- published: 08 Feb 2008
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Supersonic speed is a rate of travel of an object that exceeds the speed of sound (Mach 1). For objects traveling in dry air of a temperature of 20 °C (68 °F) this speed is approximately 343 m/s, 1,125 ft/s, 768 mph or 1,235 km/h. Speeds greater than five times the speed of sound (Mach 5) are often referred to as hypersonic. Flight during which only some parts of the air around an object, such as the ends of rotor blades, reach supersonic speeds are called transonic. This occurs typically somewhere between Mach 0.8 and Mach 1.2.3
Sounds are traveling vibrations in the form of pressure waves in an elastic medium. In gases, sound travels longitudinally at different speeds, mostly depending on the molecular mass and temperature of the gas, and pressure has little effect. Since air temperature and composition varies significantly with altitude, Mach numbers for aircraft may change despite a constant travel speed. In water at room temperature supersonic speed can be considered as any speed greater than 1,440 m/s (4,724 ft/s). In solids, sound waves can be polarized longitudinally or transversely and have even higher velocities.
Actors: Antonio Cantafora (actor), Cameron Mitchell (actor), Juan Piquer Simón (writer), Marta Fernández Muro (actress), Dick Randall (producer), Juan Piquer Simón (producer), Ángel Ter (actor), Frank Braña (actor), José María Caffarel (actor), Emilio Fornet (actor), Tito García (actor), José María Caffarel (actor), Luis Barboo (actor), Pedro del Rey (editor), Juan Piquer Simón (director),
Plot: An alien, "Supersonic Man," is sent to Earth to thwart the plans of evil men who would destroy the galaxy itself with their weapons. Only his superpowers, which include flight, bulletproof skin, and the ability to turn guns into bananas, can save Earth from destruction.
Keywords: acme-brand, alien, character-name-in-title, galaxy, savior, space, superhero