EAA284 reviewed video of Mark Dusenberry’s accident

Posted By on November 9, 2009

Clear day at Red Stewart Field

Enjoyed the nice afternoon weather and headed to the airport for our monthly EAA meeting. Today we reviewed the successful first flight (very impressive) and later accident of Mark Dusenberry’s 1905 Wright Flyer replica — NTSB preliminary report. Bob Luken reviewed his video of the flight and the accident (only the FAA has a copy besides Bob) and discussed the inherit pitch instability well know in this airplane. According to research, the Wright Brothers made changes to their original 1905 design by  pushing the canard “horizontal rudder” farther forward and adding 70 pounds of lead in order to improve CG for their July 1905 flights. This didn’t solve the sensitivity to pitch, but did improve the pitch problem somewhat.

Watching Video of Mark Dusenberry's flights

After watching the video of the accident several time in slow motion, it was easy to see that each pitch correction by Mark lead to exaggerated climb and dive movements and eventually an uncontrollable 45 degree angle to the ground. Although Mark built his replica to match the “improved CG 1905 design,” it is possible there still wasn’t enough weight forward — speculation on our part. Another thought was that he was also correcting with ‘wing warp’ bank left just before experiencing pitch oscillations, and that could have added to a loss of control? In any case, thanks for sharing the video with our EAA284 Chapter.

Comments

  • Dennis Schwecke

    Rich –

    I was very much looking forward to seeing Mark Dusenberry fly this year, and I was very sorry to hear of his tragic accident. My plan was to come to the public event, so I was not able to be there for any of the pracitce flights. I would love to see the video of the first flight, if it is posted or available anywhere. Is there video of this, or any of the other successful flights available that you know of? (I was at the 2005 and 2007 flights, but I’m no videographer). Mark’s flyer is truly a beautiful machine in the air.

    I certainly wish Mark and all his family and friends all the best during his recuperation.

    Thanks.

  • Lori Golec-Judy

    Please do not continue to share my brother’s tragic accident by video. He has been contacted to share it and has declined. Thank you to Rich for his kind words. Please respect my brother’s wishes. Mark’s sister, Lori

  • Lori,
    As far as I know, the only copies are with the FAA and Bob Luken. I’ve forwarded your request to Bob (on EAA284.org comment) and respect Mark wishes. Please give him my best as well as from our EAA chapter.
    Rich

    • Golecjudyl

      Hi Rich,
      I just saw your post today. Thank you for spreading the word. It is so appreciated. Mark continues to amaze me with his strength and determination. To say he ia one of a kind is truly an understatement! I am so proud to be able to say he is my brother. many thanks for your continued positive thoughts and prayers!
      Mark’s sister,
      Lori

      • I’m glad to hear positive words about Mark and his “strength and determination.” Thanks for leaving a comment as I will mention in our next meeting.

Desultory - des-uhl-tawr-ee, -tohr-ee

  1. lacking in consistency, constancy, or visible order, disconnected; fitful: desultory conversation.
  2. digressing from or unconnected with the main subject; random: a desultory remark.