Re: [Jsbsim-devel] Scaled Composites' GlobalFlyer Readied for Record Flight

[Ron F. <ron...@at...>]

Message----- Original Message -----=20
  From: Bill Galbraith=20
  To: jsb...@li...=20
  Sent: Tuesday, January 04, 2005 7:19 AM
  Subject: RE: [Jsbsim-devel] Scaled Composites' GlobalFlyer Readied for =
Record Flight


  Predict the flutter?  Nope. Flutter is a structures problem. We don't =
know nothing about sturcture problems. ;-}
  .......
  Bill

      I checked the GlobalFlyer URL.  Looks like it could be dangerous =
to fly.

      That NASA RamJet failed an early test because of structural =
failure.  They decided they hadn't modeled/analyzed supersonic forces on =
a control surface well enough.  =20
    =20
      I see the GlobalFlyer is not a Canard.

      I guess they used the Williams turbofan to save weight.  The =
relatively low speed of the GlobalFlyer puts 'jet' powerplants at a =
disadvantage.    I see they want to limit altitude to FL 450, and IAS to =
150 kts.  That comes to  Mach 0.48, 275 TAS.

      If they average a 100 kt tailwind it would fly 375 kt * 48 hr =3D =
18,500 nm in 2 days. =20

      RAF