fbpx
Wikipedia

Alouette 1

October 19, 2023

For the line of helicopters, see Aérospatiale Alouette.

Alouette 1 is a deactivated Canadian satellite that studied the ionosphere. Launched in 1962, it was Canada's first satellite, and the first satellite constructed by a country other than the Soviet Union or the United States. Canada was the fourth country to operate a satellite, as the British Ariel 1, constructed in the United States by NASA, preceded Alouette 1 by five months.[3] The name "Alouette" came from the French for "skylark"[4] and the French-Canadian folk song of the same name.

Alouette 1
The Alouette 1 satellite
Mission typeIonospheric
OperatorDRDC
Harvard designation1962 Beta Alpha 1
COSPAR ID1962-049A
SATCAT no.424
Mission durationFinal: 10 years and 1 day
Spacecraft properties
ManufacturerDefence Research Telecommunications Establishment
Launch mass145.6 kilograms (321 lb)
Start of mission
Launch dateSeptember 29, 1962, 06:05 (1962-09-29UTC06:05Z) UTC
RocketThor DM-21 Agena-B
Launch siteVandenberg LC-75-1-1
End of mission
DeactivatedSeptember 30, 1972 (1972-10-01)
Orbital parameters
Reference systemGeocentric
RegimeLow Earth
Semi-major axis7,381 kilometres (4,586 mi)[1]
Eccentricity0.00243[2]
Perigee altitude996 kilometres (619 mi)[2]
Apogee altitude1,032 kilometres (641 mi)[2]
Inclination80.500 degrees[2]
Period105.50 minutes[2]
Epoch29 September 1962 06:05:00 UTC[2]
 

A key device on Alouette were the radio antennas consisting of thin strips of beryllium copper bent into a slight U-shape and then rolled up into small disks in a fashion similar to a measuring tape. When triggered, the rotation of the satellite created enough centrifugal force to pull the disk away from the spacecraft body, and the shaping of the metal caused it to unwind into a long spiral. The result was a stiff circular cross-section antenna known as a "STEM", for "storable tubular extendible member".[5]

Development Edit

Alouette 1 was part of a joint Canada-U.S. scientific program.[6] Its purpose was to investigate the properties of the top of the ionosphere, and the dependence of those properties on geographical location, season, and time of day.[7] Alouette 1 was advanced for its time, and NASA initially doubted whether the available technology would be sufficient. Nevertheless, NASA was eager to collaborate with international partners.[8] NASA was convinced to participate by the prospect of obtaining data on the ionosphere, and Canada had the additional objective of developing its own space research programme.[8] The United Kingdom also aided the mission by providing support at two ground stations, in Singapore and at Winkfield.[9]

Experiments Edit

Alouette 1 carried four scientific experiments:

  • Sweep-Frequency Sounder. This experiment measured the electron density distribution in the ionosphere by measuring the time delay between the emission and return of radio pulses.[10] The sounder was able to emit pulses with frequencies between 1 and 12 megahertz, with a power of 100 W.[7]: 50 
  • Energetic particle detectors. An arrangement of Geiger counters and scintillators for detecting energetic particles.[11]
  • VLF Receiver. An experiment for measuring both artificial and natural VLF signals.[12] It was sensitive to frequencies between 400 and 10,000 Hz.[7]: 50 
  • Cosmic Radio Noise. Two long radio antennas used for detecting radio noise from the Sun and the Galaxy.[13]

The satellite did not have a tape recorder to store data.[14] It was only possible to obtain data when the satellite was in range of a receiving station.[15]

Duplicate construction Edit

Two satellites were built for redundancy in case of a malfunction; if the first unit failed, the second could be launched with only a couple of months delay. It took 3½ years after Alouette's proposal to have it developed and built.[16] The satellites S27-2 (prototype), S27-3 (which became the launched satellite), and S27-4 (which became the backup) were assembled by Defence Research Telecommunications Establishment (DRTE) Electronics Lab in Ottawa, Ontario. The mechanical frame and the deployable STEM antennas were made by Special Products and Applied Research Aerospace (SPAR Aerospace), a former division of de Havilland Canada (DHC) in North York, Ontario, in a building which many years later (until 2012) housed the Canadian Air and Space Museum. The batteries used for Alouette were developed by the Defence Chemical, Biological, and Radiation Laboratory (DCBRL), another branch of DRB, and were partially responsible for the long lifetime of the satellite. The "Storable Tubular Extendable Member" antennas used were the first of DHC's STEM antennas used in space, and at launch were the longest (150 feet tip to tip).[17] Companies such as RCA Victor and Spar Aerospace Limited produced some of their first pieces of space equipment for the Alouette 1 project.[18] Parts used for the construction of Alouette 1 can still be found in the Musée des ondes Emile Berliner in Montreal, Quebec where part of the satellite was worked on.[19]

Satellite launch and mission progress Edit

Alouette 1 was launched via Thor-Agena-B two-stage rocket[20] by NASA from the Pacific Missile Range at Vandenberg Air Force Base, California, USA at 06:05 UTC on September 29, 1962, into orbit around Earth. The 145.6 kilograms (321 lb) satellite [21] was placed into an almost circular orbit with an altitude of 987 kilometres (613 mi) to 1,022 kilometres (635 mi) with an inclination of 80.5°.[22] The launch made Canada the third nation, after the USSR and the United States, to design and construct its own satellite.[23] Alouette was used to study the ionosphere, using over 700 different radio frequencies to investigate its properties from above.[24]

The satellite was initially spin-stabilized, rotating 1.4 times per minute. After about 500 days, the rotation had slowed to about 0.6 rpm and the spin-stabilization failed at this point. It was then possible to determine the satellite's orientation only by readings from a magnetometer and from temperature sensors on the upper and lower heat shields.[14] The orientation determinations obtained this way were only accurate to within 10 degrees. It is likely that gravitational gradients had caused the longest antenna to point towards the Earth.[15]

A 2010 technical report by the US Defense Threat Reduction Agency titled "Collateral Damage to Satellites from an EMP Attack"[25] lists Alouette 1 among the satellites damaged by residual radiation from the July 9, 1962, Starfish Prime high-altitude nuclear test conducted by the United States. Another article, titled "Anthropogenic Space Weather",[26] indicates Alouette 1 sustained no significant adverse effects from the Starfish radiation, most likely due to a very conservative power supply design that allowed for a 40% degradation of solar cell performance.

Alouette's mission lasted for 10 years before the satellite was deliberately switched off on September 30, 1972.[27] The satellite remains in orbit; in 1966 it was estimated that Alouette 1 would remain in orbit for 1000 years.[28]

Post mission Edit

After Alouette 1 was launched, the upper stage of the rocket used to launch the satellite became a derelict object that would continue to orbit Earth for many years. As of 2022, the upper stage remains in orbit.[29]

The satellite itself became a derelict, remaining in Earth orbit As of 2022. [30]

The Alouette 1 was named an IEEE Milestone in 1993.[31] It is featured on the Amory Adventure Award.

Alouette 1's backup was later launched, with some modification, as Alouette 2 in 1965 to "replace" the older Alouette 1.[32]

See also Edit

References Edit

  1. ^ "ALOUETTE 1 (S-27)". N2YO.com. April 26, 2016. Retrieved April 26, 2016.
  2. ^ a b c d e f "Alouette 1 – Trajectory Information". NASA NSSDCA. Retrieved January 1, 2023.
  3. ^ Palimaka, John. . IEEE. Archived from the original on March 3, 2016. Retrieved April 18, 2014.
  4. ^ Helen T. Wells; Susan H. Whiteley; Carrie E. Karegeannes. Origin of NASA Names. NASA Science and Technical Information Office. p. 10.
  5. ^ "Antenna material". Ingenium. Retrieved July 23, 2018.
  6. ^ Houghton, J. T.; Taylor, F. W.; Rodgers, C. D. (March 27, 1986), Remote Sounding of Atmospheres, Cambridge Planetary Science Series, vol. 5, Cambridge University Press, p. 234, ISBN 0521310652
  7. ^ a b c Kramer, Herbert J. (2002). Observation of the Earth and its Environment: Survey of Missions and Sensors (4 ed.). Berlin: Springer. p. 50. ISBN 3540423885.
  8. ^ a b Rakobowchuk, Peter (September 8, 2012), "NASA once thought Canada's famed Alouette-1 satellite was too ambitious: space engineer", National Post, retrieved May 1, 2015
  9. ^ Le Galley, Donald P. (1964), "1", in Le Galley, Donald P.; Rosen, Alan (eds.), Space Physics, Univer1sity of California Engineering and Physical Sciences Extension Series, John Wiley and Sons, p. 36
  10. ^ "Sweep-Frequency Sounder". NASA. August 26, 2014. Retrieved September 30, 2014.
  11. ^ "Energetic Particles Detectors". NASA. August 26, 2014. Retrieved September 30, 2014.
  12. ^ "VLF Receiver". NASA. August 26, 2014. Retrieved September 30, 2014.
  13. ^ "Cosmic Radio Noise". NASA. August 26, 2014. Retrieved September 30, 2014.
  14. ^ a b Angelo, Joseph A. (2006). Encyclopedia of Space and Astronomy. New York: Infobase Publishing. p. 22. ISBN 978-0-8160-5330-8.
  15. ^ a b Grayzeck, Ed (August 26, 2014). "Alouette 1". NASA. Retrieved April 18, 2014.
  16. ^ . Archived from the original on July 19, 2012. Retrieved July 6, 2012.
  17. ^ "The Alouette Program". Online Journal of Space Communication. Ohio University. 4. Retrieved January 1, 2023.
  18. ^ Agency, Canadian Space (March 5, 2012). "Satellite Alouette I and II". Canadian Space Agency. Retrieved August 16, 2022.
  19. ^ "Magic of Waves in Saint-Henri". Musée des ondes Emile Berliner. Retrieved August 16, 2022.
  20. ^ McDowell, Jonathan. "Launch Log". Jonathan's Space Report. Retrieved October 11, 2020.
  21. ^ Saxena, Ashok K. (1978), "Appendix 1", in Wertz, James R. (ed.), Spacecraft Attitude Determination and Control, Astrophysics and Space Science Library, vol. 73, Dordrecht, Holland: D. Reidel Publishing Company, pp. 788–789, ISBN 90-277-0959-9
  22. ^ Darling, David (June 3, 2003). The Complete Book of Spaceflight: From Apollo 1 to Zero Gravity. Hoboken, New Jersey: John Wiley & Sons. ISBN 0471056499.
  23. ^ "Alouette I and II". Canadian Space Agency. March 3, 2012.
  24. ^ Gainor, Chris (2012), Alouette 1 – Celebrating 50 Years of Canada in Space, SpaceRef, archived from the original on April 17, 2015
  25. ^ Conrad, Edward E., et al. "Collateral Damage to Satellites from an EMP Attack" Report DTRA-IR-10-22, Defense Threat Reduction Agency. August 2010 [1] (Retrieved May 27, 2019)
  26. ^ T. I. Gombosi., et al. "Anthropogenic Space Weather" Space Science Reviews. 10.1007 (Page 26, Table 2) [2] (Retrieved May 27, 2019)
  27. ^ Baker, David (2004). Jane's Space Directory. Jane's Information Group. p. 471.
  28. ^ "Space trash, and an inventory of hardware in orbit". LIFE. Vol. 61, no. 6. 1966. p. 29.
  29. ^ "Alouette 1 Rocket – Satellite Information". satellite database. Heavens-Above. Retrieved September 25, 2013.
  30. ^ "Alouette 1 – Satellite Information". satellite database. Heavens-Above. Retrieved September 25, 2013.
  31. ^ "Milestones:Alouette-ISIS Satellite Program, 1962". IEEE Global History Network. IEEE. Retrieved July 29, 2011.
  32. ^ "The ISIS Satellite Program". friendsofcrc.ca. July 19, 1996. Retrieved February 26, 2017.

External links Edit

  • 1962-049A also known as 1962-Beta-Alpha-1 entry at NSSDC
  • CSA Alouette Site
  • CBC Digital Archives – Launching the Digital Age: Canadian Satellites
  • https://moeb.ca

October 19, 2023
alouette, line, helicopters, aérospatiale, alouette, deactivated, canadian, satellite, that, studied, ionosphere, launched, 1962, canada, first, satellite, first, satellite, constructed, country, other, than, soviet, union, united, states, canada, fourth, coun. For the line of helicopters see Aerospatiale Alouette Alouette 1 is a deactivated Canadian satellite that studied the ionosphere Launched in 1962 it was Canada s first satellite and the first satellite constructed by a country other than the Soviet Union or the United States Canada was the fourth country to operate a satellite as the British Ariel 1 constructed in the United States by NASA preceded Alouette 1 by five months 3 The name Alouette came from the French for skylark 4 and the French Canadian folk song of the same name Alouette 1The Alouette 1 satelliteMission typeIonosphericOperatorDRDCHarvard designation1962 Beta Alpha 1COSPAR ID1962 049ASATCAT no 424Mission durationFinal 10 years and 1 daySpacecraft propertiesManufacturerDefence Research Telecommunications EstablishmentLaunch mass145 6 kilograms 321 lb Start of missionLaunch dateSeptember 29 1962 06 05 1962 09 29UTC06 05Z UTCRocketThor DM 21 Agena BLaunch siteVandenberg LC 75 1 1End of missionDeactivatedSeptember 30 1972 1972 10 01 Orbital parametersReference systemGeocentricRegimeLow EarthSemi major axis7 381 kilometres 4 586 mi 1 Eccentricity0 00243 2 Perigee altitude996 kilometres 619 mi 2 Apogee altitude1 032 kilometres 641 mi 2 Inclination80 500 degrees 2 Period105 50 minutes 2 Epoch29 September 1962 06 05 00 UTC 2 A key device on Alouette were the radio antennas consisting of thin strips of beryllium copper bent into a slight U shape and then rolled up into small disks in a fashion similar to a measuring tape When triggered the rotation of the satellite created enough centrifugal force to pull the disk away from the spacecraft body and the shaping of the metal caused it to unwind into a long spiral The result was a stiff circular cross section antenna known as a STEM for storable tubular extendible member 5 Contents 1 Development 1 1 Experiments 1 2 Duplicate construction 2 Satellite launch and mission progress 3 Post mission 4 See also 5 References 6 External linksDevelopment EditAlouette 1 was part of a joint Canada U S scientific program 6 Its purpose was to investigate the properties of the top of the ionosphere and the dependence of those properties on geographical location season and time of day 7 Alouette 1 was advanced for its time and NASA initially doubted whether the available technology would be sufficient Nevertheless NASA was eager to collaborate with international partners 8 NASA was convinced to participate by the prospect of obtaining data on the ionosphere and Canada had the additional objective of developing its own space research programme 8 The United Kingdom also aided the mission by providing support at two ground stations in Singapore and at Winkfield 9 Experiments Edit Alouette 1 carried four scientific experiments Sweep Frequency Sounder This experiment measured the electron density distribution in the ionosphere by measuring the time delay between the emission and return of radio pulses 10 The sounder was able to emit pulses with frequencies between 1 and 12 megahertz with a power of 100 W 7 50 Energetic particle detectors An arrangement of Geiger counters and scintillators for detecting energetic particles 11 VLF Receiver An experiment for measuring both artificial and natural VLF signals 12 It was sensitive to frequencies between 400 and 10 000 Hz 7 50 Cosmic Radio Noise Two long radio antennas used for detecting radio noise from the Sun and the Galaxy 13 The satellite did not have a tape recorder to store data 14 It was only possible to obtain data when the satellite was in range of a receiving station 15 Duplicate construction Edit Two satellites were built for redundancy in case of a malfunction if the first unit failed the second could be launched with only a couple of months delay It took 3 years after Alouette s proposal to have it developed and built 16 The satellites S27 2 prototype S27 3 which became the launched satellite and S27 4 which became the backup were assembled by Defence Research Telecommunications Establishment DRTE Electronics Lab in Ottawa Ontario The mechanical frame and the deployable STEM antennas were made by Special Products and Applied Research Aerospace SPAR Aerospace a former division of de Havilland Canada DHC in North York Ontario in a building which many years later until 2012 housed the Canadian Air and Space Museum The batteries used for Alouette were developed by the Defence Chemical Biological and Radiation Laboratory DCBRL another branch of DRB and were partially responsible for the long lifetime of the satellite The Storable Tubular Extendable Member antennas used were the first of DHC s STEM antennas used in space and at launch were the longest 150 feet tip to tip 17 Companies such as RCA Victor and Spar Aerospace Limited produced some of their first pieces of space equipment for the Alouette 1 project 18 Parts used for the construction of Alouette 1 can still be found in the Musee des ondes Emile Berliner in Montreal Quebec where part of the satellite was worked on 19 Satellite launch and mission progress EditAlouette 1 was launched via Thor Agena B two stage rocket 20 by NASA from the Pacific Missile Range at Vandenberg Air Force Base California USA at 06 05 UTC on September 29 1962 into orbit around Earth The 145 6 kilograms 321 lb satellite 21 was placed into an almost circular orbit with an altitude of 987 kilometres 613 mi to 1 022 kilometres 635 mi with an inclination of 80 5 22 The launch made Canada the third nation after the USSR and the United States to design and construct its own satellite 23 Alouette was used to study the ionosphere using over 700 different radio frequencies to investigate its properties from above 24 The satellite was initially spin stabilized rotating 1 4 times per minute After about 500 days the rotation had slowed to about 0 6 rpm and the spin stabilization failed at this point It was then possible to determine the satellite s orientation only by readings from a magnetometer and from temperature sensors on the upper and lower heat shields 14 The orientation determinations obtained this way were only accurate to within 10 degrees It is likely that gravitational gradients had caused the longest antenna to point towards the Earth 15 A 2010 technical report by the US Defense Threat Reduction Agency titled Collateral Damage to Satellites from an EMP Attack 25 lists Alouette 1 among the satellites damaged by residual radiation from the July 9 1962 Starfish Prime high altitude nuclear test conducted by the United States Another article titled Anthropogenic Space Weather 26 indicates Alouette 1 sustained no significant adverse effects from the Starfish radiation most likely due to a very conservative power supply design that allowed for a 40 degradation of solar cell performance Alouette s mission lasted for 10 years before the satellite was deliberately switched off on September 30 1972 27 The satellite remains in orbit in 1966 it was estimated that Alouette 1 would remain in orbit for 1000 years 28 Post mission EditAfter Alouette 1 was launched the upper stage of the rocket used to launch the satellite became a derelict object that would continue to orbit Earth for many years As of 2022 update the upper stage remains in orbit 29 The satellite itself became a derelict remaining in Earth orbit As of 2022 update 30 The Alouette 1 was named an IEEE Milestone in 1993 31 It is featured on the Amory Adventure Award Alouette 1 s backup was later launched with some modification as Alouette 2 in 1965 to replace the older Alouette 1 32 See also EditTimeline of artificial satellites and space probes Prince Albert Radar Laboratory used as the initial ground station References Edit ALOUETTE 1 S 27 N2YO com April 26 2016 Retrieved April 26 2016 a b c d e f Alouette 1 Trajectory Information NASA NSSDCA Retrieved January 1 2023 Palimaka John The 30th Anniversary of Alouette I IEEE Archived from the original on March 3 2016 Retrieved April 18 2014 Helen T Wells Susan H Whiteley Carrie E Karegeannes Origin of NASA Names NASA Science and Technical Information Office p 10 Antenna material Ingenium Retrieved July 23 2018 Houghton J T Taylor F W Rodgers C D March 27 1986 Remote Sounding of Atmospheres Cambridge Planetary Science Series vol 5 Cambridge University Press p 234 ISBN 0521310652 a b c Kramer Herbert J 2002 Observation of the Earth and its Environment Survey of Missions and Sensors 4 ed Berlin Springer p 50 ISBN 3540423885 a b Rakobowchuk Peter September 8 2012 NASA once thought Canada s famed Alouette 1 satellite was too ambitious space engineer National Post retrieved May 1 2015 Le Galley Donald P 1964 1 in Le Galley Donald P Rosen Alan eds Space Physics Univer1sity of California Engineering and Physical Sciences Extension Series John Wiley and Sons p 36 Sweep Frequency Sounder NASA August 26 2014 Retrieved September 30 2014 Energetic Particles Detectors NASA August 26 2014 Retrieved September 30 2014 VLF Receiver NASA August 26 2014 Retrieved September 30 2014 Cosmic Radio Noise NASA August 26 2014 Retrieved September 30 2014 a b Angelo Joseph A 2006 Encyclopedia of Space and Astronomy New York Infobase Publishing p 22 ISBN 978 0 8160 5330 8 a b Grayzeck Ed August 26 2014 Alouette 1 NASA Retrieved April 18 2014 Canada 50 years in space Canadian Geographic Archived from the original on July 19 2012 Retrieved July 6 2012 The Alouette Program Online Journal of Space Communication Ohio University 4 Retrieved January 1 2023 Agency Canadian Space March 5 2012 Satellite Alouette I and II Canadian Space Agency Retrieved August 16 2022 Magic of Waves in Saint Henri Musee des ondes Emile Berliner Retrieved August 16 2022 McDowell Jonathan Launch Log Jonathan s Space Report Retrieved October 11 2020 Saxena Ashok K 1978 Appendix 1 in Wertz James R ed Spacecraft Attitude Determination and Control Astrophysics and Space Science Library vol 73 Dordrecht Holland D Reidel Publishing Company pp 788 789 ISBN 90 277 0959 9 Darling David June 3 2003 The Complete Book of Spaceflight From Apollo 1 to Zero Gravity Hoboken New Jersey John Wiley amp Sons ISBN 0471056499 Alouette I and II Canadian Space Agency March 3 2012 Gainor Chris 2012 Alouette 1 Celebrating 50 Years of Canada in Space SpaceRef archived from the original on April 17 2015 Conrad Edward E et al Collateral Damage to Satellites from an EMP Attack Report DTRA IR 10 22 Defense Threat Reduction Agency August 2010 1 Retrieved May 27 2019 T I Gombosi et al Anthropogenic Space Weather Space Science Reviews 10 1007 Page 26 Table 2 2 Retrieved May 27 2019 Baker David 2004 Jane s Space Directory Jane s Information Group p 471 Space trash and an inventory of hardware in orbit LIFE Vol 61 no 6 1966 p 29 Alouette 1 Rocket Satellite Information satellite database Heavens Above Retrieved September 25 2013 Alouette 1 Satellite Information satellite database Heavens Above Retrieved September 25 2013 Milestones Alouette ISIS Satellite Program 1962 IEEE Global History Network IEEE Retrieved July 29 2011 The ISIS Satellite Program friendsofcrc ca July 19 1996 Retrieved February 26 2017 External links Edit1962 049A also known as 1962 Beta Alpha 1 entry at NSSDC CSA Alouette Site Canada s Digital Collections government website About Alouette CBC Digital Archives Launching the Digital Age Canadian Satellites Article on satellite development based on interviews with original research engineers https moeb ca Portals nbsp Astronomy nbsp Stars nbsp Spaceflight nbsp Outer space nbsp Solar System Retrieved from https en wikipedia org w index php title Alouette 1 amp oldid 1146216177, wikipedia, wiki, book, books, library,

article

, read, download, free, free download, mp3, video, mp4, 3gp, jpg, jpeg, gif, png, picture, music, song, movie, book, game, games.