3U PLATFORM

GOMSPACE 3U PLATFORM

The GomSpace 3U platform is a standardised platform provided with all the essentials needed to operate your payload. The platform has a very compact design, providing the best solution to keep launch costs as small as possible, but still providing enough volume for most small payloads. The GomSpace platform was first used on the GomSpace GOMX-3 mission and has since obtained extensive flight heritage.

The GomSpace 3U platform is well suited for:

Technical demonstrations
Radio communications missions
Signal intelligence missions
Other missions with small payloads

The GomSpace 3U platform provides: electrical power management, deployable solar panels, ADCS, TMTC, OBC functionalities and S-band data links.
4 DOF cold gas propulsion, star tracker, and/or X-band datalink can be provided on request.

More information can be found in the GomSpace Platform White Paper.

3U PLATFORM

KEY FEATURES	3U
Bus Mass	3.5 kg
Max Payload Mass	1.5 kg
Payload Volume	1.5 U
Solar Array Orbit Average Power (OAP) (Orbit Dep)	4.9 - 22.3 W
Power Bus	3.3V and 5V up to 2A
Battery Capacity	38 Wh
Determination Error Sun/Eclipse	2° / 10°
Pointing Error Sun/Eclipse	2.5° / 10.5°
Max Slew Rate	1.5° / s
Position Knowledge (RMS)	3 m
Data Storage	Up to 120 GB
Data Buses	SpaceWire, CAN, RS422 and TTL level UART
TMTC Communication	Uplink / Downlink: S-band
High Speed Link (HSL) Communication	Uplink: S-band / Downlink: S-band
TMTC Data Downlink	Up to 90 kbps
High Speed Link (HSL) Data Downlink (CCSDS Compatible)	From 500 kbps to 6 Mbps (S-band)
High Speed Link (HSL) Data Uplink (CCSDS Compatible)	From 500 kbps to 6 Mbps (S-band)
Propulsion (optional)	10 m/s
Security	AES256 Encryption and Authentication
Design Lifetime	5 years in LEO

APPLICATIONS / REFERENCE MISSIONS

GOMX-3

3U satellite in collaboration with ESA

Mission Overview:

Demonstrating advanced pointing while receiving both L-Band and ADS-B signals:

X-band downlink
2nd generation ADS-B receiver
Software defined radio techniques
Robust ADCS capability

Launched from ISS in 2015

Bus Configuration

3U Platform
Active 3-axis control
Software defined radios

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FACSAT-1

3U Nanosatellite for the Fuerza Aérea Colombian

Mission Overview:

Demonstrating the technological capabilities to build and operate a nanosatellite:

Visual range imaging
Payload with 20 m/pixel resolution
UHF downlink
Robust ADCS capability

Launched in 2018

Bus Configuration

3U Platform
Active 3-axis control
NanoCam Imager

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OSIRIS

Nanosatellite Platform for German Aerospace Center

Mission Overview:

Demonstrating compact optical communication payloads for small spacecrafts in a LEO orbit:

High data rate
Low power consumption
Compact systems design
No frequency spectrum regulation

Launched 2021

Bus Configuration

3U Platform accommodating the
optical payload
High precision pointing
Camera

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