Modular Deployment Sequencer

Modular Deployment Sequencer (MDS) stands above the rest when it comes to precision, reliability, and flexibility in satellite deployment. Designed as the ultimate bridge between launch vehicles and deployer systems, our MDS ensures precise satellite deployment through a dual-redundant system, effectively mitigating single-point risks. Powered by an internal Lithium-Ion battery, it activates upon a valid command from the Launch Vehicle (LV), executing preprogrammed deployment sequences. It signals deployer systems (and deployer doors), ensures satellites deploy at preset times, collects separation confirmations, and relays this data back to the LV for mission assurance.

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Modular & Scalable Design: Tailored for Mega to smaller missions and deployer systems
Reliability Assured: Dual/triple redundant activation and telemetry feedback ensure mission success
Multi-Vehicle Compatibility: Qualified for Dnepr, PSLV, Soyuz, Falcon 9, Vega, and more
Versatile Power Options: Internal or external power configurations available

Dual/triple redundant activation

Traditional Analog “breakwire” interfaces

Allows direct monitoring

Product Specification

Mass	~1kg for four deployers powered from external power up to ~ 2kg for 8 deployers powered from internal power ~3.8 kg for 32 deployers powered from high current battery option
Volume	250x100mm base area (height dependent on no. of modules)
Pulse Power Supply	28V+-4V
Pulse Power Supply Duration	0.1-2s
Activation Pulse Characteristics	– Purely resistive load with galvanic isolation to internal circuitry – Serial switch action with separate ARM and activate pulses. – Dual redundant pulse switches – Typical Activation pulse 28V± 4V of 100ms (<100mA) – “No fire” activation <10V for continuity testing
RF Characteristics	Meets EMI/EMC standards per launch vehicle payload user guides
Digital Interface	Traditional Analog “breakwire” interfaces, RS485, RS422, USART, CAN Bus, Ethernet
LV Telemetry Interface	Direct monitoring: Wire Route physical switches – Always active Controlled by sequencer electronics: 1. Galvanically isolated breakwire switches for deployer state change 2. Data bus options: Telemetry feedback or host-commanded deployment • USART (optional RS422/RS485 isolation) • CAN • SPI (optional galvanic isolation) • Ethernet over shielded twisted pair