STRA ST RATOSPHERIC OSPHERIC FLI LIGHT T ON ON THE BAL ALLO - - PowerPoint PPT Presentation

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STRA ST RATOSPHERIC OSPHERIC FLI LIGHT T ON ON THE BAL ALLO - - PowerPoint PPT Presentation

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POLA LARIS IS EXP XPERIM ERIMENT ENT: : DATA COLL LLEC ECTE TED D DURING RING THE STRA ST RATOSPHERIC OSPHERIC FLI LIGHT T ON ON THE BAL ALLO LOON ON BEXU XUS18 S18 D. Paganini, C. Cacco, F. Cipriani, F. Cocco, T. Cortese, R.

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POLA LARIS IS EXP XPERIM ERIMENT ENT: : DATA COLL LLEC ECTE TED D DURING RING THE ST STRA RATOSPHERIC OSPHERIC FLI LIGHT T ON ON THE BAL ALLO LOON ON BEXU XUS18 S18

  • D. Paganini, C. Cacco, F. Cipriani, F. Cocco, T. Cortese, R. Dalla Vecchia, M. La Grassa, M. Lora, M. Zorzan
  • F. Branz, L.Olivieri, F. Sansone, A, Francesconi
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polAris

PRESENTATION OVERVIEW

1° SSA Symposium - Padova

  • 1. RADIATOR CONCEPT
  • 2. POLARIS EXPERIMENT
  • 3. SETUP EVOLUTION DURING RX/BX PROGRAMME
  • 4. FLIGHT DATA
  • 5. LESSONS LEARNED & CONCLUSIONS

10 December 2015

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polAris

RADIATOR CONCEPT

Heat radiators are designed to manage the heat of P/L Internal Generation Variable P/L activity and Environment heat fluxes require FLEXIBILITY & CONTROL

  • n RADIATORS PERFORMANCE

1° SSA Symposium - Padova

10 December 2015

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The radiator is composed by three metallic plates linked together so that an actuation system can put them in good thermal contact or separate them

22° ESA PAC Symposium - Tromso

TWO GEOMETRY CONFIGURATIONS 10 December 2015

RADIATOR CONCEPT

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The radiator is composed by three metallic plates linked together so that an actuation system can put them in good thermal contact or separate them TIGHENED NED CONFI FIGUR URATION ATION CONDUCTIVE LINK BETWEEN THE PLATES LOWER EQUIVALENT THERMAL RESISTANCE MAXIMUM XIMUM HEAT EXCHA HANGE GE

22° ESA PAC Symposium - Tromso

10 December 2015

RADIATOR CONCEPT

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The radiator is composed by three metallic plates linked together so that an actuation system can put them in good thermal contact or separate them OPEN CONFI FIGUR URATION ATION RADIATIVE LINK BETWEEN THE PLATES HIGHER EQUIVALENT THERMAL RESISTANCE MINIMUM IMUM HEAT EXCHA HANGE NGE

1° SSA Symposium - Padova

10 December 2015

RADIATOR CONCEPT

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The radiator is composed by three metallic plates linked together so that an actuation system can put them in good thermal contact or separate them OPEN CONFI FIGUR URATION ATION RADIATIVE LINK BETWEEN THE PLATES HIGHER EQUIVALENT THERMAL RESISTANCE MINIMU IMUM HEA EAT EX EXCHANGE HANGE TIGHENED NED CONFI FIGUR URATION ATION CONDUCTIVE LINK BETWEEN THE PLATES LOWER EQUIVALENT THERMAL RESISTANCE MAXIMUM XIMUM HEAT EXCHA HANGE GE LINEAR ACTUATION

1° SSA Symposium - Padova

10 December 2015

RADIATOR CONCEPT

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PRESENTATION OVERVIEW

1° SSA Symposium - Padova

  • 1. RADIATOR CONCEPT
  • 2. POLARIS EXPERIMENT
  • 3. SETUP EVOLUTION DURING RX/BX PROGRAMME
  • 4. FLIGHT DATA
  • 5. LESSONS LEARNED & CONCLUSIONS

10 December 2015

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  • 1. Test a new concept of heat radiator in variable environmental conditions
  • 2. Control the radiator to guarantee the thermal steadiness of a dummy payload
  • 3. Compare the numerical thermal model with the measured data

POLARIS EXPERIMENT

1° SSA Symposium - Padova

POLymer Actuated Radiator with Independent Surfaces 10 December 2015

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POLARIS EXPERIMENT

  • POLARIS Setup flew into

stratosphere on October 2014

  • Aluminium Radiator Prototype
  • Two Independent Actuation

Systems for the radiator movement

  • Set of sensors for full radiator

performance evaluation

1° SSA Symposium - Padova

10 December 2015

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POLARIS EXPERIMENT

LINEAR ACTUATION DIELECTRIC ELASTOMER ACTUATORS ELECTRIC LINEAR ACTUATOR Reliable and Accurate Completely manufactured in the University facilities

1° SSA Symposium - Padova

10 December 2015

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POLARIS EXPERIMENT

LINEAR ACTUATION DIELECTRIC ELASTOMER ACTUATORS ELECTRIC LINEAR ACTUATOR Reliable and Accurate Completely manufactured in the University facilities

1° SSA Symposium - Padova

10 December 2015

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POLARIS EXPERIMENT

1° SSA Symposium - Padova

High Voltage OFF High Voltage ON Basically they are COMPLIANT CAPACITORS Wrapping it around a compressed coil spring is possible to

  • btain

a LINEA EAR ACTUATOR UATOR 10 December 2015

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1° SSA Symposium - Padova

POLARIS EXPERIMENT

10 December 2015

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polAris

POLARIS EXPERIMENT

LINEAR ACTUATION DIELECTRIC ELASTOMER ACTUATORS ELECTRIC LINEAR ACTUATOR Reliable and Accurate Completely manufactured in the University facilities

1° SSA Symposium - Padova

10 December 2015

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1° SSA Symposium - Padova

POLARIS EXPERIMENT

10 December 2015

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POLARIS EXPERIMENT

SPOT MEASUR ASURE Dummy Payload Temperature Voltage Amperage Inner Radiator Plate Temperature and its spatial distribution Outer Radiator Plate Temperature and its spatial distribution Plates Supports Plates position Environment Boundary Condition Pressure Incoming Visible Radiation Incoming IR Radiation Temperature

A complete set of sensors was included in the setup, monitoring both radiator temperatures and environment boundary conditions

1° SSA Symposium - Padova

10 December 2015

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polAris

PRESENTATION OVERVIEW

1° SSA Symposium - Padova

  • 1. RADIATOR CONCEPT
  • 2. POLARIS EXPERIMENT
  • 3. SETUP EVOLUTION DURING RX/BX PROGRAMME
  • 4. FLIGHT DATA
  • 5. LESSONS LEARNED & CONCLUSIONS

10 December 2015

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DURING RX/BX (PROPOSAL)

1° SSA Symposium - Padova

 Mission Concept  Mission Objectives Experiment MASS: 4 Kg Experiment DIMENSIONS: 30 X 30 X 30 cm 10 December 2015

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DURING RX/BX (SW)

1° SSA Symposium - Padova

Experiment MASS: 5 Kg Experiment DIMENSIONS: 40 X 30 X 30 cm  Preliminary WBS  8 DE Actuators configuration  Experiment divided in 3 main sections 10 December 2015

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DURING RX/BX (SW)

1° SSA Symposium - Padova

10 December 2015

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DURING RX/BX (PDR)

1° SSA Symposium - Padova

 First version of the S.E.D.  Definition of the WBS  Definition of the Experiment REQUIREMENTS 10 December 2015

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DURING RX/BX (PDR)

1° SSA Symposium - Padova

 Design of the Radiator Assembly  Preliminary Design of the Actuation System  Preliminary Design of the Backup A.S. Experiment MASS: 12 Kg Experiment DIMENSIONS: 46 X 34 X 36 cm 10 December 2015

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DURING RX/BX (PDR)

1° SSA Symposium - Padova

10 December 2015

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DURING RX/BX (CDR)

1° SSA Symposium - Padova

POLARIS Experiment DESIGN completed Experiment MASS: 15 Kg Experiment DIMENSIONS: 46 X 38 X 40 cm 10 December 2015

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DURING RX/BX (CDR)

1° SSA Symposium - Padova

10 December 2015

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DURING RX/BX (IPR)

1° SSA Symposium - Padova

10 December 2015

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DURING RX/BX (IPR)

1° SSA Symposium - Padova

FORC RCE DEFORMAT EFORMATION ION

1 2 3 4 5 6 7 1000 2000 3000 4000 5000

All the tested actuators show maximum DEF EFORM ORMATION ATIONS S OF 5 M MM, , but limited performance for the mechanism requirements FORCE [N] VOLTAGE [V] 10 December 2015

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DURING RX/BX (IPR)

1° SSA Symposium - Padova

10 December 2015

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DURING RX/BX (EAR)

1° SSA Symposium - Padova

10 December 2015

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DURING RX/BX (EAR)

1° SSA Symposium - Padova

10 December 2015

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DURING RX/BX (LAUNCH CAMPAIGN)

1° SSA Symposium - Padova

10 December 2015

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PRESENTATION OVERVIEW

1° SSA Symposium - Padova

  • 1. RADIATOR CONCEPT
  • 2. POLARIS EXPERIMENT
  • 3. SETUP EVOLUTION DURING RX/BX PROGRAMME
  • 4. FLIGHT DATA
  • 5. LESSONS LEARNED & CONCLUSIONS

10 December 2015

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FLIGHT DATA

The setup flew into stratosphere on-board the balloon BEXUS18 from the ESRANGE Space Center (9 October 2014)

1° SSA Symposium - Padova

10 December 2015

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FLIGHT DATA - ENVIRONMENT

10 December 2015

1° SSA Symposium - Padova

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FLIGHT DATA - ENVIRONMENT

1° SSA Symposium - Padova

10 December 2015

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FLIGHT DATA - ENVIRONMENT

1° SSA Symposium - Padova

10 December 2015

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FLIGHT DATA - ENVIRONMENT

1° SSA Symposium - Padova

10 December 2015

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FLIGHT DATA - RADIATOR

1° SSA Symposium - Padova

10 December 2015

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FLIGHT OUTCOMES

1° SSA Symposium - Padova

10 December 2015

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FLIGHT OUTCOMES

1° SSA Symposium - Padova

10 December 2015

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PRESENTATION OVERVIEW

1° SSA Symposium - Padova

  • 1. RADIATOR CONCEPT
  • 2. POLARIS EXPERIMENT
  • 3. SETUP EVOLUTION DURING RX/BX PROGRAMME
  • 4. FLIGHT DATA
  • 5. LESSONS LEARNED & CONCLUSIONS

10 December 2015

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  • Despite of an unexpected flight condition, it was possible to prove

functionality and potentialities of this concept of radiator

  • Experiment bus & software were perfectly functional during the whole flight
  • Dielectric Elastomers Actuators manufacturing process was developed,

even though the DEs performance were not enough to fulfill the experiment requirements

  • New model was developed and post flight work was focused on vacuum test

to characterize the radiator performance in a more stable environment

polAris

LESSONS LEARNED & CONCLUSIONS

1° SSA Symposium - Padova

10 December 2015

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  • How to deal with the shipment and procurement of the experiment

components: the experiment manufacturing (and thus all the following phases) should be carefully planned

  • How to deal with the development of new technologies without extensive

literature references (i.e. Dielectric Elastomers): the technology development should not be absolutely underestimated

  • KEEP IT SIMPLE
  • Define your objectives, state the requirements you need in order to fulfill

them and then base your design choice on them. Once you froze your design (CDR) don’t change desing!

polAris

LESSONS LEARNED & CONCLUSIONS

1° SSA Symposium - Padova

10 December 2015

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ACKNOWLEDGEMENTS

Sp Special ial than anks ks to:

  • Prof.
  • f. Alessandro

ssandro France ncesconi sconi

  • Dr.

. France ncesco sco Branz

  • Dr.

. Loren renzo zo Oliv ivie ieri ri

  • Dr.

. France ncesco sco Sa Sansone

  • ne

1° SSA Symposium - Padova

10 December 2015

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THANK YOU Questions?

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CONTACTS

Speaker: Davide Paganini – Team Leader of POLARIS Experiment (M.Sc. Aerospace Engineering Student at University of Padova) E-Mail: dav.paganini@gmail.com E-Mail: polaris.unipd@gmail.com Tel: +39 3400578966 Team Site: http://polaris.armadillospace.com/ Facebook Page: https://www.facebook.com/polarisexperiment?hc_location=ufi

1° SSA Symposium - Padova