HELSINKI — A Chinese launch vehicle maker is working on designs for an air-launched rocket for sending small satellites to orbit.
The system is being designed by the China Academy of Launch Vehicle Technology (CALT) to deliver a payload of up to 300 kilograms to a 500-km-altitude sun-synchronous orbit (SSO).
The three-stage air-launched rocket would weigh approximately 20,000 kilograms. It would fly on a carrier aircraft to an altitude of about 11.9 kilometers, reaching speeds of Mach 0.8 before being released.
The system is designed to provide “flexible, affordable and dedicated launch” for small satellites, according to an abstract submitted to Lyu Yan of CALT at the 74th International Astronautical Congress in Baku, Azerbaijan in October.
CALT is a major rocket developer under China’s state-owned main space contractor, CASC. It is one of two entities, along with the Shanghai Academy of Spaceflight Technology (SAST), which make Long March rockets.
Such a system would potentially provide China with a flexible and economical option for launching small satellites. It would be able to take off horizontally from runways and not require access to China’s spaceports. The latter are currently a bottleneck for Chinese access to space and growing demand for launch.
CALT earlier stated it is working on an air-launched rocket. It was reported to be working with Ukrainian companies on the project. Plans from 2017 note that a Y-20 strategic transport plane would be used in the system. The rocket which would have a payload capacity of 100 kg. A larger, 200 kg rocket was also mooted. Both would be solid-fuelled rockets.
The new design rocket offers a higher payload capacity and first stage reusability using an air rudder. “The air rudder recovery technology does not require the first-stage engine to have re-lighting and thrust adjustment functions, making it easier to design and manufacture,” according to the abstract.
“Based…
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