Sevent Space — Empowering Infinite Orbital Missions with Solar-Powered Precision
Advanced attitude control systems engineered for the next generation of small satellite missions. Pure solar power. Zero propellant. Unlimited operational life.
Core Technology
The Technology: Engineering Attitude Control Without Propellant
Sevent Space has pioneered propellant-free Attitude Determination and Control Systems (ADCS) that leverage fundamental physics principles to provide precise three-axis stabilization for small satellites. Our dual-technology approach combines magnetorquers and reaction wheels, both powered entirely by solar energy, eliminating the need for chemical propellants that traditionally limit mission duration.
Magnetorquers interact directly with Earth's magnetosphere, generating controlled torques by passing current through precisely wound coils. This elegant solution harnesses the planet's natural magnetic field to adjust satellite orientation without consuming any physical propellant. Complementing this system, our ultra-efficient reaction wheels provide gyroscopic stability through momentum exchange, offering rapid response and fine-pointing accuracy measured in arc-seconds.
The integration of these technologies creates a robust, redundant control architecture capable of supporting missions ranging from Earth observation to communications relay. With power drawn exclusively from solar panels, operational constraints shift from propellant mass budgets to electrical management—a paradigm that extends mission life from months to decades while reducing launch mass and complexity.
How Our Solar-Powered ADCS Works
Magnetorquers: Earth's Field as Your Actuator
Three orthogonal electromagnetic coils generate precise magnetic dipole moments that interact with Earth's geomagnetic field. By modulating current through these coils, we produce torques along any desired axis, enabling continuous attitude adjustment without propellant expenditure. Control algorithms compensate for field variations across orbital positions, ensuring consistent performance from LEO to mid-inclination orbits.
Reaction Wheels: Momentum Management
High-precision reaction wheels store angular momentum, allowing rapid reorientation and fine pointing. When the wheel accelerates, the satellite rotates in the opposite direction per conservation of momentum. Our wheels feature low-friction bearings and optimized rotor geometries, achieving lifetimes exceeding 15 years with minimal power draw. Magnetorquers desaturate accumulated momentum, creating a closed-loop system requiring zero consumables.
Sustainability
Sustainability: Greener Space Missions for a Cleaner Orbital Environment
Unlimited Operational Life
Without propellant depletion constraints, missions continue as long as electronics and solar panels function—typically 10-15+ years versus 2-5 years for chemical systems.
Zero Toxic Propellants
Eliminates hydrazine, xenon, and other hazardous chemicals from manufacturing, integration, launch, and end-of-life disposal phases, reducing environmental impact across the mission lifecycle.
Reduced Launch Mass
Propellant-free architecture cuts ADCS mass by 30-50%, allowing more payload capacity or smaller launch vehicles—both pathways to reduced carbon footprint per mission.
Orbital Debris Mitigation
Extended mission life means fewer replacement satellites, reducing launch frequency and associated space debris. Solar-powered systems support active deorbit maneuvers at end-of-life.
Our commitment to sustainability extends beyond eliminating propellants. Every component is designed for longevity, reliability, and minimal environmental impact. We support the global space community's transition toward responsible, long-duration missions that preserve the orbital environment for future generations while maximizing scientific and commercial returns on investment.
Performance Comparison: Solar-Powered vs. Chemical Propulsion
The advantages of propellant-free ADCS become clear when comparing key performance metrics against traditional chemical propulsion systems. Our solar-powered approach delivers superior mission duration, lower mass penalties, and simplified operations—critical factors for cost-effective small satellite missions.
This comparison demonstrates why leading small satellite operators are transitioning to solar-powered ADCS. The mass savings alone enable additional payload capacity or smaller launch vehicles, while the extended operational life dramatically improves return on investment. For constellation missions requiring dozens or hundreds of satellites, these advantages multiply exponentially.
Compatibility: Modular Architecture for Swarm Intelligence
Ultra-Small Satellite Integration
Our ADCS units are engineered with modularity at their core, supporting CubeSat standards from 1U to 16U as well as custom small satellite platforms up to 100 kg. Standardized mechanical and electrical interfaces enable rapid integration with minimal customization, reducing development timelines and non-recurring engineering costs.
Each unit features I2C and CAN bus communication protocols, interoperable with industry-standard onboard computers and power systems. Thermal design accommodates orbital environments from LEO to GEO, with operational temperature ranges from -40°C to +85°C. Our plug-and-play philosophy extends to software, with flight-proven attitude control algorithms and customizable pointing modes delivered as part of the package.
Constellation-Ready Design
For swarm and constellation missions, our ADCS provides the precision coordination required for formation flying, distributed sensing, and mesh networking applications. Time-synchronized control loops enable satellites to maintain relative positions within meters, supporting synthetic aperture techniques and multi-point data collection.
Scalability is built into every design decision. Whether deploying 10 satellites or 500, our modular approach ensures consistent performance, simplified logistics, and reduced per-unit costs through economies of scale. Ground software supports fleet management, allowing operators to monitor and command entire constellations from a unified interface.
Swarm Technology: 50-Satellite Synchronized Formations
The future of space-based observation and communication lies in coordinated satellite swarms—distributed networks of dozens or hundreds of small satellites operating as a unified system. Sevent Space ADCS technology enables this vision by providing the precise, reliable attitude control necessary for formation flying and synchronized operations across large constellations.
01
Coordinated Deployment
Satellites deploy sequentially from launch vehicle, each using magnetorquers to establish initial orientation and begin formation acquisition.
02
Formation Establishment
Reaction wheels enable rapid repositioning while ground commands initialize relative positioning algorithms. Inter-satellite communication establishes network topology.
03
Synchronized Operations
Entire swarm operates as distributed sensor array, maintaining precise relative positions for interferometry, wide-area imaging, or relay network applications.
04
Adaptive Reconfiguration
Formation geometry adjusts dynamically based on mission requirements, with each satellite contributing to collective pointing and maintaining network connectivity.
Our magnetic control systems enable this level of coordination without propellant consumption, supporting missions measured in decades rather than years. The "veil" of satellites moves as one, each unit contributing its sensors and communications to create capabilities impossible with single platforms—all powered by sunlight and Earth's magnetic field.
Space Heritage
Space Heritage: Proven Performance in Extreme Environments
Every Sevent Space ADCS undergoes rigorous qualification testing that exceeds industry standards for small satellite components. Our comprehensive test program validates performance across the full spectrum of on-orbit environmental conditions, ensuring mission success from launch through end-of-life operations.
Thermal Vacuum Testing
Components survive 100+ thermal cycles from -55°C to +95°C in hard vacuum (<10⁻⁶ Torr), demonstrating operation across orbital day/night transitions and varying sun angles.
Vibration & Shock
Qualification to 14.1 Grms random vibration and 1500G shock loads ensures structural integrity during launch on any commercial vehicle including Falcon 9, Electron, and Vega-C.
Radiation Tolerance
Total ionizing dose testing to 30 krad(Si) with latch-up immunity verification confirms long-duration operation in LEO and MEO radiation environments without performance degradation.
EMC/EMI Compliance
Electromagnetic compatibility testing per MIL-STD-461 ensures our systems neither generate interference nor suffer susceptibility to onboard electronics, maintaining signal integrity.

Flight Heritage: Sevent Space ADCS units have accumulated over 75,000 hours of on-orbit operation across multiple missions, with zero in-flight failures. Our systems have supported Earth observation, communications, and technology demonstration missions in orbits ranging from 400 km to 1200 km altitude.
This proven reliability stems from conservative design practices, extensive analysis, and comprehensive testing. We maintain full traceability from component selection through integration, with detailed test reports and certificates of conformance provided for every flight unit. Our quality management system is AS9100D certified, ensuring consistent processes and continuous improvement.
Engineering the Muscle and Brain of Future Satellite Constellations
Integrated Control Intelligence
Sevent Space ADCS represents more than hardware—it's the central nervous system of modern small satellites. Our integrated attitude determination and control systems combine sensors, actuators, and flight software into a cohesive solution that serves as both the "muscle" executing maneuvers and the "brain" making autonomous decisions.
Onboard star trackers, magnetometers, and gyroscopes feed real-time state estimates to control algorithms running on radiation-hardened processors. Machine learning techniques enable adaptive control that optimizes performance as orbital conditions change, reducing ground intervention and enabling truly autonomous operations.
0.05°
Pointing Accuracy
Arc-minute precision for Earth observation and optical communications
15+
Years Mission Life
Propellant-free operation limited only by electronics longevity
50%
Mass Reduction
Compared to equivalent chemical propulsion systems
100%
Solar Powered
Zero consumables, unlimited operational cycles
Partner with Sevent Space
Whether you're developing a single satellite demonstration mission or a 500-satellite constellation, Sevent Space delivers the attitude control technology that makes your mission possible. Our propellant-free ADCS solutions provide the reliability, longevity, and precision required for next-generation space applications while reducing costs and environmental impact.
Our engineering team works closely with customers from concept through launch and beyond, providing technical consultation, customization services, and ongoing support. We understand that every mission is unique, and our modular architecture adapts to your specific requirements while maintaining the proven performance of our core technology.
Technical Consultation
Schedule a detailed discussion with our systems engineers to explore how our ADCS integrates with your satellite design and mission requirements.
Request Documentation
Download full technical specifications, interface control documents, test reports, and integration guides for immediate evaluation.
Custom Solutions
Explore customization options for specialized missions, including tailored control algorithms, modified form factors, and constellation-specific features.
Join the growing community of satellite operators who have chosen Sevent Space to power their missions. Together, we're building the infrastructure for humanity's future in space—one solar-powered satellite at a time.
An initiative of Sevent Technologies, part of the Kalakbayson group