Wing geometry



  • Hi folks,
    I've been following the development of this project with great interest as I really miss being able to fly the 747 Classic in P3D. The JF 747 looks fantastic so far, but I did notice a minor error with the wing shape that I think your modelers have missed. On the real aircraft, the rake of the leading edge changes to a shallower angle after the outboard pylons. This isn't immediately noticeable from most angles, but it is very apparent when looking down the leading edge. People often miss this because from some angles it gets mistaken for wing flex, but if you draw a line along the leading edge of the wing on an official plan drawing, you will indeed see the change in rake angle. This lovely photograph of a 747-400 shows the change of rake very well: 744wing.jpg

    If you compare this photograph with one of the development shots of the JF 747, you can see the difference:
    747wing.jpg

    I hope this won't be taken as a criticism, and perhaps it's already been spotted and fixed, but I thought I would raise it just in case. Keep up the good work, and really looking forward to this aircraft being released,

    Best wishes,
    tjf


  • JF Staff

    Thanks for the feedback, we'll investigate further in case any changes can be made at this late stage of the development.



  • I'm not sure the -400 had the same wing design as the early -100s and -200s. It was certainly a lot more clever, being 20+ years later...

    Dave



  • @tb10driver said in Wing geometry:

    I'm not sure the -400 had the same wing design as the early -100s and -200s. It was certainly a lot more clever, being 20+ years later...

    Dave

    The -400 had a slightly extended wingspan and winglets, as well as blended wing root fairings, but it still shared the same basic geometry as the 'Classics'. Externally the wings were identical up to the point where the extensions were added, including the change of wing rake I refer to here. There are lots of photographs of -100 and -200 wings that show the same 'kink', but not quite as effectively as in this photograph.

    Here is a drawing of the 'Classic' wing in plan view

    747wing2.jpg

    A photograph of a -200 wing:

    747wing3.jpg