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IKAROS, the first space-probe with a solar sail in flight (artist's depiction), featuring a typical square sail configuration of almost 200 m 2. Solar sails (also known as lightsails, light sails, and photon sails) are a method of spacecraft propulsion using radiation pressure exerted by sunlight on large surfaces.
A preliminary mission outline suggests the use of solar sails [4] propelled by high energy lasers to increase propulsion. [4] The proposed launch would be on the 100th anniversary of the Apollo 11 mission. [6] The spacecraft would reach Alpha Centauri by the year 2113, 44 years after its launch travelling at 10% of the speed of light. [3]
LightSail 2 with deployed solar sail, 23 July 2019. LightSail 2 (COSPAR 2019-036AC) was a CubeSat fitted with a solar sail the size of a boxing ring, covering 32 m 2 (340 sq ft). The sail captured incoming photons from the Sun, just as a wind sail catches the moving air molecules, to propel the spacecraft. [30]
A diffractive solar sail, or diffractive lightsail, is a type of solar sail which relies on diffraction instead of reflection for its propulsion. [ 1 ] [ 2 ] Current diffractive sail designs use thin metamaterial films, containing micrometer-size gratings based on polarization or subwavelength refractive structures, causing light to spread out ...
The Znamya mirror had originally been designed as a prototype of a solar sail propulsion system, [4] but was repurposed as a space mirror for illumination when interest in solar sails flagged. Znamya 2.5
Artist's concept of a heliogyro, proposed to visit Halley's Comet in 1986. Each blade would be 8 m (26 ft) wide and 6.2 km (3.9 mi), for 0.6 km 2 (0.23 sq mi) of sail area. Solar sail types. A heliogyro could have dozens of blades. UltraSail is a proposed type of robotic spacecraft that uses radiation pressure exerted by sunlight for propulsion.
An example of work on this type of technology is Advanced Electric Propulsion System. [5] The NASA Solar Technology Application Readiness (NSTAR) ion engine has been used with photovoltaic solar panels, which was tested on the Deep Space 1 mission along with Solar Concentrator Arrays (Launched in 1998 as part of the New Millennium Program). [6] [7]
Cosmos 1 was a project by Cosmos Studios and The Planetary Society to test a solar sail in space. As part of the project, an uncrewed solar-sail spacecraft named Cosmos 1 was launched into space at 19:46:09 UTC (15:46:09 EDT) on 21 June 2005 from the submarine Borisoglebsk in the Barents Sea.