Editing SMART-1 (section)

==Spacecraft design==
SMART-1 was about one meter across (3.3&nbsp;ft), and lightweight in comparison to other probes. Its launch mass was 367&nbsp;kg or 809 pounds, of which 287&nbsp;kg (633&nbsp;lb) was non-propellant.

It was propelled by a solar-powered [[Hall-effect thruster]] (Snecma [[PPS-1350]]-G) using 82 kg of [[xenon]] gas contained in a 50 [[litre]]s tank at a pressure of 150 bar at launch. The [[ion engine]] thruster used an [[electrostatic field]] to ionize the xenon and accelerate the [[ion]]s achieving a [[specific impulse]] of 16.1&nbsp;kN·s/kg (1,640 seconds), more than three times the maximum for chemical rockets. One kg of propellant (1/350 to 1/300 of the total mass of the spacecraft) produced a [[delta-v]] of about 45&nbsp;m/s. The electric propulsion subsystem weighted 29&nbsp;kg with a peak power consumption of 1,200 watts.  SMART-1 was the first in the program of ESA's Small Missions for Advanced Research and Technology.

The solar arrays made capable of 1850 W at the beginning of the mission, were able to provide the maximum set of 1,190 W to the thruster, giving a nominal thrust of 68&nbsp;mN, hence an acceleration of 0.2&nbsp;mm/s<sup>2</sup> or 0.7&nbsp;m/s per hour (i.e., just under 0.00002 [[G-force|''g'']] of acceleration). As with all ion-engine powered craft, [[orbital maneuver]]s were not carried out in short bursts but very gradually. The particular trajectory taken by SMART-1 to the Moon required thrusting for about one third to one half of every orbit. When spiraling away from the Earth thrusting was done on the [[perigee]] part of the orbit. At the end of the mission, the thruster had demonstrated the following capability:

* Thruster operating time: 5000 h
* Xenon throughput: 82&nbsp;kg
* Total Impulse: 1.2 MN-s
* Total ΔV: 3.9&nbsp;km/s

As part of the European Space Agency's strategy to build very inexpensive and relatively small [[Spacecraft|spaceships]], the total cost of SMART-1 was a relatively small 110 million [[euro]]s (about 170 million [[United States dollar|U.S. dollars]]). SMART-1 was designed and developed by the [[Swedish Space Corporation]] on behalf of [[ESA]]. Assembly of the spacecraft was carried out by [[Saab Space]] in [[Linköping]]. Tests of the spacecraft were directed by Swedish Space Corporation and executed by Saab Space. The project manager at [[ESA]] was Giuseppe Racca until the spacecraft achieved the moon operational orbit. He was then replaced by [[Gerhard Schwehm]] for the Science phase. The project manager at the Swedish Space Corporation was Peter Rathsman. The Principal Project Scientist was [[Bernard Foing]]. The Ground Segment Manager during the preparation phase was Mike McKay and the Spacecraft Operations manager was  [https://www.linkedin.com/in/octavio-camino-ramos-06ab73b/ Octavio Camino].