III. A) Match the words with their Ukrainian equivalents.

flight control; yaw; airfoil; fluid dynamics; missile; flyability; level; target; head up display

індикація на лобовому склі кабіни пілота; аеродинамічний профіль; придатність до польоту; мішень; керуюча поверхня; горизонтальний; ракета; рискання; гідродинаміка

b) Combine English terms with the appropriate words to make common collocations. Translate them.

typical…; …surface; …flight; …shape; …motion; cruise...; …simulation

IV. Read and translate the text. Complete the table with the information from the text.

Year	Event	The function
		to improve the flyability of the aircraft
	NACA used calculating machines.
1944
1980s
	Elmer Sperry designed the autopilot.

Computers Evolution in Aviation

Just as computers have affected virtually every aspect of modern life they have also had a major impact on aviation. Computers are now used in all parts of aviation: to design airplanes, to control them in flight, and to ensure that they reach their destinations safely and on time.

Determining when computers first took flight depends upon one's definition of a computer. A little more than a decade after the flight of brothers Wright, the U.S. engineer Elmer Sperry adapted gyroscopes to electric and pneumatic control systems connected to an airplane's flight controls. This device, soon named an autopilot, could hold a plane level and on a specific course.

Computers at NACA first used calculating machines in the 1930s to aid researchers in their work, to perform complicated calculations of airflow over airfoils. Furthermore, wind tunnel facilities often employed groups of women referred to as "computers" whose sole job was to perform mathematical calculations concerning airflow.

By the 1950s, as IBM developed better calculating machines for office use, more powerful computers were pressed into service to assist in number crunching the results of wind tunnel tests and in trying to predict some of the results before actual models were placed into wind tunnels. More powerful computers allowed designers to determine some of test results before a model was even built, and wind tunnel data allowed designers to develop better programs for their computers to predict airflow.

An important early computer, not only for aviation but for computers in general, was the Whirlwind computer started at the MIT in 1944. Whirlwind was a flight simulator. It was the first computer to respond immediately to actions taken by its operator. Previous computers simply took inputs, made calculations and eventually produced an output, sometimes hours later. But Whirlwind responded in "real time."

During the 1950s and early 1960s aircraft carried analog computers as part of their radar equipment. These were used to provide targeting information for guns and missiles. The HUD that projected information onto a piece of glass in front of the pilot relied upon computer input to help the pilot aim his guns or select his weapons.

By the 1980s, computers had become so powerful that for some applications, they actually began replacing wind tunnels entirely. This saved tremendous amounts of money. Aeronautical engineers began developing advanced computer programs to conduct CFD experiments.

The first computers to fly were primitive mechanical devices used to control planes in flight. Airplane and missile designers kept improving these systems, which enabled them to do new things. The German A4 rocket of WWII used an early computer control system. The Canadian CF-105 Arrow interceptor (1958) was the first aircraft to use an analog computer as a means of improving the flyability of the aircraft to reduce the plane's tendency to yaw back and forth in flight.

NACA National Advisory Committee for Aeronautics

MIT Massachusetts Institute of Technology

HUD Head Up Display

CFD Computational Fluid Dynamics