Wright Brothers 1896 - 1914. Modern Aviation Influences  Chinese kite  Primitive aeroplane  Supported in the air by the action of wind upon an inclined.

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Presentation transcript:

Wright Brothers

Modern Aviation Influences  Chinese kite  Primitive aeroplane  Supported in the air by the action of wind upon an inclined surface  Windmill  Recognized significance as propeller

Sir George Cayley  Considered first aeronautical engineer  Idea conceived in 1804  Defined problem  Mechanical flight vs chemical flight  Sketched fixed-wing glider  had empennage  fuselage  and wing  built model glider and flew

Cayley’s 1804 Glider

Henson & Stringfellow  Organized Aerial Transit Company  Built 20-foot model of monoplane  Test flight in 1847  Failed to fly  Demonstrated possibility of heavier-than-air flight heavier-than-air flight  Built 10-foot model  “Launch-by-wire” aircraft

Felix du Temple  Flew steam-powered model in 1857  Built full-size model  Used tractor propeller  1874 – rolled down ramp and hopped into air  Used high-speed circulation steam engine

Otto Lilienthal  Constructed/flew gliders  Logged nearly 2,000 glider flights  Constructed  5 types of monoplane gliders  2 bi-plane gliders with bat-wing shape

Octave Chanute  Engineer of complex bridges and railroad terminals  Interested shifted to aviation  Compiled “Progress in Flying Machines”

Chanute  William Avery - Gliding  St Louis World Fair  Flown more than 80 times at Fair  Became mentor to Wright Brothers  Witnessed early Wright flights

Wright Brothers  Lived in Dayton Ohio  Opened bicycle shop  Aviation interest  Lilienthal’s death  Pilot control was key successful and safe flight  Began glider flights to solve problem  Problems of mechanical flight  Stability  Maneuverability  Design relatively unstable airplane

Wright Gliders  1900 Glider – (bi-plane) only flew a few days  Wilbur flew as a kite (tethered)  Most were unpiloted  By design unstable  Wing warping controlled by wings  Pilot in prone position  1901 Glider (50 – 100 flights in summer)  Larger wing surface  2 disappointments  Only produced 1/3 lift calculated  Wing warping sometimes responded in opposite direction  Known as adverse yaw

Wright Gliders  Determined equations calculating lift were wrong  Built wind tunnel  Conducted systematic tests on miniature wings  Basic test on 200 wings of many shapes  Detailed tests on 38 of them  Longer narrower wings were an important discovery  1902 Glider (1,000 flights in summer)  Made airfoil flatter (reduce camber)  Discarded Lilienthal’s data  Fixed, rear vertical rudder  Eliminate adverse yaw  Hinged rudder and wing warping together

Wright Gliders  1902 Glider (Con’t)  Rudder  Aim or align aircraft correctly during banking turns  Three-axis control evolved  Wing warp – lateral motion  Forward elevator – up and down  Rear rudder – side to side  1902 Glider  Achieved true control on Oct 8, 1902  Now ready to add power  Invention of the airplane

Adding Power  1903 Wright Flyer I  Carved own wooden propellers  Built gasoline engine in bicycle shop  Charles Taylor built engine in 6 weeks  Used aluminum for weight  Weeks of delays  Broken propeller shafts

First Attempt  14 Dec 1903  Rail laid downhill and into the wind  Landing gear was skids  Wilbur Wright won coin toss  Stalled after takeoff, damaging Flyer  Nose up too high – pilot error  Flyer repaired

17 Dec 1903  Orville’s Turn  Rail moved to level ground  5 witnesses and a camera for verification  120’ in 12 seconds  Attributed shortness to lack of experience  Achieved first manned, powered, controlled, and sustained flight in the airplane

17 Dec 1903  Wilbur  175 feet in 11 seconds  Orville  200 feet in 15 sec  Wilbur  852 feet in 59 seconds  Damaged plane

Wright Patent  1903 application  Dismissed  Hired lawyer – Henry Toulmin  Claim of a new/useful method to control flying machine  Wing warping and other methods  Steerable rear vertical rudder and combination with wing warping  Forward elevator  Glenn Curtiss and others devised ailerons

1904  1903 Flyer was not practical aircraft  Set up at Huffman Prairie  Built airport  Removal of bar wire fences  Construction of hanger  Installation of launch rails  Developed Wright Flyer No. 2  Less camber/more horsepower  New propeller gearing

1904  Required longer starting rails  Kept low to the ground  Sept - Used weight-powered catapult for takeoffs  20 Sep 1904 – first complete circle flight  End of year – 50 minutes in the air in 105 flights

Wright Flyer No. 3  New machine except for 1904 engine  Separate control for rear rudder  Orville near fatal accident - Improvements  Enlarged forward elevator and rear rudder  Place several feet farther away from wings wings  Improved stability and control  49 flight in 1905  Many 17 – 38 minutes in length  Most ended because fuel ran out

Non-Flying  No flights in 1906 and 1907  No patent  Offered to sell flying machine  European skeptics

Refurbished Wright Flyer No. 3  US Army Signal Corps (Dec 1907)  Invited proposals  41 bids received  Wright Brothers won contract  1908 – Contract with French company

Refurbished Wright Flyer No. 3  US Army Signal Corps  Contract required carrying passenger  Modified 1905 Flyer  Seat for pilot and one passenger  Hand levers replace hip cradle  Charles Furnas (mechanic) first passenger  Model A for Army  Crashed 17 Sep 1908  Lt Selfridge first airplane fatality  Orville sustained serious injury

European Tour   European skepticism   Wilbur Wright toured Europe   Official public demonstrations   Catapulted brothers to world fame   Edith Berg, first American woman passenger   Won Michelin Cup   2 hours 18 minutes 33 seconds   Trained pilots who purchased airplanes

Military Sales   2 revised Model B’s   Added wheels   Moved elevator from front to rear   Easier to control due to higher speeds   30 HP and top speed of 42 MPH   Model C Triad Scout   50 HP and top speed of 48 MPH   Army questioned safety and design   Ended use of “pusher” type propellers   Model D Scout   50 HP and top speed of 67 MPH

Wright Company   Wilbur - president   Orville – vice-president   Constructed factory in Dayton   Production reached 2 airplanes per month   Trained 115 pilots by 1916   Hap Arnold was trained there

Later Years   Wilbur - died in 1912 (45)   Typhoid   Orville   Sold manufacturing/patent rights in 1915   1944 – flew on Lockheed Constellation   Howard Hughes pilot   “Wingspan was longer than the distance of his first flight”   Died 30 Jan 1948