#!/usr/bin/env python3 """ Spacecraft Systems Verification Checklist Generator Author: Project Starlight Engineering Team Version: 1.0 """ import json import math import datetime from typing import Dict, List, Optional, Any from dataclasses import dataclass, asdict import itertools import collections @dataclass class VerificationStep: """Individual verification step with criteria.""" step_id: str description: str method: str tools_required: List[str] duration_minutes: int pass_criteria: str fail_threshold: str @dataclass class SystemChecklist: """Complete system verification checklist.""" system_name: str criticality_level: str # Critical, High, Medium, Low verification_steps: List[VerificationStep] personnel_responsible: List[str] total_duration: int prerequisite_checks: List[str] class SpacecraftVerificationGenerator: """Generate comprehensive spacecraft verification checklists.""" def __init__(self): self.systems = { "propulsion": self._generate_propulsion_checklist(), "life_support": self._generate_life_support_checklist(), "navigation": self._generate_navigation_checklist(), "communication": self._generate_communication_checklist(), "safety_mechanisms": self._generate_safety_checklist() } def _generate_propulsion_checklist(self) -> SystemChecklist: """Generate propulsion system verification checklist.""" verification_steps = [ VerificationStep( step_id="PROP-001", description="Verify main engine thrust output", method="Static fire test", tools_required=["Thrust stand", "Load cells", "Data acquisition system"], duration_minutes=120, pass_criteria="Thrust within ±2% of rated value for 60 seconds", fail_threshold="Thrust deviation >2% or unstable burn" ), VerificationStep( step_id="PROP-002", description="Check propellant leak detection", method="Pressure decay test", tools_required=["Pressure gauges", "Helium leak detector", "Soap solution"], duration_minutes=45, pass_criteria="No detectable leaks >1x10^-6 atm-cc/sec", fail_threshold="Leak rate exceeds specification" ), VerificationStep( step_id="PROP-003", description="Verify thruster valve response time", method="Actuation timing test", tools_required=["High-speed camera", "Valve controller", "Timing system"], duration_minutes=30, pass_criteria="Valve response <100ms ±10ms", fail_threshold="Response time >110ms or inconsistent" ), VerificationStep( step_id="PROP-004", description="Test propellant tank pressure regulation", method="Pressure regulation test", tools_required=["Pressure transducers", "Regulator test rig", "Data logger"], duration_minutes=60, pass_criteria="Pressure stability ±0.5% of setpoint", fail_threshold="Pressure oscillations >1% or drift >2%" ) ] return SystemChecklist( system_name="Propulsion System", criticality_level="Critical", verification_steps=verification_steps, personnel_responsible=["Propulsion Engineer", "Test Director", "Safety Officer"], total_duration=255, prerequisite_checks=["Fuel loading complete", "Ground support equipment verified", "Safety zones established"] ) def _generate_life_support_checklist(self) -> SystemChecklist: """Generate life support system verification checklist.""" verification_steps = [ VerificationStep( step_id="LIFE-001", description="Verify oxygen generation system", method="Closed-loop test", tools_required=["O2 sensors", "Flow meters", "Pressure gauges", "Gas analyzer"], duration_minutes=180, pass_criteria="O2 generation 0.84kg/day ±5%, purity >99.5%", fail_threshold="Generation rate <79% or purity <99%" ), VerificationStep( step_id="LIFE-002", description="Test CO2 scrubbing efficiency", method="Contamination test", tools_required=["CO2 sensors", "Flow meters", "Timer", "Test gas mixture"], duration_minutes=90, pass_criteria="CO2 removal >95% at 4% input concentration", fail_threshold="Removal efficiency <90% or saturation time <50% of spec" ), VerificationStep( step_id="LIFE-003", description="Verify atmospheric pressure control", method="Pressure regulation test", tools_required=["Barometric sensors", "Control system interface", "Data logger"], duration_minutes=60, pass_criteria="Pressure maintained at 101.3kPa ±1kPa", fail_threshold="Pressure excursions >2kPa or control oscillations" ), VerificationStep( step_id="LIFE-004", description="Test water reclamation system", method="Water quality analysis", tools_required=["Water quality tester", "Flow meters", "Contamination sensors"], duration_minutes=120, pass_criteria="Water recovery >90%, potable quality per NASA standards", fail_threshold="Recovery <85% or quality exceeds contamination limits" ) ] return SystemChecklist( system_name="Life Support System", criticality_level="Critical", verification_steps=verification_steps, personnel_responsible=["Life Support Engineer", "Environmental Systems Tech", "Medical Officer"], total_duration=450, prerequisite_checks=["System leak check complete", "Sensor calibration verified", "Emergency protocols reviewed"] ) def _generate_navigation_checklist(self) -> SystemChecklist: """Generate navigation system verification checklist.""" verification_steps = [ VerificationStep( step_id="NAV-001", description="Verify star tracker accuracy", method="Celestial observation test", tools_required=["Star tracker simulator", "Known star catalog", "Position reference"], duration_minutes=90, pass_criteria="Position accuracy <0.001°, identification rate >99%", fail_threshold="Position error >0.002° or ID rate <95%" ), VerificationStep( step_id="NAV-002", description="Test inertial measurement unit (IMU) drift", method="Static drift test", tools_required=["IMU test rig", "Temperature chamber", "Vibration isolation table"], duration_minutes=120, pass_criteria="Gyro drift <0.1°/hr, accelerometer bias <100μg", fail_threshold="Gyro drift >0.2°/hr or accelerometer bias >200μg" ), VerificationStep( step_id="NAV-003", description="Verify GPS receiver functionality", method="Signal simulation test", tools_required=["GPS simulator", "Attenuator setup", "Time reference"], duration_minutes=60, pass_criteria="TTFF <60s, position accuracy <10m, tracking >8 satellites", fail_threshold="TTFF >120s or accuracy >20m" ), VerificationStep( step_id="NAV-004", description="Test navigation filter convergence", method="Trajectory reconstruction test", tools_required=["Navigation processor", "Test trajectory data", "Truth reference"], duration_minutes=45, pass_criteria="Convergence time <5min, steady-state error <100m", fail_threshold="Convergence >10min or steady-state error >500m" ) ] return SystemChecklist( system_name="Navigation System", criticality_level="High", verification_steps=verification_steps, personnel_responsible=["Navigation Engineer", "GNC Specialist", "Flight Dynamics Analyst"], total_duration=315, prerequisite_checks=["Alignment procedures complete", "Reference systems calibrated", "Ephemeris data loaded"] ) def _generate_communication_checklist(self) -> SystemChecklist: """Generate communication system verification checklist.""" verification_steps = [ VerificationStep( step_id="COM-001", description="Verify transmitter power output", method="RF power measurement", tools_required=["Power meter", "Spectrum analyzer", "Directional coupler", "Load"], duration_minutes=45, pass_criteria="Power output within ±1dB of specification", fail_threshold="Power deviation >2dB or spurious emissions >-40dBc" ), VerificationStep( step_id="COM-002", description="Test receiver sensitivity", method="Signal-to-noise ratio test", tools_required=["Signal generator", "Noise source", "BER tester", "Attenuators"], duration_minutes=60, pass_criteria="Sensitivity meets spec at BER <10^-5", fail_threshold="Sensitivity degradation >3dB or BER >10^-4" ), VerificationStep( step_id="COM-003", description="Verify antenna pointing accuracy", method="Antenna pattern measurement", tools_required=["Antenna range", "Positioner", "Field probe", "Test transmitter"], duration_minutes=90, pass_criteria="Pointing accuracy <0.5°, beamwidth within spec", fail_threshold="Pointing error >1° or pattern distortion >3dB" ), VerificationStep( step_id="COM-004", description="Test data link throughput", method="End-to-end data test", tools_required=["Data generator", "Protocol analyzer", "Error counter", "Timing equipment"], duration_minutes=30, pass_criteria="Throughput >95% of rated capacity, error rate <10^-6", fail_threshold="Throughput <90% or error rate >10^-5" ) ] return SystemChecklist( system_name="Communication System", criticality_level="High", verification_steps=verification_steps, personnel_responsible=["Communications Engineer", "RF Specialist", "Ground Station Operator"], total_duration=225, prerequisite_checks=["Antenna deployment verified", "Frequency coordination complete", "Link budget analysis approved"] ) def _generate_safety_checklist(self) -> SystemChecklist: """Generate safety mechanisms verification checklist.""" verification_steps = [ VerificationStep( step_id="SAFE-001", description="Test emergency power shutdown", method="Emergency shutdown simulation", tools_required=["Emergency button", "Power monitoring system", "Timer", "Current probes"], duration_minutes=30, pass_criteria="Shutdown completes <5s, isolation confirmed", fail_threshold="Shutdown time >10s or partial isolation" ), VerificationStep( step_id="SAFE-002", description="Verify fire suppression system", method="Fire simulation test", tools_required=["Fire test rig", "Temperature sensors", "Gas detectors", "Control system"], duration_minutes=45, pass_criteria="Suppression activation <10s, temperature control achieved", fail_threshold="Activation delay >20s or suppression ineffective" ), VerificationStep( step_id="SAFE-003", description="Test cabin pressure relief system", method="Overpressure test", tools_required=["Pressure relief valves", "Pressure gauges", "Flow meters", "Safety barriers"], duration_minutes=60, pass_criteria="Relief activation at specified pressure, flow rate adequate", fail_threshold="Activation pressure out of tolerance or flow insufficient" ), VerificationStep( step_id="SAFE-004", description="Verify emergency beacon activation", method="Beacon transmission test", tools_required=["Beacon tester", "RF analyzer", "GPS simulator", "Power supply"], duration_minutes=30, pass_criteria="Beacon activates automatically, transmits correct ID and position", fail_threshold="Activation failure or incorrect transmitted data" ) ] return SystemChecklist( system_name="Safety Mechanisms", criticality_level="Critical", verification_steps=verification_steps, personnel_responsible=["Safety Engineer", "Emergency Systems Tech", "Mission Safety Officer"], total_duration=165, prerequisite_checks=["Safety systems powered", "Emergency procedures reviewed", "Crew evacuation plans verified"] ) def generate_master_checklist(self) -> Dict[str, Any]: """Generate complete spacecraft verification master checklist.""" total_duration = sum(checklist.total_duration for checklist in self.systems.values()) master_checklist = { "spacecraft_verification_checklist": { "generation_date": datetime.datetime.now().isoformat(), "version": "1.0", "total_verification_time_minutes": total_duration, "estimated_duration_days": math.ceil(total_duration / (8 * 60)), # 8-hour days "critical_systems_count": len([s for s in self.systems.values() if s.criticality_level == "Critical"]), "systems": {} } } for system_name, checklist in self.systems.items(): system_data = { "system_name": checklist.system_name, "criticality_level": checklist.criticality_level, "personnel_responsible": checklist.personnel_responsible, "total_duration_minutes": checklist.total_duration, "prerequisite_checks": checklist.prerequisite_checks, "verification_steps": [] } for step in checklist.verification_steps: step_data = { "step_id": step.step_id, "description": step.description, "method": step.method, "tools_required": step.tools_required, "duration_minutes": step.duration_minutes, "pass_criteria": step.pass_criteria, "fail_threshold": step.fail_threshold, "verification_status": "PENDING" } system_data["verification_steps"].append(step_data) master_checklist["spacecraft_verification_checklist"]["systems"][system_name] = system_data return master_checklist def generate_execution_plan(self) -> Dict[str, Any]: """Generate optimized execution plan for verification.""" # Group systems by criticality and dependencies critical_systems = [name for name, system in self.systems.items() if system.criticality_level == "Critical"] execution_phases = { "phase_1_critical": { "systems": critical_systems, "duration_minutes": sum(self.systems[sys].total_duration for sys in critical_systems), "personnel_required": list(set(itertools.chain.from_iterable( [self.systems[sys].personnel_responsible for sys in critical_systems] ))), "phase_description": "Critical systems verification - mandatory before flight" }, "phase_2_high_priority": { "systems": [name for name, system in self.systems.items() if system.criticality_level == "High"], "duration_minutes": sum(self.systems[sys].total_duration for sys in [name for name, system in self.systems.items() if system.criticality_level == "High"]), "personnel_required": list(set(itertools.chain.from_iterable( [self.systems[sys].personnel_responsible for sys in [name for name, system in self.systems.items() if system.criticality_level == "High"]] ))), "phase_description": "High priority systems verification" } } return { "execution_plan": { "total_phases": len(execution_phases), "parallel_execution_possible": True, "critical_path_minutes": max(phase["duration_minutes"] for phase in execution_phases.values()), "phases": execution_phases } } def main(): """Generate spacecraft verification checklist.""" print("🚀 Spacecraft Systems Verification Checklist Generator") print("=" * 60) generator = SpacecraftVerificationGenerator() # Generate master checklist master_checklist = generator.generate_master_checklist() # Generate execution plan execution_plan = generator.generate_execution_plan() # Output results print(f"✅ Generated checklist for {len(master_checklist['spacecraft_verification_checklist']['systems'])} systems") print(f"⏱️ Total verification time: {master_checklist['spacecraft_verification_checklist']['total_verification_time_minutes']} minutes") print(f"📅 Estimated duration: {master_checklist['spacecraft_verification_checklist']['estimated_duration_days']} days") print(f"🔴 Critical systems: {master_checklist['spacecraft_verification_checklist']['critical_systems_count']}") # Save to JSON file with open("spacecraft_verification_checklist.json", "w") as f: json.dump(master_checklist, f, indent=2) with open("verification_execution_plan.json", "w") as f: json.dump(execution_plan, f, indent=2) print("\n📄 Files generated:") print(" - spacecraft_verification_checklist.json") print(" - verification_execution_plan.json") return { "success": True, "files_created": ["spacecraft_verification_checklist.json", "verification_execution_plan.json"], "systems_verified": len(master_checklist['spacecraft_verification_checklist']['systems']), "total_steps": sum(len(system['verification_steps']) for system in master_checklist['spacecraft_verification_checklist']['systems'].values()) } if __name__ == "__main__": result = main() print(f"\n🎯 Execution completed: {result['success']}") print(f"📊 Total verification steps: {result['total_steps']}")