lituanicasat-1 pristatymas ly75rmd

7/27/2019 LituanicaSAT-1 pristatymas LY75RMD

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Laurynas Mačiulis LY1LM, [email protected]

© 2013 Kosminių tyrimų centras

www.kosmonautai.lt

LY75RMD 2013



Tikslas

Pagerbti Dariaus ir Girėno skrydžio per Atlantą80-ąsias metines

10/19/13

LituanicaSAT-1 prezentacija LY75RMD 2

Sukurti ir paleisti pirmą lietuvišką palydovą

Įrodyti, kad kosmosas yra pasiekimas ir Lieuvai

Rimantas Stankevičius S. Darius ir S. Girėnas



Nuo ko mes pradėjome

10/19/13




Gamyba

LY75RMD




Blokinė schema (System Block Diagram)

10/19/13




C&DM – Primary OBC

Performs power management

reads and logs attitude andinertial sensor data

receives telecommands from

main communications transceiver

sends telemetry to main

communications transceiver

5 June2013

“LituanicaSAT- 1” presentation for ISIS 6



C&DM – Secondary (Back-up) OBC

Controls the On board camera

Stores pictures in memory Controls the radio beacon

Routes EPS housekeeping data to the radio beacon

5 June2013

“LituanicaSAT- 1” presentation for LY75RMD 7



ADCS (stabilizavimo sistema)

5 June2013


Passive control system: –Permanent magnet(-s) (AlNiCo, approx 0.6 A/m2)

–Hysteresis rods (HyMu alloy)

Attitude sensors: –3 axis magnetometer Honeywell HMC5883L

Inertial sensors:

–3 axis angular rate gyros (L3GD20 from STMicroelectronics ) –6-axis MotionTracking device „MPU-6000“ (InvenSense)

Initial lay-out (partially based on past cubesat missions):



Švyturys (Beacon)

5 June2013


Low power consumption: 100mW RF output power;

Operates on any frequency in the 70cm (420-450Mhz) amateur bandUser definable FM (default) or CW modulation

Small size: less then 1“ x 2", fits inside a 29mm body tube and weighs less

than 1/2 ounce

Flight Heritage: ITUpSat-1 (still over 3 years in orbit)



Siūstuvas-imtuvas (UHF/VHF Tranceiver)

5 June2013


COTS FSK/GMSK transceiver Helium-100

Frequencies: –TX: 400-450 MHz

–RX: 120-150 MHz

Receive sensitivity: -104.7 dBm

@ BER 10-3

Output transmit power: 100 mW- 3 W

Input voltages: –Logic: 3.3 V

–Transmitter 5-16 V

Power usage:

–Receive: < 200 mW –Transmit: < 6 W

Maximum data rate: 38.4 kbps

Protocol support: Subset of

AX.25 (User defined through a

transparent byte-level interface) Serial interface: 3.3V UART



Energijos tiekimo sistema (EPS Control Subsystem)

5 June2013


–COTS Power Management System

Nanopower P31U from GomSpace

–Choice driven by reliability requirements

and schedule constraints

–Flight heritage: design based on AAUSAT-1

and AAUSAT-2

–Onboard 2700 mAh lithium ion battery

pack;

–Battery under-voltage and over-voltage

protection

–Two regulated power buses: 3.3V@5A and

5V@4A

–3 user-controlled output switches per

power bus w. latching current limiter –System certification for ISS pending



FM Voice Repeater

5 June2013


The FM repeater is designed for placement in low Eearth orbit 1U Cubesat

satellite.The main purpose is to widen the areal for amateur radio communications

Operating temperature: -20o C to 70 o C

Weight (approx): 70 g

Receiver system: –Dual conversion superheterodyne

–1st IF: 21.4 MHz, 2nd IF: 455 KHz –Frequency: 145.800-145.999 MHz

–Receive sensitivity 0.18 uV (12 dB SINAD)

–Selectivity: 12kHz

Transmitter system: –Frequency: 435.000-438.000 MHz

–RF Power Output: 150 mW

–Modulation: F3E (FM)

–Max deviation: ±6 kHz

–Spurious emission: -60dB

Activation: 67 Hz CTCSS tone



LY75RMD




Palydovas

10/19/13

LituanicaSAT-1 prezentacijaLY75RMD

14

FM Voice Repeater

Secondary OBC

VGA Camera/Beacon

GomSpace NanoPower P31u

Primary OBC

(ARM CortexM4)

Motherboard With

Antennae DeploymentMechanism

UHF/VHF Tranceiver

He-100

Made in Lithuania Monocrystal

Si Based SC

Pumpkin based structure

7075 TO

UHF

VHF



LY1LM Lauris, EU4CK Genadij, LY3LP Klemensas ,

DL7VFM Achim, LY3H Žilvinas ir LY2EN Simonas



http://www.delfi.lt/mokslas/mokslas/lituanicasat-1-zinia-lietuvai-is-kosmoso-perdavines



Autoportretas

LY75RMD




LY75RMD




Vibraciniai testai

LY75RMD




Termo-vakuuminiai testai

LY75RMD




LituanicaSAT-1 kelias į kosmosą

10/19/13


Kosmonautas išlydi LituanicaSAT-1 paskutinei kelionei...



LituanicaSAT-1 kelias į kosmosą

10/19/13


JEM robotinė ranka pasirengusi paleisti palydovus...

(žiūrėti kaip atrodo tikras paleidimas)

http://www.youtube.com/watch?v=G_Br2V3QokI

http://www.youtube.com/watch?v=G_Br2V3QokI



LituanicaSAT-1 vizualizacija

Ačiū už dėmesį

10/19/13


[email protected]

www.FB.com/LituanicaSAT-1

www.kosmonautai.lt

lituanicasat-1 pristatymas ly75rmd

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