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STRaND-1

STRaND-1
Mission typeTechnology
OperatorSurrey Space Centre
COSPAR ID2013-009E Edit this at Wikidata
SATCAT no.39090
Spacecraft properties
Spacecraft type3U CubeSat
ManufacturerSSTL
Start of mission
Launch date25 February 2013, 12:31 (2013-02-25UTC12:31Z) UTC
RocketPSLV-CA C20
Launch siteSatish Dhawan FLP
ContractorISRO
Orbital parameters
Reference systemGeocentric
RegimeLow Earth

STRaND-1 (Surrey Training, Research and Nanosatellite Demonstrator 1) is a failed 3U CubeSat developed by Surrey University's Surrey Space Centre (SSC) and Surrey Satellite Technology (SSTL). The 4.3 kg (9.5 lb) nanosatellite was launched into orbit on board a PSLV Rocket from India on February 25, 2013,[1][2] Smartphones have flown in space before inside the International Space Station, and the computer from a PDA launched inside two Japanese CubeSats in 2006 and 2008.[3]

STRaND-1 initially operated with a conventional CubeSat computer before it was supposed to be switched over to an on-board Android-based Nexus One smartphone, but the conventional computer stopped communicating before the switch-over could start.[3] As a result, NASA's PhoneSats (Alexander, Graham and Bell) were the first smartphone satellites to work in space,[3] despite having been launched two months later than STRaND-1.[3]

The satellite was found broadcasting telemetry again in June 2013, after a two-month silence.[4] There are no reports of any instrument being turned on.

Design and operation

STRaND-1 is operated by two computers: one is the classic CubeSat computer and second is a Google Nexus One smartphone running the Android operating system.

There was a public contest in August 2011 to create "space apps" to run on various satellite smartphones, including NASA's PhoneSat series. The winning Android app entries for STRaND-1 included an app for magnetic field measurements, satellite telemetry display, an Earth imaging application called 360 App, as well as one app which is purported to allow users to see people scream in space, although the smartphone never properly turned on and the developed apps were never used.[3][5]

The smartphone was intended to provide cameras, accelerometers and high-performance computer processors - almost everything except solar panels and propulsion. During the first phase of the mission, STRaND-1 was intended to use a number of experimental apps to collect data, while a new high-speed Linux-based CubeSat computer developed by SSC takes care of the satellite. During phase two the STRaND team intended to switch the satellite's in-orbit operations to the smartphone, thereby testing the capabilities of a number of standard smartphone components in a space environment.[5] However, the smartphone on board STRaND-1 was never able to turn on, and was not used to control the failed satellite before the computer unexpectedly turned off in March 2013 (phase two was not turned on at this time, and the smartphone never turned on or functioned).[3] On July 23, 2013 Mike Rupprecht DK3WN received signals from the UK STRaND-1 satellite after a near four-month absence.

See also

References

  1. ^ "Smartphone fired into space for test". BBC. 25 February 2013. Retrieved 1 May 2019.
  2. ^ "News & Events | Satellites & Space Missions | Surrey Satellite Technology (SSTL)". Archived from the original on 2013-04-02. Retrieved 2013-04-05.
  3. ^ a b c d e f "NASA's PhoneSats set mark for first smartphone satellites". Spaecflight now. 2013-04-25.
  4. ^ "STRaND-1 | Amateur Radio – PEØSAT".
  5. ^ a b Lindsey, Clark (2013-02-25). "Indian PSLV successfully places seven satellites into orbit". NewSpace Watch. Retrieved 2013-02-25.
Quelle: http://en.wikipedia.org/wiki/STRaND-1