NART-ST: NAnosatellite Reconfigurable Tools - Structure Design

Transcription

1 NART-ST: NAnosatellite Reconfigurable Tools - Structure Design M. Süer, E. Yakut, C. Oran, GUMUSH Aerospace & Defense Ltd. Co., Istanbul, Turkey 7 th European CubeSat Symposium L i è g e, B e l g i u m 9-11 S e p t e m b e r 2015 E rd i n ç Ya k u t, R & D E n g i n e e r erdinc@gumush.com.tr / Web Site: www. gumush.com.tr

2 Outline Motivation Details of NART-ST Design FEM Analysis & Results Qualification Test Conclusion 2

3 Motivation Improving the capabilities of nano satellites Cost effective solution for CubeSat Design Modular for easy integration 3

4 Details of NART-ST Design Upper Cover NART-ST 1U Solar Panel Tog NART-ST 3U Side Panel Bottom Cover Passing Part Rod It is taken 6 regular PC104 PCBs One regular PC104 PCB dimensions is x x 17 mm It can be taken 18 regular PC104 electronic cards 4

5 Details of NART-ST Design Feature NART-ST 1U NART-ST 2U NART-ST 3U Mass 134 gr 270 gr 406 gr External Envelope 100 x 100 x cm 100 x 100 x 227 cm 100 x 100 x cm PCB Dimensions PC/ x 94 mm Custom Design PC/ x 94 mm Custom Design PC/ x 94 mm Custom Design Electronic Card Assembly Integration Vertical Vertical Vertical Electronic Card Orientation Between 1U Unit Around Vertical Axis No Yes Yes Anodizing Yes Yes Yes Minimum Severalty Unit 1U 1U 1U Fastener Screw Number Number of Elements For Assembly Integration 1U 1U 1U Sub-System Accessibility Easy Easy Easy 5

6 FEM Analysis & Results Free-Free Modal Analysis Total Mass: kg Contacts: Touch contact Fastener: Screws 1D Element Material: Rod and screws: Steel Other structure elements 6061 Alu First Mod Hz Second Mod Hz Third Mod Hz Fourth Mod Hz 6

7 FEM Analysis & Results Free-Free Modal Analysis Total Mass: 3.0 kg Contacts: Touch contact Fastener: Screws 1D Element Material: Rod Steel Other structure elements 6061 Alu Extra Mass FR4 First Mod Hz Second Mod Hz Third Mod Hz Fourth Mod Hz 7

8 FEM Analysis & Results Free-Free Modal Analysis Total Mass: kg First Mod Hz Second Mod Hz Third Mod Hz Fourth Mod Hz 8

9 FEM Analysis & Results Free-Free Modal Analysis Total Mass: 6 kg First Mod Hz Second Mod Hz Third Mod Hz Fourth Mod Hz 9

10 FEM Analysis & Results Quasi-static Accelaration Analysis Total mass: 6 kg Accelaration: 10 g Direction: X +Z +X +Y Maximum Displacement 9.19 e-6 m Von Mises Stress, Maximum Stress 19.8 MPa 10

11 FEM Analysis & Results Quasi-static Accelaration Analysis Total mass: 6 kg Accelaration: 10 g Direction: Y +Z +X +Y Maximum Displacement 1.29 e-5 m Von Mises Stress, Maksimum Stress 17.9 MPa 11

12 FEM Analysis & Results Quasi-static Accelaration Analysis Total mass: 6 kg Accelaration: 10 g Direction: Z +Z +X +Y Maximum Displacement 7.31 e-5 m Von Mises Stress, Maximum Stress 35.2 MPa 12

13 FEM Analysis & Results Random Vibration Analysis Total Mass: 6 kg X Direction RMS Von Mises Stress 8.56 MPa Y Direction RMS Von Mises Stress 8.21 MPa Frequency (Hz) Qualification PSD g 2 /Hz Acceptance PSD g 2 /Hz Random Vibration values are taken from Polar Satellite Launch Vehicle. Von Mises Stress [MPa] Frequency Values [Hz] X Axis Y Axis Z Axis Z Direction RMS Von Mises Stress 26.4 MPa 13

14 Qualification Test Qualification test made for 2U Four tests applied: Resonance Survey Quasi-static acceleration Sinusoidal Vibration Random Vibration Test profiles are taken from QB50 requirements. Tests were performed at Istanbul Technical University Labs. 14

15 Qualification Test Tables are taken from QB50 website, QB50_Systems_Requirements_issue_7.pdf 15

16 Qualification Test Tables are taken from QB50 website, QB50_Systems_Requirements_issue_7.pdf 16

17 Values [(m/s^2)/(m/s^2)] Value [(m/s^2)/(m/s^2)] Qualification Test Before and After of Quasi-Static Test for X Axis Resonance Survey Test Results Frequency [Hz] Before After Before and After of Sinusoidal Vibration Test for X Axis Resonance Survey Test Results Frequency [Hz] Önce Sonra Önce-Befor Sonra-After 17

18 Values[(m/s^2)/(m/s^2)] Qualification Test & Conclusion Before and After of Random Vibration Test for X axis Resonance Survey Test Results Frequency [Hz] Before After NART-ST was passed qualification tests and it will have space heritage at QB50 projects with BeEagleSat and HAVELSAT CubeSats. 18

19 THANK YOU! QUESTIONS? Address: Web Site: 19