Issue 36

02 Flash Archive · Members Only

China Launches Shiyan 11 on KZ-1A Commercial Rocket

ExSpace launched the experimental Shiyan-11 satellite on a commercial Kuaizhou-1A rocket on 24 November 2021.

Author Minhas Published December 6, 2021

24 Nov 2021: China’s commercial ExSpace launched a Kuaizhou-1A rocket with the experimental Shiyan-11 satellite from the Jiuquan Satellite Launch Center in the Gobi Desert. This is believed to be the first launch of a government/defense satellite using a commercial launch provider. Launch Video.

– The Kuaizhou-1 is based on the Dongfeng 21 (DF-21) intermediate range ballistic missile and uses solid propellant for its first three stages, with a liquid-fueled fourth stage to inject satellites into orbit. It made its first flight in 2013, with the commercial version known as Kuaizhou-1A first flying in January 2017.

– Launch cadence for the KZ-1A has increased considerably following a 1-year grounding following a Sep 2020 failure. The 24 Nov launch was the 13th KZ-1A launch (12 successful), and third since Sep 2021.

– Kuaizhou rockets typically launch commercial payloads, such as Jilin-1 satellites for Changguang Satellite Technology.

– The KZ-1A is designed to launch after being set up by a transporter-erector launcher (TEL) vehicle, and has minimal infrastructure requirements which are claimed to bring substantial cost savings.

– Little is known about the Shiyan-11 payload, only that it is for technology development. However, given its sun-synchronous orbit (489 x 502 km x 97.5 deg), a reasonable hypothesis is that Shiyan-11 could be used to test Earth imaging systems or radar mapping. Other Shiyan series spacecraft have been used to test experimental technologies in different orbits.

The Kuaizhou-1A can launch up to 300 kilograms to low Earth orbit or 250 kilograms to a 500-kilometer sun-synchronous orbit at an advertised price point of $20,000 per kilogram. ExPace is planning for the potential of multiple additional Kuaizhou-1A launches before the end of this year, along with the second launch of the Kuaizhou-11 which can carry heavier payloads up to 1500 kg to low Earth orbit.

Shiyan 11 launch on Kuaizhou-1A.

Shiyan 11 sun-synchronous orbit.

04 Flash Archive · Members Only

Eye-Spy: China Launches Gaofen 11-03 Satellite

Gaofen 11-03, China’s third high-resolution optical Gaofen 11 satellite, was launched from Taiyuan on 20 November 2021.

Author Minhas Published December 6, 2021

20 Nov 2021: China launched the Gaofen (GF) 11-03 imaging satellite using its Chang Zheng-4B rocket. The launch took place from the Taiyuan Satellite Launch Center. This is China’s 44th orbital mission of 2021. Launch Video.

– Gaofen 11-03 is the third in a series of high-resolution optical imaging Gaofen 11 satellites. The full capabilities of the Gaofen 11 spacecraft have not been published.

– GF 11-03 was placed in a 243 x 695 km x 97.5 deg orbit and expected to circularize over the next 5-6 months. GF 11-01 and GF 11-02 operate in orbits between 490-500km.

– Gaofen 11 satellites likely form the optical high-resolution component of the state-sponsored China High-definition Earth Observation System (CHEOS) constellation. CHEOS is unrelated to the smaller commercial Jilin-1 Gaofen satellites.

– Gaofen 11-01 was launched in July 2016. This was followed by Gaofen 11-02 in Sep 2020.

– Gaofen 11 satellites operate in sun-synchronous orbits, with a perigee of approximately 450km, apogee of around 690km, and 97.4 degree inclination.

Open Source analysis from 2018 estimated GF-11’s mirror size at 1.7m. A mirror of this size equates to a ground resolution of 8-10cm at perigee (~247km). At an average altitude of 470km, the resolution is still 15-20cm, surpassing all commercial and most reconnaissance satellites. This propels China into the select club of countries that can acquire NIIRS 8-9 satellite imagery, meaning the resolution is high enough to identify small hand-held weapons.

Gaofen 11-03 mission infographic.

Gaofen 11-03 mission patch.

Gaofen 11-03 launch.

Growing Gaofen 11 constellation: GF 11-01, GF 11-02 and GF 11-03.

05 Flash Archive · Members Only

Russia Launches Newest Missile Warning Satellite

Russia launched a classified payload believed to be the fifth EKS/Tundra missile-warning satellite into a Molniya orbit on 25 November 2021.

Author Minhas Published December 6, 2021

25 Nov 2021: Russia launched a Soyuz-2-1b rocket from Plesetsk carrying a classified payload believed to be the fifth Kupol (EKS-5 or Tundra-5) missile warning satellite. As with other missile warning spacecraft, Russia placed the new satellite into a Highly Elliptical Orbit (HEO) to maximize dwell time over the northern hemisphere. See previous FFF article.

– No official information on the nature of the payload has been released but the ground track of the launch matched previous missions delivering satellites known as Tundra or Kupol.

– The overall network is officially known as EKS OiBU for Edinaya Kosmicheskaya Sistema Obnaruzheniya i Boevogo Upravleniya, which can be translated as “Integrated Space System for Detection and Battle Command” or EKS for short.

– EKS satellites are believed to have infrared telescopes designed to detect heat sources which may indicate the launch of a missile. Other instruments on the satellite include optical and ultraviolet equipment to gather further data.

– EKS-5 was launched into a Molniya orbit of around 38500 x 1600km, 63.5 degrees. This is a HEO so that Tundra satellites spend much of their time around apogee. The four previous EKS satellites have also been sent to a similar orbit so the same is expected for Tundra 5. Furthermore, another five of these early warning system satellites are set to be launched by an unknown date to complete the EKS series.

– EKS satellites also carry Balka, a nuclear explosion detection payload.

In the Soviet era, there were no more than 9 simultaneously operating HEO satellites. More HEO satellites will be launched in the coming years. In Nov 2015, the Russian Ministry of Defense said the ultimate goal was to have a constellation of ten satellites. During 2020, Russian military officials promised to complete the deployment of the EKS constellation by 2024.

These may all be the Tundra HEO satellites as the GEO satellites lag far behind and may still be in the design phase. Satellites are only one element of the country’s early warning system. Russia also possesses a large network of ground-based early warning radars, having been spectacularly upgraded over the past 15 years to provide coverage of all potential attack zones, a capability never achieved in Russia/Soviet history.

EKS-5 / Tundra-5 launch from Plesetsk.

EKS 5 in Highly Elliptical Orbit.

EKS constellation orbital visualization.

Only known public image of an EKS satellite.

06 Flash Archive · Members Only

Pics o’ the week!

Pics o' the week: a lunar far-side radio telescope concept, DART, Artemis vs. ILRS, and a Rosetta image of a roughly 1 km cliff on comet 67P/Churyumov–Gerasimenko.

Author Minhas Published December 6, 2021

NASA plans to install an ultra-long-wavelength radio telescope inside a crater on the far side of the Moon (artist rendition).

DART Prepares for Take-Off

DART asteroid-deflection cartoon.

ARTEMIS vs. ILRS

Why we space: ~1km cliff on a comet. 2014 image from ESA_Rosetta mission to comet 67P/Churyumov–Gerasimenko.