Educational CubeSats

CubeSat Geoscan 1U

0.8-1.0 kg assembled weight
1.33 kg max weight including payload
110х110х113.5 mm dimensions folded

Geoscan 1U specifications

Assembled weight (without a payload)	0.8-1 kg
Maximum weight including а payload	1.33 kg
Dimensions folded	110х110х113.5 mm
Maximum weight of a payload	0.33…0.50 kg
Available volume for a payload	82x82x60 mm
Available supply for a payload	12 V / 2 A 5 V / 3 A
Payload average power at LEO	500 mV
Available maximum output of a payload	Up to 35 W
Storage battery capacity	40 W*h
Battery type	Li-ion 2S 7200 mAh
Battery nominal voltage	7.4 V
Number of solar panels	5 pcs
Peak output produced on 1 solar panel in LEO	1.5 W
Onboard interface	I²C, UART
Payload interface	UART / CAN / RS-485
Antenna type	UHF dual dipole X-band patch antenna
Control radio channel frequency	435-438 MHz, frequency modulation
Data transmission speed through radio channel	1200, 2400, 4800, 9600, 14400, 19200 bit/s
High-speed transmitter frequency	10.4 GHz, frequency modulation
High-speed radio channel data rate	Up to 1 Mbit/s
Stabilization system	Electromagnetic
Orientation determination	2 three-axis magnetometers, 6 solar sensors
Orientation modes	Stabilization of rotation, pointing to the Sun or to the Earth coordinates according to a program
Accuracy of orientation system	5º
Design lifetime	At least 2 years

Geoscan 3U specifications

№	Specification	Modification 1	Modification 2
1	Assembled weight (without a payload)	under 1.9 kg	under 2.4 kg
2	Maximum weight including а payload	6 kg
3	Dimensions folded (with separation system locked)	110х110х340.5 mm
4	Maximum weight of a payload	4.1 kg	3.6 kg
5	Available volume for a payload	90×90×170 mm
6	Available supply for a payload	stabilized 5 V / 2 А stabilized 3.3 V / 2 А unstabilized 7…8.4 V / 2А
7	Payload average power at LEO (specified for a specific orbit)	3 W
8	Available maximum output of a payload (specified for a specific orbit)	up to 15 W for one payload (expansion up to 60 W is available)
9	Storage battery capacity	40 W*h
10	Battery type	Li-ion 2S 7200 mAh
11	Battery nominal voltage	7.4 V
12	Number of solar panels	up to 13 pcs.
13	Peak output produced on 1 solar panel in LEO	5.5 W
14	Onboard interface	CAN
15	Payload interface	CAN / UART / SPI
16	Control radio channel frequency	435-438 MHz, frequency modulation
17	Data transmission speed through radio channel	9600, 19200 bit/s
18	High-speed transmitter frequency	-	10.4 GHz, phase modulation
19	High-speed radio channel data rate	-	up to 10 Mbit/s
20	Antenna type	dual UHF dipole	dual UHF dipole; X-band – antenna array
21	Stabilization system	magnetic coils	magnetic coils, flywheels
22	Orientation modes	B-dot algorithm, pointing to the Sun or to the Earth coordinates according to a program
23	Accuracy of orientation system	up to 3º
24	Design lifetime	over 2 years

CubeSat Geoscan 3U

2.4 kg assembled weight
6 kg max weight including payload
110х110х340,5 mm dimensions folded

CubeSat payloads

remote sensing cameras;
small scientific instruments.

Scientific instruments are used in order to monitor electron, proton and nucleus flows, ultraviolet, and gamma rays in the Earth’s upper atmosphere and also for carrying out biological experiments.

The tasks for the CubeSats

training school and university students in the design, programming and assembly of real spacecrafts;
following their test flights in LEO (low Earth orbit);
organising competitions and experiments via the amateur radio frequency network.

The CubeSats Geoscan 1U and Geoscan 3U are being developed within the parameters of the Russian educational project for the creation of satellite constellation (Space-π) for student career guidance which is supported by the Innovation Assistance Foundation.