YF-102 (rocket engine)
{{Short description|Rocket engine}}
{{Infobox rocket engine
|name = YF-102
|image =
|image_size =
|caption =
|country_of_origin= China
|date =
|first_date =
|last_date =
|designer =Academy of Aerospace Liquid Propulsion Technology
|manufacturer =
|purpose =
|associated =
|successor =
|status = Active
|type =liquid
|oxidiser =LOX
|fuel =RP-1
|mixture_ratio =
|cycle =Gas-Generator Cycle
|pumps =
|description =
|nozzle_ratio =
|thrust =
|thrust_at_altitude=
|thrust(Vac) =
|thrust(SL) ={{convert|835|kN|lbf|abbr=on}}
|throttle_range = {{convert|620|kN|lbf|abbr=on}} to {{convert|835|kN|lbf|abbr=on}}
|thrust_to_weight=
|chamber_pressure={{convert|8.5|MPa|psi|abbr=on}}
|specific_impulse=
|specific_impulse_vacuum=
|specific_impulse_sea_level={{convert|275.3|isp}}
|total_impulse =
|capacity =
|dimensions =
|length = {{convert|2178|mm|in}}
|diameter =
|dry_weight =
|used_in = Tianlong-2
|references =
|notes =
}}
The YF-102 is a Chinese liquid rocket engine burning LOX and kerosene in a gas generator cycle.{{Cite patent|number=114046213|title=Open type liquid oxygen kerosene engine system and thrust adjusting method thereof|country=CN|pubdate=2022-02-15|assign1=Xian Aerospace Propulsion Institute|inventor1-last=Liu|inventor1-first=Shang|inventor2-last=Wang|inventor2-first=Tong|inventor3-last=Han|inventor3-first=Hongwei|inventor4=Jiang Lei; Chen Da;Feng Yaohui; Han Bao}} It is manufactured by the AALPT based on the experience of previous kerolox engines, and using 3D printing technology and is capable of multiple restarts. It is used in Tianlong-2 launch vehicle developed by Space Pioneer.{{cite web|url=https://www.rocketlaunchschedule.com/space-pioneer-tianlong-2-demo-flight/|title=Space Pioneer Tianlong-2 Demo Flight|website=Rocket Launch Schedule}}
History
The engine was revealed in 2021 without a target launch vehicle. In its presentation video, it was shown in a five engine configuration on a 3.35m diameter first stage and as a single engine on the second stage. As of October 2021, it was in an advanced state of development, with six fully assembled prototypes some of which had achieved over 200 seconds of test firing. It was stated that it could be ready by 2022. A reusable version, YF-102R could be ready by 2026 according to the manufacturer.
In 2023, Space Pioneer, a Chinese private aerospace startup used YF-102 engines to power its Tianlong-2 Rocket. Tianlong-2 is a medium-sized, 3-stage rocket powered by RP-1 and liquid oxygen, with a payload capability of 2 tonnes to LEO and 1.5 tonnes to SSO.{{cite web|url=https://www.business2community.com/tech-news/chinas-tianbing-launch-success-of-liquid-propellant-space-rocket-opens-way-to-reusable-vehicles-02666435|title=China's Tianbing Launch Success of Liquid Propellant Space Rocket Opens Way to Reusable Vehicles|website=Business2Community}} Each of the stages of the Tianlong-2 rocket is equipped with a YF-102 gas generator engine, which develops 85 tons of thrust.{{cite web|url=https://universemagazine.com/en/chinese-startup-launches-liquid-fueled-rocket-for-the-first-time/|title=Chinese startup launches liquid-fueled rocket for the first time|website=Universe Magazine|date=3 April 2023 }} The three first-stage YF-102 were arranged in a triangular arrangement.{{cite web|url=https://spacenews.com/chinas-space-pioneer-reaches-orbit-with-liquid-propellent-rocket/|title=China's Space Pioneer Reaches Orbit with Liquid Propellent Rocket|website=Space News}}
See also
References
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{{Rocket engines}}
{{DEFAULTSORT:YF-102}}
Category:Rocket engines of China
Category:Rocket engines using kerosene propellant
Category:Rocket engines using the expander cycle
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