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Root Cause Analysis of Rocket Launch Failure

Rocket Launch Failure Root Cause Analysis

A rocket launch failure happens when a rocket cannot reach the path or orbit it was meant to follow during preparation, lift-off, or ascent. These failures can be caused by many factors such as human mistakes, equipment issues, material defects, environmental conditions, or gaps in processes and planning. Because rockets operate under extreme pressure, temperature, and speed, even a small error can lead to major consequences.

The impact of a launch failure can be serious. It can destroy expensive payloads, damage launch infrastructure, delay missions, and weaken confidence among space agencies and investors. Often, the problem is not just one issue but a combination of small defects or errors that come together at the wrong moment.

After a failure, teams conduct a root cause analysis (RCA) to understand what went wrong and how to prevent it in the future. A fishbone diagram is a helpful tool because it groups possible causes into clear categories such as 5M 1E. This structured approach makes it easier to see the bigger picture instead of focusing only on surface-level symptoms.

By organizing information in this way, teams can identify real weaknesses and develop strong corrective and preventive actions. A Gen-AI powered tool like ProSolvr supports this process by helping teams analyze data, highlight probable causes, and guide investigations more effectively. This leads to clearer decisions, faster learning, and improved reliability in future launches.

Rocket Launch Failure

    • People
      • Human Error
        • Failure to follow pre-launch checklists
        • Incorrect parameter input during launch sequence
      • Inadequate Training
        • Inadequate simulation-based training
        • Lack of experience with new propulsion systems
    • Process
      • Poor Integration Process
        • Faulty interface control documentation
        • Misalignment during stage assembly
      • Ineffective Quality Assurance
        • Missed inspection of critical components
        • Inadequate testing protocols
    • Equipment
      • Guidance System Failure
        • Software calibration error
        • Faulty inertial measurement unit (IMU)
      • Engine Malfunction
        • Fuel injector blockage
        • Turbopump failure
    • Materials
      • Structural Weakness
        • Substandard alloy batch used
        • Fatigue cracks in tank walls
      • Propellant Contamination
        • Improper storage conditions
        • Presence of particulates in oxidizer
    • Environment
      • Electromagnetic Interference
        • Static discharge near communication antenna
        • Signal disruption to guidance system
      • Extreme Weather Conditions
        • Low temperature affecting fuel viscosity
        • High wind shear during ascent
    • Management
      • Cost-cutting Measures
        • Reduced redundancy for critical systems
        • Use of untested components to reduce cost
      • Poor Project Planning
        • Insufficient test time allocation
        • Unrealistic launch schedule

Suggested Actions Checklist

Here are some corrective actions, preventive actions and investigative actions that organizations may find useful:

    • People
      • Human Error
        • Corrective Actions:
          • Retrain involved personnel on pre-launch procedures and critical parameter verification steps.
        • Preventive Actions:
          • Introduce mandatory dual-verification for all launch sequence inputs.
        • Investigative Actions:
          • Review historical deviation reports to identify patterns of operator mistakes.
      • Inadequate Training
        • Corrective Actions:
          • Implement additional hands-on simulation sessions for teams handling propulsion and launch operations.
        • Preventive Actions:
          • Establish a structured certification program for new systems before personnel are assigned to missions.
        • Investigative Actions:
          • Assess gaps in the current training curriculum and interview operators to understand skill deficiencies.
    • Process
      • Poor Integration Process
        • Corrective Actions:
          • Rework assembly and interface alignment procedures for the affected vehicle stages.
        • Preventive Actions:
          • Introduce stricter interface control documentation reviews during every integration cycle.
        • Investigative Actions:
          • Analyze past integration logs to identify recurring misalignment or documentation errors.
      • Ineffective Quality Assurance
        • Corrective Actions:
          • Reinspect all critical components from the affected batch and correct any missed defects.
        • Preventive Actions:
          • Strengthen QA protocols by adding additional checkpoints for high-risk components.
        • Investigative Actions:
          • Audit quality assurance workflows to determine why inspections or tests were missed.
    • Equipment
      • Guidance System Failure
        • Corrective Actions:
          • Replace or recalibrate the malfunctioning guidance hardware and software modules.
        • Preventive Actions:
          • Introduce routine pre-launch calibration cycles for critical guidance subsystems.
        • Investigative Actions:
          • Conduct a root cause teardown of the failed guidance unit to determine failure origin.
      • Engine Malfunction
        • Corrective Actions:
          • Repair or replace defective engine subcomponents such as injectors or turbopumps.
        • Preventive Actions:
          • Implement more rigorous engine health monitoring and scheduled component overhauls.
        • Investigative Actions:
          • Analyze engine performance logs and inspect recovered engine parts to identify degradation patterns.
    • Materials
      • Structural Weakness
        • Corrective Actions:
          • Reinforce or replace compromised structural elements within the vehicle.
        • Preventive Actions:
          • Enhance supplier qualification and introduce tighter acceptance criteria for alloy batches.
        • Investigative Actions:
          • Perform metallurgical testing to determine the source of material weaknesses.
      • Propellant Contamination
        • Corrective Actions:
          • Discard the contaminated propellant batch and clean all associated storage/transfer systems.
        • Preventive Actions:
          • Implement stricter propellant storage and handling protocols to prevent contamination.
        • Investigative Actions:
          • Trace the full storage and transfer chain to identify the contamination point.
    • Environment
      • Electromagnetic Interference
        • Corrective Actions:
          • Shield affected communication and guidance components from EMI sources.
        • Preventive Actions:
          • Introduce EMI-resilience checks during pre-launch setup and site preparation.
        • Investigative Actions:
          • Conduct an EMI survey of the launch pad to identify potential interference hotspots.
      • Extreme Weather Conditions
        • Corrective Actions:
          • Postpone launches when environmental thresholds exceed safety limits.
        • Preventive Actions:
          • Implement advanced weather prediction protocols and strict go/no-go criteria.
        • Investigative Actions:
          • Review weather logs from the launch window to assess deviations from acceptable ranges.
    • Management
      • Cost-cutting Measures
        • Corrective Actions:
          • Restore redundancies or replace untested components used due to budget reductions.
        • Preventive Actions:
          • Establish a cost-control policy that prohibits compromising safety-critical systems.
        • Investigative Actions:
          • Review budget change decisions to identify where safety compromises were introduced.
      • Poor Project Planning
        • Corrective Actions:
          • Reallocate time in the schedule for additional testing and validation activities.
        • Preventive Actions:
          • Implement a realistic project planning framework with risk-based timeline buffers.
        • Investigative Actions:
          • Conduct a retrospective review of planning documents to identify scheduling gaps or unrealistic assumptions.
 

Who can learn from the Rocket Launch Failure template?

  • Aerospace Engineers: They can learn how design flaws, equipment failures, and material issues contribute to launch failures, helping them strengthen engineering practices and system reliability.
  • Quality Assurance and Testing Teams: These teams can use the RCA insights to understand gaps in inspections, testing protocols, and integration processes, enabling them to enhance quality controls and validation procedures.
  • Launch Operations and Ground Crew: They can benefit from understanding human errors and procedural lapses, such as failures in pre-launch checklists, improving operational discipline and adherence to protocols.
  • Project and Program Managers: RCA outcomes help managers understand how planning issues, resource constraints, and cost-cutting measures impact mission safety and success, supporting better decision-making and risk management.
  • Training and Skill Development Teams: These groups can learn from training-related causes such as inadequate simulations or lack of experience with new propulsion systems, helping them develop more effective competency programs.
  • Safety and Risk Management Teams: By reviewing the causes and systemic weaknesses, they can enhance safety frameworks, refine hazard assessments, and reinforce preventive strategies across the aerospace lifecycle.

Why use this template?

ProSolvr helps aerospace teams understand what caused a launch failure and what actions are needed to prevent it from happening again. Launch failures can happen during preparation, lift off, or ascent, and they often result from small problems that add up. ProSolvr makes it easier to find the real causes, organize the facts, and create clear Corrective and Preventive Actions that teams can follow. This helps avoid repeat issues, protects important missions, and improves the reliability of every future launch.

Use ProSolvr by smartQED to systematically reduce errors and eliminate issues that can prevent rocket launch failures, saving billions of dollars in the process.

Curated from community experience and public sources:

  • https://www.space.com/space-exploration/launches-spacecraft/china-galactic-energy-ceres-1-rocket-launch-failure
  • https://www.bbc.com/news/articles/c62n0j4ml77o