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A rocket's required mass ratio as a function of effective exhaust velocity ratio. The classical rocket equation, or ideal rocket equation is a mathematical equation that describes the motion of vehicles that follow the basic principle of a rocket: a device that can apply acceleration to itself using thrust by expelling part of its mass with high velocity and can thereby move due to the ...
Once in orbit, a spacecraft may fire rocket engines to make in-plane changes to a different altitude or type of orbit, or to change its orbital plane. These maneuvers require changes in the craft's velocity, and the classical rocket equation is used to calculate the propellant requirements for a given delta-v.
Rocket mass ratios versus final velocity calculated from the rocket equation Main article: Tsiolkovsky rocket equation The ideal rocket equation , or the Tsiolkovsky rocket equation, can be used to study the motion of vehicles that behave like a rocket (where a body accelerates itself by ejecting part of its mass, a propellant , with high speed).
The rocket equation shows that the required amount of propellant dramatically increases with increasing delta-v. Therefore, in modern spacecraft propulsion systems considerable study is put into reducing the total delta-v needed for a given spaceflight, as well as designing spacecraft that are capable of producing larger delta-v.
A photo of a drag queen wearing a set of red-tipped horns while reading to children at the Michelle Obama Neighborhood Library in Long Beach, California, is going viral online.
Hiten flew by the Earth at an altitude of 125.5 km over the Pacific at 11.0 km/s. Atmospheric drag lowered the velocity by 1.712 m/s and the apogee altitude by 8665 km. [13] Another aerobraking maneuver was conducted on 30 March. In May 1993, aerobraking was used during the extended Venusian mission of the Magellan spacecraft. [14]
The principal of a high school in Albuquerque, New Mexico, has been replaced and multiple employees have been put on administrative leave as the district investigates a drag queen show that took ...
The RuPaul's Drag Race season 17 cast of queens has slipped into Mama RuPaul's her-storic lineage on the heels of Nymphia Wind's giant banana peel.. Joining the season 17 cast are 14 budding drag ...