Learn how to use CopperPilot to upgrade automotive-grade hardware to meet aviation certification
standards. This tutorial demonstrates how to evaluate components against DO-160 standards and find
compliant alternatives using CopperPilot’s research and comparison capabilities.
Overview
Aviation certification requires hardware to meet stringent standards defined by tests such as
DO-160 issued by RTCA. This tutorial walks through the process of converting automotive-grade
components to aviation-grade by evaluating them against certification requirements and finding
compliant alternatives.
Project Context: TSAL (Tractive System Active Light)
The Tractive System Active Light (TSAL) is a safety device commonly used in Formula Competition
electric vehicles. It monitors high voltage systems and provides visual feedback:
- Receives battery tap set input through a voltage divider circuit
- Uses a comparator to monitor voltage levels
- Activates an optocoupler when voltage exceeds 60 volts
- Triggers a flashing red LED to indicate high voltage status
- Provides clear visual indication when high voltage is engaged or disengaged
Understanding the Circuit
The TSAL circuit consists of several key components working together:
- Voltage Divider: Scales down the input voltage for measurement
- Comparator: Detects when voltage exceeds the 60V threshold
- Optocoupler (U3): Provides electrical isolation between high and low voltage sides
- LED Indicator: Visual feedback system that flashes when activated
Step-by-Step Compliance Upgrade Process
Step 1: Request Initial Compliance Review
Start by asking CopperPilot to review your component against aviation standards. Reference
the specific component (e.g., @U3 for the optocoupler) and provide context about
the design’s purpose and current application.
Example prompt: “This is a TSAL from a Formula Competition EV. Please review @U3 (optocoupler)
for DO-160 compliance and provide a table outlining the requirements.”
Step 2: Analyze Compliance Report
CopperPilot will search the internet, read relevant datasheets and standards documentation,
and return with a comprehensive compliance table showing:
- Standard Requirements: What DO-160 requires for each parameter
- Current Component Specs: How your existing component performs
- Compliance Status: Whether requirements are met or not
- Gap Analysis: Areas where the component falls short
Step 3: Identify Non-Compliant Areas
Common areas where automotive-grade components may not meet aviation standards include:
- Leakage Current: Maximum allowable current leakage in isolation
- Current Transfer Ratio (CTR): Efficiency of signal transfer through the optocoupler
- MTBF (Mean Time Between Failures): Reliability measure critical for aviation safety
- Temperature Range: Operational temperature extremes
- Voltage Ratings: Maximum voltage handling capabilities
Step 4: Request Alternative Component Survey
Once non-compliance is identified, ask CopperPilot to find suitable alternatives. Be specific
about your requirements:
- DO-160 compliance requirements
- Form factor compatibility (e.g., DIP6 package for drop-in replacement)
- Electrical specifications (voltage ranges, current ranges)
- Operating conditions (temperature ranges)
Step 5: Review Comparative Analysis
CopperPilot conducts an extensive survey and returns with detailed comparison tables:
Table 1: Component Specifications
Comprehensive technical comparison including:
- Temperature operating ranges
- Voltage ranges (input and output)
- Current ranges and CTR specifications
- Footprint and package type (ensuring drop-in compatibility)
- Isolation voltage ratings
- Response time characteristics
Table 2: Recommendations
CopperPilot’s ranked recommendations showing:
- Best candidate components for aviation compliance
- Compliance status for each DO-160 requirement
- Pros and cons of each alternative
- Availability and sourcing information
- Cost considerations
Step 6: Make Informed Decision
Using CopperPilot’s analysis, you can confidently select a replacement component that:
- Meets all DO-160 certification requirements
- Fits existing PCB layout (drop-in replacement)
- Maintains or improves circuit performance
- Is readily available from reliable suppliers
Key Benefits of Using CopperPilot for Compliance
- Standards Knowledge: CopperPilot understands aviation certification requirements
- Automated Research: Searches through datasheets and standards documentation automatically
- Comprehensive Analysis: Evaluates multiple parameters simultaneously
- Alternative Sourcing: Finds compliant replacements with compatible footprints
- Time Savings: Reduces weeks of manual research to minutes
- Risk Reduction: Ensures no critical compliance factors are overlooked
- Documentation: Provides detailed tables and citations for certification records
Applications Beyond Aviation
This same process can be applied to other certification standards:
- Automotive: AEC-Q100/Q200 standards
- Medical: IEC 60601 compliance
- Industrial: IEC 61010 safety requirements
- Military: MIL-STD specifications
- Space: NASA standards and requirements
Best Practices
- Start compliance review early in the design process
- Be specific about certification standards and requirements
- Consider form factor compatibility for easier retrofits
- Review all CopperPilot citations to verify compliance claims
- Evaluate multiple component alternatives before making final selection
- Document the compliance analysis process for certification records
- Consider supply chain stability for aviation-grade components
CopperPilot’s ability to understand certification requirements, analyze component specifications
against standards, and find compliant alternatives makes it an invaluable tool for upgrading
designs to meet stringent aviation and other industry-specific certification requirements.