No detailed failure analysis Extended failure analysis

No life testing 1,000 hour life test on every lot

No traceability Traceable to the raw materials

> 1% failure per 1000 hours allowed 0.0001% failures per 1000 hours allowed

1 NASA Electronics Parts Assurance Group

Avionics

Reference: Justin Rhodes

References Wertz, James R., and Wiley J. Larson, eds. Space Mission Analysis

and Design, 3rd ed., Torrance, Kluwer Academic and Microcosm Press, 1999.

“Space Applications.” Honeywell Aerospace [online], 2007.

URL: http://www.honeywell.com/sites/aero/Space_Solutions.htm www.Digikey.com

AAE 450 Spring 2008 6