With " no desire for an army career ," according to historian Thomas Mach, Brice ended his military career soon after to pursue a career in law.

* Thomas S. Mach.

Sending and receiving letters from Leo Tolstoy, Thomas Edison, Nichola Tesla, Booker T. Washington, Elizabeth Cady Stanton, Ernst Mach, Ernst Haeckel, John Dewey, and many more.

The 990 remains the fastest U. S. airliner in history, cruising at up to Mach 0. 89.

* Klaus Hentschel: Mach, Ernst, in: Neue Deutsche Biographie 15 ( 1987 ), S. 605-609.

* 1996 Cessna Aircraft Company and the Citation X Design Team for designing, testing, certifying, and placing into service the Citation X, the first commercial aircraft in U. S. Aviation history to achieve a cruising speed of Mach. 92

* September 27 – U. S. Air Force Captain Milburn Apt sets a new world air speed record in the Bell X-2, becoming the first person to exceed Mach 3, reaching a speed of Mach 3. 2 – 2, 094 mph ( 3, 350 km / h ) – before he loses control of the X-2 and dies in the resulting crash.

* The National Advisory Committee for Aeronautics ( NACA ), U. S. Air Force, and U. S. Navy form the NACA-Air Force-Navy Research Aircraft Committee to develop a Mach 6 rocket-boosted hypersonic research aircraft.

* August 21-The U. S. Air Force formally cancels the XF-103 Mach 3 interceptor aircraft program.

* March 7 – Flying a North American X-15, U. S. Air Force Major Robert M. White becomes the first pilot to exceed Mach 4.

* June 23 – U. S. Air Force Major Robert M. White becomes the first pilot achieve hypersonic – speeds higher than Mach 5 – flight, reaching Mach 5. 27 ( 3, 603 mph ; 5, 802 km / h ) in North American X-15 56-6671.

* November 9 – A North American X-15 flown by U. S. Air Force test pilot Major Robert M. White becomes the first airplane to exceed Mach 6, achieving Mach 6. 04 ( 4, 094 mph, 6, 593 km / h ) at an altitude of 102, 000 feet ( 31, 090 meters ) during a flight of under 8 minutes between Mud Lake, Nevada, and Edwards Air Force Base, California.

* October 3 – U. S. Air Force Major William J. Knight sets a new world airspeed record in the North American X-15A-2, reaching Mach 6. 72 ( 4, 520 mph, 7, 274 km / h ), and lands safely despite multiple structural failures that cause the X-15s scramjet module to separate from the aircraft and damage the fuel-jettison system.

* November 15 – A North American X-15 on a high-altitude flight enters a spin at over Mach 5 and breaks up well above Mach 4, killing its pilot, U. S. Air Force Major Michael J. Adams.

desert, in which the ' S ' manueuver at Mach 2. 8 was demonstrated for the Indian Army and a launch in which the land attack capability from sea was demonstrated.

In March, 2011, the U. S. Air Force successfully tested a 50 / 50 mix of jet propellent 8 ( JP-8 ) and camelina-derived biofuel in an F-22 Raptor, achieving a speed of Mach 1. 5.

A slightly modified version, designated RP-78, was supplied to the U. S. Navy ; it used a more powerful rocket, producing of thrust, to propel the drone to a top speed of Mach 1. 25.

Aerodynamicists disagree over the precise definition of hypersonic flow ; minimum Mach numbers for hypersonic flow range from 3 to 12.

The ratio of the flow speed to the speed of sound was named the Mach number after Ernst Mach, who was one of the first to investigate the properties of supersonic flow which included Schlieren photography techniques to visualize the changes in density.

Theodore von Kármán and Hugh Latimer Dryden introduced the term transonic to describe flow speeds around Mach 1 where drag increases rapidly.

Because of the increase in drag approaching Mach 1, aerodynamicists and aviators disagreed on whether supersonic flight was achievable.

Image showing shock waves from NASA's X-43A hypersonic research vehicle in flight at Mach 7, generated using a computational fluid dynamics algorithm. On September 30, 1935 an exclusive conference was held in Rome with the topic of high velocity flight and the possibility of breaking the sound barrier.

The Mach number is used to evaluate whether the incompressibility can be assumed or the flow must be solved as compressible.

In air, compressibility effects are usually ignored when the Mach number in the flow does not exceed 0. 3 ( about 335 feet ( 102m ) per second or 228 miles ( 366 km ) per hour at 60 ° F ).

In general, this is the case where the Mach number in part or all of the flow exceeds 0. 3.

The Mach. 3 value is rather arbitrary, but it is used because gas flows with a Mach number below that value demonstrate changes in density with respect to the change in pressure of less than 5 %.

The term Transonic refers to a range of velocities just below and above the local speed of sound ( generally taken as Mach 0. 8 – 1. 2 ).

It is defined as the range of speeds between the critical Mach number, when some parts of the airflow over an aircraft become supersonic, and a higher speed, typically near Mach 1. 2, when all of the airflow is supersonic.

Thus, when the fluid finally does strike the object, it is forced to change its properties -- temperature, density, pressure, and Mach number -- in an extremely violent and irreversible fashion called a shock wave.

In the 1970s, the term generally came to refer to speeds of Mach 5 ( 5 times the speed of sound ) and above.

A smokeless, solid-propellant, booster-sustainer rocket motor propels the missile at speeds over Mach 2.

The Phoenix has several guidance modes and achieves its longest range by using mid-course updates from the F-14A / B AWG-9 radar ( APG-71 radar in the F-14D ) as it climbs to cruise between and at close to Mach 5.

Similarly, the Soviet Union used the intermediate-range Tu-22M ' Backfire ' in the 1970s, but their Mach 3 bomber project came to naught.

The Mach 2 Tu-160 ' Blackjack ' was built only in tiny numbers, leaving the 1950s Tupolev Tu-16 and Tu-95 ' Bear ' heavy bombers to continue being used into the 21st century.

The campus includes numerous works by well-known artists ( including the Centennial Fountain by Seattle artist George Tsutakawa — recipient of an honorary doctorate from Seattle U .— and a large glass sculpture in the PACCAR Atrium of Piggot Hall by Tacoma, Washington artist Dale Chihuly, as well as works by Chuck Close, Jacob Lawrence, Gwendolyn Knight, William Morris ( glass artist ) and David Mach ) and several architecturally notable buildings.

Mathematicians and Physicists who established the foundations of this aero-thermo domain include: Sir Isaac Newton, Daniel Bernoulli, Leonard Euler, Claude-Louis Navier, Sir George Gabriel Stokes, Ernst Mach, Nikolay Yegorovich Zhukovsky, Martin Wilhelm Kutta, Ludwig Prandtl, Theodore von Kármán, Paul Richard Heinrich Blasius, and Henri Coandă.

The names were Peggy Aleixo, Colette Askeland, Bill Atkinson, Steve Balog, Bob Belleville, Mike Boich, Bill Bull, Matt Carter, Berry Cash, Debbie Coleman, George Crow, Donn Denman, Christopher Espinosa, Bill Fernandez, Martin Haeberli, Andy Hertzfeld, Joanna Hoffman, Rod Holt, Bruce Horn, Hap Horn, Brian Howard, Steve Jobs, Larry Kenyon, Patti King, Daniel Kottke, Angeline Lo, Ivan Mach, Gerald Manock, Mary Ellen McCammon, Vicki Milledge, Mike Murray, Ron Nicholson Jr, Terry Oyama, Benjamin Pang, Jef Raskin, Brian Robertson, Dave Roots, Patricia Sharp, Burrell Smith, Bryan Stearns, Lynn Takahashi, Randy Wigginton, Linda Wilkin, Steve Wozniak, Pamela Wyman, Laszlo Zidek, and two others.

* April 26 – During a dive, a North American YP-86 flown by George Welch becomes the first American fighter aircraft to exceed Mach 1.

* February 26 – George F. Smith becomes the first person to survive a supersonic ejection, from a North American F-100 Super Sabre travelling at Mach 1. 05.

Math, Duck Hunt, Excitebike, Golf, Gyromite, Hogan's Alley, Ice Climber, Kung Fu, Mach Rider, Pinball, Stack-Up, Super Mario Bros., Tennis, Wild Gunman, and Wrecking Crew.

Petr Mach, an economist, a close associate of president Václav Klaus and a member of the Civic Democratic Party between 1997 and 2007, founded the Free Citizens Party in 2009.