When Were Winglets Added to Planes?

The initial concept dates back to 1897, when English engineer Frederick W. Lanchester patented wing end-plates as a method for controlling wingtip vortices. In the United States, Scottish-born engineer William E. Somerville patented the first functional winglets in 1910.

Why does the Boeing 777 not have winglets?

Why does the 777 not have winglets? One reason that the 777 does not feature such wingtip extensions is the operational limits these would place on the aircraft. The 777-200LR and -300ER variants of the aircraft have a wingspan of 64.8 meters. ... This would cause the aircraft to be classified under aerodrome code F.

Why do planes have turned up wingtips?

Winglets allow the wings to be more efficient at creating lift, which means planes require less power from the engines. ... Winglets help mitigate the effects of "induced drag." When an aircraft is in flight, the air pressure on top of the wing is lower than the air pressure under the wing.