who is the known as the father of aviation
George Cayley In 1799 he set forth the concept of the modern aeroplane as a fixed-wing flying machine with separate systems for lift, propulsion, and control.[2] [3] He was a pioneer of aeronautical engineering and is sometimes referred to as "the father of aviation."[1] He discovered and identified the four forces which act on a heavier-than-air flying vehicle: weight, lift, drag and thrust.[4] Modern aeroplane design is based on those discoveries and on the importance of cambered wings, also identified by Cayley.[5] He constructed the first flying model aeroplane and also diagrammed the elements of vertical flight.[6] He designed the first glider reliably reported to carry a human aloft. He correctly predicted that sustained flight would not occur until a lightweight engine was developed to provide adequate thrust and lift.[7] The Wright brothers acknowledged his importance to the development of aviation.[7]
Robert H. Goddard Although his work in the field was revolutionary, Goddard received very little public support for his research and development work. The press sometimes ridiculed his theories of spaceflight. As a result, he became protective of his privacy and his work. Years after his death, at the dawn of the Space Age, he came to be recognized as one of the founding fathers of modern rocketry, along with Robert Esnault-Pelterie, Konstantin Tsiolkovsky, and Hermann Oberth.[9][10][11][12][13] He not only recognized the potential of rockets for atmospheric research, ballistic missiles and space travel but was the first to scientifically study, design and construct the rockets needed to implement those ideas.[14]