SR-NANO-BUS platform

SatRevolution has provided and personalized a scalable satellite platform SR-NANO-BUS, which includes:

• 1U Mechanical Structure

• Electrical Power System

• RF Communication Module

• Basic On-board Computer

The platform is described based on datasheets provided by the manufacturer. More details are available at https://cubesatworld.com/.

1U mechanical structure

Single unit cubesat structure that fulfills international standards. It is designed to provide the necessary mechanical durability and thermal conductivity .

Properties

Size: 109.7 x 109.7 x 113.5 [mm3]

Mass: 96 g

Material: Aluminum 7075 alloy

Manufacturing details: CNC manufactured, hard anodized and oxidized

Power switches: 3 safety deployment switches and 1 RBF pins

Separation springs: 2

EPS module

Electrical Power System is responsible for conversion of energy acquired by the solar panels and distribution of the power to the payload and platform subsystems, such as OBC and CM.

Features

2 redundant power buses

Battery supervisory circuit

Thermal control of circuit and batteries

Details

Fully redundant and stabilized output voltages: 12 V (1.6 A), 3.3 V (1 A), 1.8 V (0.1 A).

Single battery capacity: 3200 mAh

Pack size: 3 batteries

Max stored energy: 80 Wh

Properties

Mass: 590 g (with pack of batteries)

Size: 96x96x25 [mm3]

CM module

RF communication module is responsible for TT&C uplink and downlink. The module consists of 2 UHF transceivers.

Features

Operational frequency: 433 MHz

Transmission data rate: 9600 b/s

Range: 400-500 km

TX modulation: 2GFSK 9600 bps, AFSK 1200 bps

RX modulation: 2GFSK 9600 bps

Main components: Ultra-Low Power microcontroller MSP430FR Silicon Laboratories Si446x family RF radio IC

Details

Supply voltage: 12 V, 3.3 V

UHF max RF power output: 30 dBm

Max current consumption at RX: 15 mA

Max current consumption at TX: 250 mA

Normal current consumption at TX: 117 mA

Properties

Mass: 37 g

Size: 96x96x6.6 [mm3]

OBC module

Basic version of On-board Computer. Cubesat subsystem for payload control and communication with medium computing power and external MRAM memory.

Features

Main processor: MSP430FR5994, 16MHz, 256KB FRAM, Ultra Low-Power Modes

Inner module communications (IMC)

Details

Current consumption: 120 μA/MHz (processor) + other components for payload control

Power switches on 3.3 V and 12 V

Connector FX10A-168

Properties

Mass: 37 g

Size: 96x96x5 [mm3]