1 Usage. Christensen Hughes Electron Dynamics, Torrance, California Prepared under Contract NAS3-27560 National Aeronautics and Space Administration Glenn Research Center November 1999. 1.1 Electrical vs Xenon consumption; 2 Product description; 3 Trivia; 4 Gallery; 5 Changes; 6 References; Usage. NSTAR Ion Thruster: The NASA Solar Technology Application Readiness (NSTAR) program provided a single string, primary IPS to the Deep Space 1 spacecraft. 2. ion propulsion system on DS1: 1.
The Dawn mission, which launched on Thursday, is equipped with NASA’s first generation of ion engines, called NSTAR. As it approaches, Dawn will conduct a survey of the region around the asteroid for any possible natural satellites, dust and debris. NSTAR Ion Thrusters and Power Processors T.A. The highest orbit will be roughly 2,500 kilometers altitude, the lowest under 200 kilometers.
and the Wikipedia article subsection Dawn (spacecraft); Propulsion system says: The Dawn spacecraft was propelled by three xenon ion thrusters derived from NSTAR technology used by the Deep Space 1 spacecraft, using one at a time. Propellant throughput is an approximate signature of total impulse capability. The NSTAR ion thruster was first used on the Deep Space 1 (DS1) spacecraft, launched on 24 October 1998. For comparison purposes, a SERT II ion engine expended about 9 kg of mercury. The Dawn mission, which launched on Thursday, is equipped with NASA’s first generation of ion engines, called NSTAR. The NSTAR ion engine has already demonstrated a propellant throughput in excess of 30 kg. NASA Center for Aerospace Information 7121 Standard Drive Hanover, MD 21076 Price Code: A08 Available from National Technical Information … By the time it reaches the asteroid, Dawn will have accumulated about 1,000 days … Dawn launched in 2007 on a journey that put about 4.3 billion miles (6.9 billion kilometers) on its odometer. 30-cm NSTAR-type Ion Engine Single Langmuir probe measurements are presented for a two-dimensional array of locations in the near Discharge Cathode Assembly (DCA) region of a 30-cm diameter ring-cusp ion thruster over a range of thruster operating conditions encompassing the high-power half of the NASA throttling table.
Bond and J.A.
The greater the exhaust speed, the more efficient the rocket engine. Propelled by ion engines, the spacecraft achieved many firsts until its extended mission concluded on Nov. 1, 2018. By the time it reaches the asteroid, Dawn will have accumulated about 1,000 days of ion engine operation. They have a specific impulse of 3,100 s and produce a thrust of 90 mN. Image right: Employing a complex commingling of solar derived electric power and xenon gas, Dawn's ion engines must fire for months at a time to propel as well as steer Dawn. All data were analyzed assuming an electron population … 24 The ion accelerator consists of electrically biased multi-aperture grids, typically two or three, which are called ion optics.
Ion thrusters are characterized by the electrostatic acceleration of ions extracted from a plasma source.
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