The Birth of the Airplane Dr. Charles H. Marston Professor Emeritus Department of Mechanical Engineering Villanova University
The Wright Brothers December 17, Axis control Learn to fly System
Cayley’s Silver Disc 1799 Lift and Propulsion Separated
Cayley’s Whirling Arm Lift ~ sin(alpha)
Cayley’s Model Glider 1804 Low aspect ratio fixed wing Adjustable tail
Henson’s Aerial Steam Carriage 1843 London to India 30 Passengers 30 HP
Otto Lilienthal Tested Airfoils Hang gliding Inspired the Wrights
One of Lilienthal’s Gliders Controlled by shifting weight Fatal crash Aug 1896
Octave Chanute Civil Engineer Pratt Truss The Race for True Powered Flight
Charles Manley and Samuel Langley
Drawing of Langley Aerodrome Dihedral for Lateral Stability
Balzer-Manley Engine 52 HP/207 lbm
WilburOrville
The 1900 Glider Flown as a Kite Note the angle of the tie line (enhanced)
1/3 of Lift 1901 Glider Adverse yaw
Discouragement Presentation to Engineer Society Must find causes of reduced lift
Balance for measuring C L in the Wind Tunnel
’02 Wright Glider Flown as a Kite
’02 Glider in Flight Vertical Rudder to correct adverse yaw
Wright Brothers’ Engine 12 HP/179 lbm
The Wright Brothers’ Propellers Designed as a series of airfoils Modern Copy tested at 80% efficiency
Crunch Time Fall 1903
Langley was aware of the Wright Brothers (and vice versa) Invited Wright’s to Washington No invitation to visit Kitty Hawk Chanute was a friend of both teams
Aerodrome Ready for First Launch October 1903
Aerodrome First Launch Oct 1903
Aerodrome Second Launch Dec 1903
Langley Doomed Scaleup design Wrong priorities “All up” public testing Remote management Overhead expenses
Kitty Hawk, NC November 28, 1903 Wilbur won the toss Over controlled Shaft failed
Side View of Flyer
First Flight Dec 17,1903
Success Step-by-step “airman” R&D Progam Complete System Built on work of others Remarkable insights Gliders easy to repair Less than $1000 out of pocket
Plaque mounted near the Wright Flyer... the world's first power driven, heavier-than-air machine in which man made free, controlled, and sustained flight... By original scientific research the Wright brothers discovered the principles of human flight...
Bleriot Headed for England July 1909
100 th Anniversary
The aerodrome flies, pilot: Curtiss
Aerodrome Restored Now on display at the Smithsonian Udvar-Hazy Museum (Dulles Airport)
The World Learns to Fly
Derrick Catapult Lower air density in Dayton
’05 Flyer in Flight
Santos DuMont 14bis 1906
Delagrange in Voisin-Farman First flight in a closed circle in Europe May 1908
Curtiss’ June Bug, 1 Km Flight for Sci. Am. Prize July 1908
1908 Back in the Air Test fly new airplanes at Kitty hawk Wilbur to France Orville to Washington, DC
Wilbur over France Aug 1908
Orville over Fort Meyer Sept Army Contract
Hubert Latham in Antoinette Ready to Fly the Channel
Bleriot Headed for England July 1909