RTOSs for Air Refueling Aircraft System : Enabling multiple RTOSs to share ethernet on a single processor

The Challenge

Enable multiple Real-Time Operating Systems to securely share Ethernet interfaces while meeting DO-178C safety standards

Technical Complexity

  • Distribute multicast and broadcast packets without external routing
  • Protect memory buffers between isolated operating systems
  • Program MMU and PAMU for proper functionality

Our Approach

Started with 2 engineers for feasibility validation. Designed, implemented, and tested the solution. Scaled to 10+ engineers. Provided technical continuity when the original architect departed.

The Outcome

  • Successfully delivered DO-178C certified driver solution
  • Became the customer’s technical authority on Ethernet communications
  • Enabled remote vision capability critical to aircraft mission

Speaker Notes:

This case study shows Quest Defense solving a specific, difficult technical problem that required both expertise and partnership. Emphasize the progression. Started with 2 engineers to prove feasibility, became trusted technical leads, scaled to 10+, and provided continuity when the architect left. That’s the partnership model in action.

The technical details around MMU, PAMU, and multicast distribution establish credibility with technical audiences. The point is to show you can solve hard problems at this level of depth.

The outcome focuses on business value. The customer got their remote vision capability and a trusted technical partner. We didn’t just deliver code. We became their experts in this domain.

If your audience is program-focused, emphasize the scaling and continuity. If technical, spend more time on the architecture challenge.