FLIGHT-GRADE FSW • DO-178C LEVEL A • NASA NPR 7150.2 BASELINE

SPACEPULSE™

Autonomous Spacecraft GNC Firmware & Deterministic Flight Grade Aerospace Physical Governor

Modern satellite mega-constellations and deep space missions operate far beyond the loop of ground station teleoperation. While autonomous AI planners excel at macro logistics and swarm tasking, stochastic neural models cannot be given direct thruster or flight-control authority.

SpacePulse solves the aerospace autonomy bottleneck. Operating as a deterministic, flight-grade physical governor in bare-metal #![no_std] Rust, SpacePulse sits strictly between autonomous cognitive software and flight actuators. It mathematically verifies closed-form orbital invariants, enforces approach cones, protects propellant budgets, and prevents unphysical maneuvers in real time.

DETERMINISM: WCET < 100 μs (Zero Dynamic Heap)
TARGET SILICON: SPARC V8 (LEON3/4) • Cortex-R5 • PolarFire RISC-V
RADIATION TOLERANCE: Bitwise TMR • SEC-DED Scrubbing
FLIGHT BASELINE: DO-178C Level A • ECSS • CCSDS 133.0
SPACEPULSE GNC COCKPIT // SE(3) RENDEZVOUS & PROXIMITY TELEMETRY
PHYSICAL GOVERNOR: ENFORCED [100 Hz CYCLIC]
SAA RADIATION GEOFENCE TMR Scrubbing: 1000 Hz CHASER (SWARM NODE 04) Alt: 550 km • Incl: 97.4° 1. COGNITIVE LAYER (AI MISSION PLANNER) PROPOSED: Delta-V Transfer [2.5, 0.0, 0.0] m/s Target: Station-keeping maneuver 2. DETERMINISTIC PHYSICAL GOVERNOR • Propellant Mass Budget: VERIFIED (Δv Safe) • Keep-Out Corridor (≥ 250m): VERIFIED • Wheel Momentum Envelope: FLIGHT SAFE 3. CERTIFIED FLIGHT ACTUATOR DISPATCH RCS Thruster Drivers • Reaction Wheel Commands Worst-Case Execution Time: 84.6 μs
FAST LOOP RATE:
100 Hz Deterministic
EXECUTION BOUND:
WCET < 100 μs Guaranteed
RADIATION SCRUBBING:
Bitwise 2-of-3 TMR
HEAP INTEGRITY:
0 Bytes (Zero Dynamic Heap)
MISSION RISK MITIGATION

Why AI Planners Cannot Have Direct Actuator Authority

Autonomous mega-constellations cannot rely on human ground-station intervention. But giving neural models unvetted control of physical thrusters introduces catastrophic mission risk.

THE STOCHASTIC RISK

AI Hallucinations in Flight

Autonomous LLMs and cognitive agents can miscalculate orbital perturbations, request unphysical slew paths through blinding solar keep-out zones, or exhaust fuel reserves in singular maneuvers. A single unvetted burn can destroy an entire spaceflight asset.

THE DETERMINISTIC SHIELD

The SpacePulse Physical Governor

SpacePulse forms an unyielding boundary. Every high-level command is intercepted and mathematically validated against instantaneous power budgets, structural thermal constraints, propellant mass reserves, and relative collision drift envelopes.

FAIL-OPERATIONAL

Cybernetic Fallback Co-Pilot

When an unsafe maneuver is vetoed, SpacePulse does not simply freeze. Its embedded fallback co-pilot automatically synthesizes a certified, physically optimal recovery maneuver—ensuring the spacecraft remains operational, stable, and power-positive.

AVIONICS ARCHITECTURE

Integrated Flight Capabilities

From deterministic 6-DOF attitude kinematics to radiation fault-tolerance across high-radiation orbital passages.

1. Deterministic 6-DOF Attitude Kinematics

Full quaternion attitude kinematics avoiding gimbal lock entirely. Provides exact 6-DOF docking corridor monitoring combining approach cones, angular velocity limits, and reaction wheel torque limits.

2. 4-Rate Cyclic Executive Scheduler

Static rate-monotonic executive executing 100 Hz rate-gyro loops, 10 Hz attitude determination, 1 Hz orbital ephemeris propagation, and 0.1 Hz telemetry and housekeeping broadcasts.

3. Radiation Hardening & TMR Scrubbing

Bitwise 2-out-of-3 Triple Modular Redundancy (TMR) and SEC-DED Hamming error detection. Memory scrubbing rates dynamically scale up to 1000 Hz during orbital passage through high-radiation environments.

4. Autonomous Collision Avoidance

Automated Time to Closest Approach (TCA) and probability of collision solvers that compute fuel-optimal evasive burns against space debris without requiring ground station uplink.

5. Rendezvous & Swarm Station-Keeping

Relative orbital element tracking and closed-form relative motion dynamics for multi-satellite constellation station-keeping and safe passive drift during proximity operations.

6. CCSDS Telecom & Payload Telemetry

Fully compliant with international CCSDS Space Packet Protocols and frame synchronization. Includes deterministic payload telemetry pipelines for high-throughput scientific instrumentation.

FLIGHT QUALIFICATION

Tested Across Flight-Grade Silicon

Engineered in strict #![no_std] Rust with zero dynamic memory allocation on the critical flight path.

TARGET SILICON COMPILATION TARGET FLIGHT PLATFORM MISSION ROLE
SPARC V8 (LEON3 / LEON4) sparc-unknown-none-elf Cobham Gaisler GR712RC / GR740 Deep-Space Probes, Civil Science Payloads, Class A Onboard Computers
ARM Cortex-R4 / R5 / R7 armv7r-none-eabi TI TMS570LC4357 / Xilinx Zynq UltraScale+ Real-Time GNC Actuator Control Nodes, High-Rate Gyro Loops
ARM Cortex-M4 / M7 thumbv7em-none-eabihf Microchip SAMV71Q21RT (Rad-Tolerant) SmallSat & CubeSat Swarm Autonomous Flight Computers
RISC-V (RV32 / 64IMAC) riscv32imac-unknown-none-elf NOEL-V / Microchip PolarFire SoC Next-Gen Open Radiation-Hardened Aerospace Systems
INTEROPERABILITY STANDARD

Zero-Copy C-ABI & NASA cFS Bridge

Directly embeddable into NASA Core Flight System (cFS), RTEMS, or commercial flight software architectures (include/spacepulse.h).

include/spacepulse.h — NASA cFS / RTEMS ZERO-COPY FLIGHT TASK
WCET < 100 μs VERIFIED
/* =========================================================================
 * SPACEPULSE FLIGHT SOFTWARE EXECUTIVE — NASA cFS TASK EMBEDDING
 * Target: Spaceflight Avionics Host (LEON3 / Cortex-R5)
 * ========================================================================= */
#include "spacepulse.h"
#include <stdio.h>

void SpacePulse_cFS_App_Task(void) {
    SpacePulseAgenticExecutive* pExecutive = NULL;
    
    // 1. Allocate and initialize SpacePulse executive
    SpacePulseStatus status = spacepulse_agent_create(&pExecutive);
    if (status != SpacePulseStatus_Success) return;

    // 2. Define satellite orbit & health state
    KeplerianStateFFI orbit = {
        .semi_major_axis_km = 6878.137,
        .eccentricity       = 0.001,
        .inclination_rad    = 0.90,
    };
    SpacecraftHealthState health = {
        .battery_soc_pct = 98.0f,
        .bus_voltage_v   = 28.0f,
    };

    ExecutiveCycleOutput output;
    
    // 3. Step 100 Hz deterministic flight loop (< 100 µs execution)
    status = spacepulse_agent_step(pExecutive, &orbit, NULL, 0, &health, 0.01, &output);
    if (status == SpacePulseStatus_Success) {
        printf("[SPACEPULSE OK] Governor Verified • Actuators Commanded\n");
    }

    spacepulse_agent_destroy(pExecutive);
}
AEROSPACE TRANSFER • DUAL-USE LICENSING • CONSTELLATION FLIGHT SOFTWARE

Acquire or License the SpacePulse™ FSW

SpacePulse is a completed, flight-ready software asset engineered by Saiwalo Labs. It is packaged with hardened `#![no_std]` Rust crates, multi-rate cyclic executives, NASA cFS headers, and automated hardware-in-the-loop (HIL) test suites.

Available for outright intellectual property acquisition, exclusive commercial constellation licensing, or strategic aerospace integration by satellite primes, defense commands, and deep-space mission operators.

Direct founder discussion with Jay Shaver, Principal Engineer & Founder. Mutual NDA required for complete flight qualification bundles, HIL test vectors, and private repository access.