Free 173 Best Homemade Tools eBook:  
Become a founding member: 500+ tool plans, full site access, and more.

User Tag List

Results 1 to 2 of 2

Thread: 1930 Demenjoz sail-powered glider - GIF

  1. #1
    Content Editor
    Supporting Member
    Altair's Avatar
    Join Date
    Aug 2013
    Posts
    4,639
    Thanks
    884
    Thanked 11,246 Times in 3,425 Posts

    1930 Demenjoz sail-powered glider - GIF

    Sail-powered glider built in 1930 by Swiss inventor John Domenjoz.




    Previously:

    Man's early flight attempts - GIF
    1907 Multiplane - photo
    Hewitt-Sperry pilotless airplane - photo
    The "Wrong" Brothers aviation failures - video
    1917 Curtiss-Goupil Duck - photos

    173 Best Homemade Tools eBook

  2. The Following 3 Users Say Thank You to Altair For This Useful Post:

    Floradawg (Jul 27, 2021), KustomsbyKent (Jul 26, 2021), nova_robotics (Jul 31, 2021)

  3. #2
    Supporting Member schuylergrace's Avatar
    Join Date
    Sep 2020
    Posts
    31
    Thanks
    27
    Thanked 10 Times in 6 Posts
    Hahahahahahaha! I hear Boeing is using this on their next generation passenger jets to save on fuel, but the sails have to be made of carbon fiber to withstand 500 knots airspeed. There'll even be a little hatch in the top of the fuselage, so the flight attendants can go up and hoist signal flags in the event of a radio failure. They are all about the safety, now.

Thread Information

Users Browsing this Thread

There are currently 1 users browsing this thread. (0 members and 1 guests)

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •