Foton (or Photon) is the project name of two series of Russian science

satellite A satellite or artificial satellite is an object intentionally placed into orbit in outer space. Except for passive satellites, most satellites have an electricity generation system for equipment on board, such as solar panels or radioi ...

and reentry vehicle programs. Although uncrewed, the design was adapted from the crewed

Vostok spacecraft Vostok (russian: Восток, translated as "East") was a class of single-pilot crewed spacecraft built by the Soviet Union. The first human spaceflight was accomplished with Vostok 1 on April 12, 1961, by Soviet cosmonaut Yuri Gagarin. The ...

capsule. The primary focus of the Foton project is materials science research, but some missions have also carried experiments for other fields of research including

biology Biology is the scientific study of life. It is a natural science with a broad scope but has several unifying themes that tie it together as a single, coherent field. For instance, all organisms are made up of cells that process hereditary i ...

. The original Foton series included 12 launches from the

Plesetsk Cosmodrome Plesetsk Cosmodrome ( rus, Космодром «Плесецк», r=Kosmodrom "Plesetsk", p=kəsmɐˈdrom plʲɪˈsʲet͡sk) is a Russian spaceport located in Mirny, Arkhangelsk Oblast, about 800 km north of Moscow and approximately 200 ...

from 1985 to 1999. The second series, under the name Foton-M, incorporates many design improvements over the original Foton, and is still in use. So far, there have been four launch attempts of the Foton-M. The first was in 2002 from the

, which ended in failure due to a problem in the launch vehicle. The last three were from the Baikonur Cosmodrome, in 2005, 2007, and 2014; all were successful. Both the Foton and Foton-M series used

Soyuz-U The Soyuz-U launch vehicle was an improved version of the original Soyuz rocket. Soyuz-U was part of the R-7 family of rockets based on the R-7 Semyorka missile. Members of this rocket family were designed by the TsSKB design bureau and cons ...

(11A511U and 11A511U2) rockets as launch vehicles. Starting with the Foton-7 mission, the European Space Agency has been a partner in the Foton program.

Foton-M

Foton-M is a new generation of Russian robotic spacecraft for research conducted in the microgravity environment of Earth

orbit In celestial mechanics, an orbit is the curved trajectory of an object such as the trajectory of a planet around a star, or of a natural satellite around a planet, or of an artificial satellite around an object or position in space such as ...

. The Foton-M design is based on the design of the Foton, with several improvements including a new

telemetry Telemetry is the in situ collection of measurements or other data at remote points and their automatic transmission to receiving equipment (telecommunication) for monitoring. The word is derived from the Greek roots ''tele'', "remote", an ...

and

telecommand A telecommand or telecontrol is a command sent to control a remote system or systems not directly connected (e.g. via wires) to the place from which the telecommand is sent. The word is derived from ''tele'' = remote (Greek), and ''command'' = to ...

unit for increased data flow rate, increased battery (electricity), battery capacity, and a better thermal control system. It is produced by Progress State Research and Production Rocket Space Center, TsSKB-Progress in Samara, Russia, Samara. The first launch, of Foton-M No.1, Foton-M1, failed because of a malfunction of the

launch vehicle, launcher. The second launch, of Foton-M No.2, Foton-M2, was, however, a success. Foton-M3 was launched on 14 September 2007 carried by a

rocket lifting off from the Baikonur Cosmodrome in Kazakhstan with Nadezhda (cockroach), Nadezhda, a cockroach that was the first Earth creature to produce offspring that had been conceived in space. It returned successfully to Earth on September 26, 2007, landing in Kazakhstan at 7:58 GMT.

Reentry

The Foton capsule has limited thruster capability. As such, the reentry path and orientation can not be controlled after the capsule has separated from the engine system. This means that the capsule has to be protected from reentry heat on all sides, thus explaining the spherical design (as opposed to Project Mercury, Project Mercury's conical design), which allows for maximum volume while minimizing the external surface. However, the lack of lift means the capsule experiences high forces on reentry, up to 8 to 9g.

Foton launches

References

External links

Foton
(from Encyclopedia Astronautica)

{{Use American English, date=January 2014 Astrobiology Soyuz program Earth observation satellites of the Soviet Union Satellites of Russia

Foton-M

Reentry

Foton launches

See also

References

External links