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April 2011 Lift    
p1   p2  p3  p4  p5    p6    p7  p8   p9
 

Launching videos for study

Launches: Tow launches

Fatally problematic launches:

Tow-launch problems:

HG speedflying challenges

Powered launches:

 

Aspects   (notes from all are welcomed)                      Discuss
  • Practice air speed identification for the glider being flown.   Is this second-nature and current?
  • Shoe-design safety
  • Interferences
  • Harness interface
  • Posture
  • Landing gear
  • Wheels
  • Skis and types
  • Snouts
  • Whacks
  • Anti-whacks
  • Wheels when wanted 3W
  • Challenges of "assistants" at launching   Avoiding errors.
  •  
http://www.youtube.com/watch?v=dkaG9j3OVWY       Tyler MacCready. See Part 2 also.   See also below: Joseph E. Grant

   Joseph E. Grant

Patent number: 2718092
Filing date: Feb 4, 1950
Issue date: Sep 20, 1955


 

See also: http://en.wikipedia.org/wiki/Walkalong_glider

 

Citations for Flying device utilizing natural principles   by Milan Dennis Earl et al
781104 JAMES B Jan 31, 1905
1076644 QUICK Oct 21, 1913
1287779 FIGURE TOY Dec 17, 1918
1338025 FLYING-MACHINE Apr 27, 1920
1412346 RUDOLF GOLDSCHMIDT Apr 11, 1922
1758178 MACHINE May 13, 1930
1783029 ORNITHOPTER Nov 25, 1930
1936072 SPRING MOTOR Nov 21, 1933
2321977 ORTHOPTER Jun 15, 1943
2783955 FITZ PATRICK Mar 5, 1957
3626555 FLYING TOY Dec 14, 1971
3728814 TOY ORNITHOPTER WIND-DRIVING MECHANISM Apr 24, 1973
4155195 Toy airplane May 22, 1979
4195438 Ornithopter construction Apr 1, 1980
D257731 Flying toy Dec 30, 1980
4417707 Human powered hang glider Nov 29, 1983
4749149 Ornithopter-type vehicle, and methods of constructing and utilizing same Jun 7, 1988
5100357 Toy aircraft and method of flight control thereof Mar 31, 1992
5163861 Wing-operated flying toy, and a process for automatically locking the wings, at the end of a flight Nov 17, 1992
5170965 Hang glider which can fly by human strength Dec 15, 1992
5288039 Spanwise graded twist panel Feb 22, 1994
5401196 Propulsion mechanism employing flapping foils Mar 28, 1995
5899408 Ornithopter May 4, 1999
6082671 Entomopter and method for using same Jul 4, 2000
6206324 Wing-drive mechanism, vehicle employing same, and method for controlling the wing-drive mechanism and vehicle employing same Mar 27, 2001
6227483 Wing movement for ornithopters and apparatus of the like May 8, 2001
6530541 Compressed air engine and flying object equipped therewith Mar 11, 2003
6544092 Toy ornithopter aircraft Apr 8, 2003
6632119 Winding device and ornithopter utilizing same Oct 14, 2003
6783097 Wing-drive mechanism and vehicle employing same Aug 31, 2004
6840476 Resonant wingbeat tuning circuit using strain-rate feedback for ornithoptic micro aerial vehicles Jan 11, 2005
7007889 Flexible airfoils and method Mar 7, 2006