• Held a status meeting this week, planning on discussing strategy at next week’s meeting to examine Year 1 tasks, where we are currently at with the PAAW program, and our planned path forward in preparation for the upcoming Holiday break.
  • Will hold Control Law meetings to cross pollinate aeroelasticity knowledge and work out issues such as standardizing reference frames, I/O planes, etc starting next year. These meetings may occur in addition to the regular weekly meetings depending on the pacing of the program at the time.
  • Looking into locations and timeframes for hosting an “in-person” kickoff meeting among the team members.

Status Updates

  • mAEWing1
    • UMN
      • Updated the FEM model and is cleaning up the FEM software.
      • Developed a preliminary LPV control law.
      • The updated FEM model, an updated DLM model, the FEM software, and the LPV control law will be posted to the git repositories next week.
      • The wind tunnel entry has not produced acceptable results, UMN has de-prioritized the testing and will be focusing on flying the rigid mini MUTT aircraft to validate aerodynamic data. One of our graduate students will be investigating how to get good data from testing in our wind tunnel for mAEWing2 and xAEWing3.
      • A trial layup of an mAEWing1 wing spar was completed; lots of lessons learned about the spar layup process and we’ll be making some adjustments to the ply table for the flight vehicle spars.
    • Dave S.
      • Control law design will be uploaded to the git repositories shortly.
      • Investigated the LM models, especially regarding the coordinate frames used and whether these coordinate frames are appropriate for control design.
        • Additional information emailed regarding transforming reference frames - this information located in Dave’s book, “Modern Flight Dynamics” and papers sent by STI.
        • UMN investigated the LM model reference frames and, although it’s assumed that outputs are in the body-fixed frame, it’s not certain and warrants further validation.
        • We should develop a standard approach for models and control laws (reference frames, I/O planes).
    • STI
      • MIDAAS approach suppressing flutter
      • A structured H inf for stabilizing the rigid body modes
      • Working to add more than 1 mode for the MIDAAS flutter suppression and to integrate the flutter suppression and rigid body control laws together.
  • mAEWing2
    • VT
      • UMN will start getting VT preliminary dimensions of OML and variables for MDAO process.
      • Should have more discussions regarding the MDAO research and how to incorporate desired additional components (wing shapes for drag, flexibility, control laws, effectors, and sensors).
    • CM Soft
      • Discussed using inviscid flow for initial studies of wing shapes and aerodynamic model development with viscous models later to validate desired wing shapes for minimum drag.