- low specific gravity
- Сахалин Р: низкий удельный вес
Универсальный англо-русский словарь. Академик.ру. 2011.
low specific gravity
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Specific strength — The specific strength is a material strength divided by its density. It is expressed in newton metres per kilogram, and is used for tensile strength as for compressive strength. It is sometimes known as the strength to weight ratio. Materials… … Wikipedia
low-density — adjective 1. having low relative density or specific gravity • Similar to: ↑light 2. having low concentration low density urban areas • Similar to: ↑distributed … Useful english dictionary
Specific impulse — (usually abbreviated I sp) is a way to describe the efficiency of rocket and jet engines. It represents the impulse (change in momentum) per unit of propellant. The higher the specific impulse, the less propellant is needed to gain a given amount … Wikipedia
Specific orbital energy — In the gravitational two body problem, the specific orbital energy (or vis viva energy) of two orbiting bodies is the constant sum of their mutual potential energy ( ) and their total kinetic energy ( ), divided by the reduced mass. According to… … Wikipedia
Low Earth orbit — An orbiting cannon ball showing various sub orbital and orbital possibilities … Wikipedia
Gravity drag — In astrodynamics and rocketry, gravity drag (or gravity losses) is the difference between the delta v expended and the actual change in speed achieved by a spacecraft thrusting while in a gravitational field.Gravity losses depend on the time over … Wikipedia
Gravity assist — In orbital mechanics and aerospace engineering, a gravitational slingshot, gravity assist or swing by is the use of the relative movement and gravity of a planet or other celestial body to alter the path and speed of a spacecraft, typically in… … Wikipedia
Gravity tractor — A Gravity tractor (GT) is a spacecraft that deflects another object in space, typically a potentially hazardous asteroid that might impact Earth, without physically contacting it, using only its gravitational field to transmit the required… … Wikipedia
Low-pressure area — This depiction of the Hadley cell shows the process which sustains low pressure areas. Diverging winds aloft allow for lower pressure and convergence at the Earth s surface, which leads to upward motion. A low pressure area, or low , is a region… … Wikipedia
Variable Specific Impulse Magnetoplasma Rocket — Artist s impression of several VASIMR engines propelling a craft through space The Variable Specific Impulse Magnetoplasma Rocket (VASIMR) is an electro magnetic thruster for spacecraft propulsion. It uses radio waves to ionize and heat a… … Wikipedia
Artificial gravity — is a simulation of gravity in outer space or free fall. Artificial gravity is desirable for long term space travel for ease of mobility and to avoid the adverse health effects of weightlessness.MethodsArtificial gravity could be created in… … Wikipedia
