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S-Series (rocket family)

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S-Series is a fleet of sounding rockets funded by the Japan Aerospace Exploration Agency (JAXA) that have been in service since the late 1960s. Manufactured by IHI Aerospace and operated by the Institute of Space and Astronautical Science (ISAS). The nomenclature of the S-Series rockets is the number of "S"s indicates the number of stages, and the following number details the diameter of the craft in millimeters. For example, the S-310 is a single stage rocket with a diameter of 310 mm.

S-Series
Comparison of Japanese sounding rockets
FunctionSounding rocket
ManufacturerIHI Aerospace
Country of originJapan
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On January 14, 2017, the SS-520-4 rocket (modified sounding rocket) attempted to become the lightest and smallest launch vehicle to send a payload to orbit,[1] however, the rocket failed to reach orbit.[2] A second attempt was made on February 3, 2018. This time, the rocket reached orbit and successfully deployed TRICOM-1R (Tasuki), a 3U CubeSat.[3] Its 2018 launch made it the smallest orbital rocket both in mass and height.[4]

S-Series rocket family
Model Gross mass Height Diameter Apogee
S-210 300 kg (660 lb) 5.20 m (17.1 ft) 0.21 m (0.69 ft) 110 km (68 mi)
S-310 700 kg (1,540 lb) 6.80 m (22.30 ft) 0.31 m (1.01 ft) 190 km (110 mi)
S-520 2,300 kg (5,000 lb) 9.00 m (29.50 ft) 0.52 m (1.70 ft) 430 km (260 mi)
SS-520 2,600 kg (5,700 lb) 9.70 m (31.80 ft) 0.52 m (1.70 ft) 1,000 km (600 mi)

S-160

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S-160 Rocket (S-160JA-1). Exhibit in the National Museum of Nature and Science, Tokyo

A retired single stage Japanese sounding rocket. The S-160 had a maximum flight altitude of 80 kilometers, a launch mass of 100 kg, a diameter of 160 mm and a length of 4 meters. It was launched 13 times between 1965 and 1972.


S-210

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A retired single-stage sounding rocket developed by the Institute of Space and Aeronautical Science of the University of Tokyo, predecessor of the Institute of Space and Astronautical Science (ISAS), to study the ionosphere. A variant S-210JA was launched from Japan's Antarctic base.[5] The first S-210 launch took place in 1966, and was retired in 1982. The first two launches of the full sized versions in took place between 1966 and 1967: they were both failures, with the motor case burning through. After redesign of the case and improved quality control the subsequent launch in August 1969 was successful. Following further successful tests in Japan in 1970–1971, the rocket was cleared for intensive use at the Japanese Antarctic base at Syowa in 1972–1978.[6]

The S-210, like other rockets in the series, used a solid rocket motor. The propellant grain of the motor included Hydroxyl-terminated polybutadiene (HTPB) binder, making it better suited for the cold temperatures of the Antarctic launch site.[7]

  • Gross mass: 300 kg (660 lb)
  • Height: 5.20 m (17.1 ft)
  • Diameter: 0.21 m (0.69 ft)
  • Apogee: 110 km (68 mi)

It was built to replace the smaller S-160 rocket which was a proof-of-concept design rocket.

S-310

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A full-scale model of the S-310 rocket No.1 set on a launcher. (JAXA/ISAS Uchinoura Space Center KS Center)

The S-310 is an active single-stage sounding rocket. Like its predecessor the S-210 it was developed for observations in Antarctica. The rocket is 310 mm in diameter, and can reach an altitude of 150 km.[8] The first flight of S-310 in January 1975 was successful, and it has been launched at Kagoshima Space Center at Uchinoura, Showa Station in Antarctica and Andøya in Norway. As of January 10, 2020 the S-310 has completed 57 sub-orbital launches, with its most recent launch occurring on January 9, 2020.

  • Gross mass: 700 kg (1,540 lb)
  • Height: 6.80 m (22.30 ft)
  • Diameter: 0.31 m (1.01 ft)
  • Apogee: 190 km (110 mi)


S-520

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A full-scale model of the S-520 rocket No.1. (JAXA/ISAS Uchinoura Space Center KS Center)

The S-520 was developed to replace the K-9M and K-10 type sounding rockets. It is an active single-stage sounding rocket capable of launching a 100 kg payload above 300 km and provided more than five minutes of micro-gravity flight for experiments. The first launch took place in 1980, and most recently flew on 11 November 2024 (UTC).[9]

  • Gross mass: 2,300 kg (5,000 lb)
  • Unfueled mass: 400 kg (880 lb)
  • Burn time: 29 s
  • Height: 9.00 m (29.50 ft)
  • Diameter: 0.52 m (1.70 ft)
  • Apogee: 430 km (260 mi)


SS-520

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This version is a two-stage sounding rocket or three-stage orbital rocket, which uses S-520 as the first stage. Unlike the previous S-Series rockets, the SS-520 is intended to demonstrate how small an orbital launch vehicle can be.[10][citation needed]

When used as a suborbital sounding rocket, it can launch a 140 kilograms (310 lb) payload to an altitude between 800 and 1000 km.[11] The first two SS-520s were launched in 1998 and 2000 respectively and successfully carried their payloads on sub-orbital missions.[12]

After further development and the addition of a third stage, the fourth and fifth instances of the SS-520 were launched on full orbital trajectories.

  • Gross mass: 2,600 kg (5,700 lb)
  • Height: 9.70 m (31.80 ft)
  • Diameter: 0.52 m (1.70 ft)
  • Apogee: 1,000 km (600 mi)

SS-520-4

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This is the fourth vehicle configuration of the SS-520. It includes a small third stage, and is engineered to place the payload into an orbital speed of more than 27,000 km/h (17,000 mph), to put a 4 kg (8.8 lb) 3U CubeSat into a 180 km × 1,500 km (110 mi × 930 mi) orbit with an inclination of 31°. It is a technology demonstration with no serial production planned.[13][14] It was launched January 14, 2017, but failed to reach orbit due to a loss of telemetry.[2] If successful, it would have become the smallest and lightest vehicle to ever put an object in orbit; surpassing the Japanese Lambda-4S.[15] Telemetry was lost 20 seconds into flight. 3 minutes into the flight, controllers sent an abort code commanding the second stage not to ignite after separation and the rocket fell into the ocean within the range safety area.[2]

SS-520-5

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The second attempt at becoming the smallest orbital launching rocket was made on 3 February 2018. Liftoff from Uchinoura Space Center occurred at the opening of a ten-minute window at 14:03 local time (05:03 UTC), successfully deploying the TRICOM-1R CubeSat.[4][3][16][17]

Specifications

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  • Height – 31 feet (9.54 meters)
  • Weight – 2.9 tons (2.6 metric tons)
  • Diameter – 20 inches (52 centimeters)
  • Payload to Low-Earth Orbit – ~9 lbs (4 kg)

Launch history (SS-520 series)

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Vehicle Serial Date (d/m/y) Orbital/Suborbital Launch pad Payload Outcome
SS-520 SS-520-1 5 February 1998 Suborbital Kagoshima Space Center ENA/EPS/LAP Success
SS-520 SS-520-2 4 December 2000 Suborbital Svalbard Rocket Range Ion Outflow Success
SS-520 SS-520-4 14 January 2017 Orbital Kagoshima Space Center TRICOM-1 Failed to reach orbit[2]
SS-520 SS-520-5 3 February 2018 Orbital Kagoshima Space Center TRICOM-1R (Tasuki) Success[3]
SS-520 SS-520-3 4 November 2021 Suborbital Svalbard Rocket Range Ion Outflow (GCI Cusp) Success[18]

References

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  1. ^ "Satnews Publishers: Daily Satellite News". www.satnews.com. Archived from the original on 2017-01-12. Retrieved 2017-01-12.
  2. ^ a b c d "Experimental Launch of World's Smallest Orbital Space Rocket ends in Failure". 14 January 2017. Archived from the original on 2017-07-22. Retrieved 2017-01-15.
  3. ^ a b c "Japón lanza con éxito un minicohete que logra poner en órbita un microsatélite". NHK World. 3 February 2018. Archived from the original on 4 February 2018. Retrieved 3 February 2018.
  4. ^ a b Graham, William (3 February 2018). "Japanese sounding rocket claims record-breaking orbital launch". NASA Spaceflight. Archived from the original on 9 November 2020. Retrieved 3 February 2018.
  5. ^ Murayama, Masayoshi; Kusunoki, Kou; Kawaguchi, Sadao (March 1972). "昭和基地における観測ロケット計画(日本南極地域観測隊の報告)" [Japanese Sounding Rocket Programme at Syowa Station, Antarctica (Reports of the Japanese Antarctic Research Expedition)]. Antarctic Record. 43. doi:10.15094/00007653.
  6. ^ "S-210". www.astronautix.com. Archived from the original on 2016-12-28. Retrieved 2017-01-12.
  7. ^ "S-210". www.astronautix.com. Archived from the original on 2019-01-08. Retrieved 2018-12-10.
  8. ^ "S-310". space.skyrocket.de. Archived from the original on 2017-01-17. Retrieved 2017-01-12.
  9. ^ "観測ロケットS-520-34号機実験の実施". Japan Aerospace Exploration Agency. Retrieved 21 November 2024.
  10. ^ "SS-520 Nano satellite launcher and its flight result". Archived from the original on 2021-04-17. Retrieved 2021-05-09.
  11. ^ "SS-520 | Sounding Rockets | ISAS". ISAS. Archived from the original on 2017-01-09. Retrieved 2017-01-11.
  12. ^ "Smallest Orbital Launch Vehicle ready for Liftoff from Japan – Spaceflight101". spaceflight101.com. 10 January 2017. Archived from the original on 2017-01-11. Retrieved 2017-01-11.
  13. ^ Krebs, Gunter Dirk. "SS-520". Gunter's Space Page. Archived from the original on 2017-07-22. Retrieved 2024-07-07.
  14. ^ "JAXA Postpones Launch of World's Smallest Space Rocket due to Strong Wind". I4U News. Archived from the original on 2017-01-12. Retrieved 2017-01-12.
  15. ^ Clark, Stephen. "Launch of experimental Japanese rocket scrubbed – Spaceflight Now". Archived from the original on 2017-01-11. Retrieved 2017-01-11.
  16. ^ "SS-520-4 号機" (PDF). Archived (PDF) from the original on 2017-07-09. Retrieved 2017-10-17.
  17. ^ "SS-520 5号機の進捗状況について" (PDF). Archived (PDF) from the original on 2017-10-17. Retrieved 2017-10-17.
  18. ^ "Launch Result of the SS-520-3 Sounding Rocket". JAXA (Press release). 5 November 2021. Archived from the original on 5 November 2021. Retrieved 5 November 2021.
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