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GOMX 4A, 4B (Ulloriaq)

GOMX 4 [GOMSpace]

GOMSpace's GOMX-4A and 4B are 6U CubeSat for demonstrating key technologies to handle large satellite formations.

GOMSpace builds GOMX-4A for the Danish Ministry of Defence and GOMX-4B for ESA under separate contracts.

GOMX-4A is sponsored by DALO who by this mission will have their first satellite intended to contribute to surveilance of the Artic. The GOMX-4A demonstration is part of an analysis seeking to identify best-practice and future efforts reinforcing the Danish Defense’s surveillance of the Artic within the Kingdom. The satellite has been named Ulloriaq after the word ”star” in the Greenlandic language.

The ESA satellite GOMX-4B has the mission to demonstrate inter-satellite linking and station keeping capabilities; key enabling technologies for future nanosatellite constellations.

The two CubeSats will stay linked through a new version of the software-defined radio system demonstrated on GOMX-3, while their relative positions along their shared orbit is controlled up to a maximum 4500 km. The same radio system will also be used for rapid payload data downloads to Earth. Nanospace in Sweden are contributing the highly miniaturised cold-gas thrusters for controlling the orbit, allowing future CubeSat-based constellations to be deployed quickly after launch.

Addition technology payloads include a compact hyperspectral imager called HyperScout, developed by Cosine Research in the Netherlands; a miniaturised startracker from Innovative Solutions In Space, also in the Netherlands; an inhouse ESA experiment to test components for radiation hardness; and an ADS-B antenna for aircraft tracking, developed from the GomSpace system tested on GOMX-3.

Both GOMX 4A and GOMX 4B will be launched together in 2017.

Nation: Denmark
Type / Application: Technology
Operator: GOMSpace (both), Danish Ministry of Defence (#4A), ESA (#4B)
Contractors: GOMSpace
Equipment:
Configuration: CubeSat (6U)
Propulsion: None
Power: Solar cells, batteries
Lifetime:
Mass: +6 kg
Orbit:
Satellite COSPAR Date LS Launch Vehicle Remarks
GOMX 4A (Ulloriaq) - 2017 Jq SLS-2 CZ-2D (2) with Zhangheng 1, ŅuSat 4, ŅuSat 5, GOMX 4B, FengMaNiu 1, Shaonian Xing
GOMX 4B - 2017 Jq SLS-2 CZ-2D (2) with Zhangheng 1, ŅuSat 4, ŅuSat 5, GOMX 4A, FengMaNiu 1, Shaonian Xing