""" Post-Launch Monitoring Checklist System Author: Engineering Team Version: 1.0 """ import json import math import datetime from typing import Dict, List, Optional, Any class PostLaunchMonitor: """Comprehensive post-launch monitoring system""" def __init__(self): self.checklist_items = [] self.system_status = {} self.trajectory_data = {} self.abort_conditions = [] self.contingency_plans = {} self.monitoring_log = [] def create_trajectory_verification(self) -> Dict[str, Any]: """Trajectory verification procedures and checkpoints""" return { "launch_window": { "t_plus_0": "Verify launch azimuth and elevation", "t_plus_30": "Confirm initial trajectory vector", "t_plus_60": "Validate first stage separation trajectory" }, "orbital_insertion": { "meo_check": "Main Engine Cutoff verification", "orbit_achieved": "Confirm orbital parameters achieved", "altitude_check": "Verify altitude within tolerance ±50m", "velocity_check": "Verify velocity within tolerance ±0.1 m/s" }, "trajectory_corrections": { "burn_1": "First correction burn execution", "burn_2": "Second correction burn execution", "final_orbit": "Final orbit circularization" }, "tolerances": { "position_tolerance": 100, # meters "velocity_tolerance": 0.5, # m/s "angular_tolerance": 0.1, # degrees "time_tolerance": 5.0 # seconds } } def create_system_monitoring(self) -> Dict[str, Any]: """System status monitoring metrics and thresholds""" return { "propulsion": { "engine_temperature": {"min": 20, "max": 350, "critical": 400}, "fuel_pressure": {"min": 100, "max": 500, "critical": 50}, "oxidizer_pressure": {"min": 100, "max": 500, "critical": 50}, "thrust_level": {"min": 85, "max": 115, "critical": 70} }, "power_system": { "battery_voltage": {"min": 24.0, "max": 29.4, "critical": 22.0}, "solar_current": {"min": 5.0, "max": 50.0, "critical": 2.0}, "power_consumption": {"min": 100, "max": 1000, "critical": 1200}, "bus_stability": {"min": 4.8, "max": 5.2, "critical": 4.5} }, "thermal_control": { "internal_temp": {"min": 5, "max": 40, "critical": 50}, "external_temp": {"min": -40, "max": 80, "critical": 100}, "radiator_temp": {"min": -20, "max": 60, "critical": 80}, "heater_status": {"min": 0, "max": 1, "critical": 2} }, "communications": { "signal_strength": {"min": -80, "max": -30, "critical": -90}, "data_rate": {"min": 1000, "max": 100000, "critical": 500}, "link_quality": {"min": 0.7, "max": 1.0, "critical": 0.5}, "antenna_pointing": {"min": -5, "max": 5, "critical": 10} }, "guidance_navigation": { "position_accuracy": {"min": 0, "max": 10, "critical": 20}, "velocity_accuracy": {"min": 0, "max": 0.1, "critical": 0.2}, "attitude_accuracy": {"min": 0, "max": 0.5, "critical": 1.0}, "gps_lock": {"min": 8, "max": 12, "critical": 4} } } def create_abort_procedures(self) -> Dict[str, Any]: """Abort procedures and decision trees""" return { "immediate_abort_triggers": { "engine_failure": "Any engine failure within first 60 seconds", "trajectory_deviation": "Position error > 500m or velocity error > 5 m/s", "structural_failure": "Any structural integrity breach detected", "fire_detection": "Fire or explosion in any compartment" }, "abort_modes": { "mode_1": { "name": "Launch Abort", "condition": "T+0 to T+120 seconds", "action": "Activate launch escape system, separate from vehicle", "recovery": "Ocean splashdown, recovery team deployment" }, "mode_2": { "name": "Orbital Abort", "condition": "After orbital insertion", "action": "Deorbit burn, reentry sequence", "recovery": "Landing zone recovery, emergency services" }, "mode_3": { "name": "Contingency Abort", "condition": "Partial system failure", "action": "Safe mode activation, minimal operations", "recovery": "Extended mission, ground control intervention" } }, "decision_tree": { "step_1": "Assess system status and failure severity", "step_2": "Determine time window for abort decision", "step_3": "Select appropriate abort mode", "step_4": "Execute abort sequence", "step_5": "Initiate recovery procedures" } } def create_contingency_planning(self) -> Dict[str, Any]: """Contingency planning for various failure scenarios""" return { "engine_failure": { "single_engine": "Throttle remaining engines, adjust trajectory", "multiple_engine": "Abort mission, activate escape system", "all_engine": "Immediate abort, emergency landing" }, "power_system_failure": { "battery_depletion": "Switch to backup power, reduce load", "solar_panel_failure": "Activate battery reserves, critical systems only", "complete_power_loss": "Safe mode, minimal telemetry" }, "communication_failure": { "temporary_loss": "Store data, retry connection", "antenna_failure": "Switch to backup antenna", "complete_loss": "Autonomous operations, pre-programmed sequence" }, "thermal_control_failure": { "overheating": "Reduce power consumption, activate cooling", "freezing": "Activate heaters, reduce exposure", "sensor_failure": "Use backup sensors, estimate temperatures" }, "guidance_failure": { "gps_loss": "Use inertial navigation, star tracker", "gyroscope_failure": "Switch to backup gyros", "complete_guidance_loss": "Safe mode, ground control takeover" }, "structural_integrity": { "minor_damage": "Continue mission with monitoring", "significant_damage": "Abort mission, emergency procedures", "catastrophic_failure": "Immediate abort, escape system" } } def generate_checklist(self) -> List[Dict[str, Any]]: """Generate comprehensive monitoring checklist""" checklist = [] # Trajectory Verification Items trajectory = self.create_trajectory_verification() for phase, items in trajectory.items(): if isinstance(items, dict) and phase != "tolerances": for item, description in items.items(): checklist.append({ "category": "Trajectory Verification", "phase": phase, "item": item, "description": description, "priority": "High", "frequency": "Continuous", "responsible": "Flight Dynamics" }) # System Monitoring Items systems = self.create_system_monitoring() for system, parameters in systems.items(): for param, thresholds in parameters.items(): checklist.append({ "category": "System Monitoring", "system": system, "parameter": param, "thresholds": thresholds, "priority": "High" if param in ["engine_temperature", "battery_voltage"] else "Medium", "frequency": "1 Hz", "responsible": "Systems Engineering" }) # Abort Procedure Items abort = self.create_abort_procedures() for mode, details in abort["abort_modes"].items(): checklist.append({ "category": "Abort Procedures", "mode": mode, "name": details["name"], "condition": details["condition"], "action": details["action"], "priority": "Critical", "frequency": "Continuous", "responsible": "Mission Director" }) # Contingency Planning Items contingencies = self.create_contingency_planning() for failure_type, scenarios in contingencies.items(): for scenario, action in scenarios.items(): checklist.append({ "category": "Contingency Planning", "failure_type": failure_type, "scenario": scenario, "action": action, "priority": "High", "frequency": "As needed", "responsible": "Emergency Response Team" }) return checklist def check_thresholds(self, system: str, parameter: str, value: float) -> Dict[str, Any]: """Check if parameter value is within acceptable thresholds""" systems = self.create_system_monitoring() if system not in systems or parameter not in systems[system]: return {"status": "unknown", "message": "Parameter not found"} thresholds = systems[system][parameter] if value <= thresholds["critical"] or value >= thresholds["critical"]: return { "status": "critical", "message": f"CRITICAL: {parameter} = {value}, threshold = {thresholds['critical']}", "action": "Immediate response required" } elif value <= thresholds["min"] or value >= thresholds["max"]: return { "status": "warning", "message": f"WARNING: {parameter} = {value}, range = [{thresholds['min']}, {thresholds['max']}]", "action": "Monitor closely, prepare contingency" } else: return { "status": "normal", "message": f"OK: {parameter} = {value}", "action": "Continue monitoring" } def log_monitoring_event(self, event_type: str, details: Dict[str, Any]) -> None: """Log monitoring events with timestamp""" event = { "timestamp": datetime.datetime.now().isoformat(), "event_type": event_type, "details": details } self.monitoring_log.append(event) def export_checklist(self, filename: str = "post_launch_checklist.json") -> str: """Export checklist to JSON file""" checklist_data = { "generated": datetime.datetime.now().isoformat(), "version": "1.0", "trajectory_verification": self.create_trajectory_verification(), "system_monitoring": self.create_system_monitoring(), "abort_procedures": self.create_abort_procedures(), "contingency_planning": self.create_contingency_planning(), "checklist_items": self.generate_checklist() } json_content = json.dumps(checklist_data, indent=2) # Write to file with open(filename, 'w') as f: f.write(json_content) return f"Checklist exported to {filename}" # Test implementation def test_monitoring_system(): """Test the monitoring system implementation""" monitor = PostLaunchMonitor() # Test trajectory verification trajectory = monitor.create_trajectory_verification() print("✅ Trajectory verification created") # Test system monitoring systems = monitor.create_system_monitoring() print("✅ System monitoring created") # Test threshold checking result = monitor.check_thresholds("propulsion", "engine_temperature", 450) print(f"✅ Threshold check: {result['status']}") # Test checklist generation checklist = monitor.generate_checklist() print(f"✅ Checklist generated with {len(checklist)} items") # Test event logging monitor.log_monitoring_event("test", {"message": "System test completed"}) print(f"✅ Event logged, total events: {len(monitor.monitoring_log)}") # Export checklist export_result = monitor.export_checklist() print(f"✅ {export_result}") return True if __name__ == "__main__": test_monitoring_system()