Aeronautics (from Greek ὰήρ āēr which means "air" and ναυτική nautikē which means "navigation, Airmanship", i.e. "navigation of the air") is the science involved with the study, design, and manufacturing of airflight-capable machines, or the techniques of operating aircraft and rocketry within the atmosphere. While the term—literally meaning "sailing the air"—originally referred solely to the science of operating the aircraft,it has since been expanded to include technology, business and other aspects related to aircraft.
One of the significant parts in aeronautics is a branch of physical science called aerodynamics, which deals with the motion of air and the way that it interacts with objects in motion, such as an aircraft. The term "aviation" is sometimes used interchangeably with aeronautics, although "aeronautics" includes lighter-than-air craft such as airships, and includes ballistic vehicles while "aviation" does not.
The first mention of aeronautics in history was in the writings of ancient Egyptians who described the flight of birds. It also finds mention in ancient China where people were flying kites thousands of years ago. The medieval Islamic scientists were not far behind, as they understood the actual mechanism of bird flight. Before scientific investigation of aeronautics started, people started thinking of ways to fly. In a Greek legend, Icarus and his father Daedalus built wings of feathers and wax and flew out of a prison. Icarus flew too close to the sun, the wax melted, and he fell in the sea and drowned. When people started to scientifically study how to fly, people began to understand the basics of air and aerodynamics. Ibn Firnas may have tried to fly in 8th century in Cordoba, Al-Andalus.
GTI may refer to:
Gary Richard Herbert (born May 7, 1947) is the 17th and current Governor of the U.S. state of Utah. Having served as the sixth Lieutenant Governor of Utah from 2005 to 2009, he assumed the governorship on August 11, 2009, following the resignation of Jon Huntsman, Jr., who was appointed United States Ambassador to the People's Republic of China by President Barack Obama. Herbert was elected to serve out the remainder of the term in a special election in 2010, defeating his opponent 64%-32%. He is seeking election to a full four-year term in 2012.
Herbert was born to Paul and Carol Peters in American Fork, later being adopted by his stepfather, Duane Barlow Herbert. Governor Herbert grew up in Orem, Utah. He graduated from Orem High School, served a two year mission for the LDS Church in the Eastern States Mission and later attended Brigham Young University, but did not graduate. Herbert is of entirely English descent.
He is married to Jeanette Snelson Herbert; they have six children and thirteen grandchildren.