Galactic Energy Welkin

{{infobox rocket engine

|name = Welkin

|image =

|image_size =

|caption =

|country_of_origin = China

|date =

|first_date =

|last_date =

|designer =

|manufacturer = Galactic Energy

|purpose = {{plainlist|

• Booster stage engines
• Upper stage engine

}}

|associated =

|predecessor =

|successor =

|status = Under development

|type = liquid

|oxidiser = LOX

|fuel = RP-1

|mixture_ratio =

|cycle = Gas-generator cycle

|pumps =

|description =

|combustion_chamber=

|nozzle_ratio =

|thrust =

|thrust_at_altitude=

|thrust(Vac) = {{convert|500|kN|lbf|lk=on}}

|thrust(SL) = {{convert|400|kN|lbf|lk=on}}

|thrust_to_weight= >120

|chamber_pressure= {{convert|8.0|MPa|psi|abbr=on}}

|specific_impulse=

|specific_impulse_vacuum=

|specific_impulse_sea_level=

|total_impulse =

|burn_time =

|gimbal =

|capacity =

|dimensions =

|length =

|diameter =

|dry_weight =

|used_in = Pallas-1

|notes = {{cite web |title=WELKIN REUSABLE LOX / KEROSENE ENGINE |url=http://www.galactic-energy.cn/index.php/En/List/cid/18 |website=www.galactic-energy.cn |publisher=Galactic Energy |access-date=9 August 2022}}

}}

Welkin ({{zh|s=苍穹|p=Cāngqióng}}) is a gas-generator cycle rocket engine burning RP-1 and liquid oxygen under development by Galactic Energy. The engine features a pintle type injector, a double suction coaxial split turbine pump, and a gas generator using vortex principle.{{cite web |title=Pallas-1 |url=http://www.b14643.de/Spacerockets_4/Galactic-Energy_Pallas/Description/Frame.htm |website=www.b14643.de}} The engine was built with reusability in mind and can be deep throttled to 20% and re-used up to 50 times.{{cite web |title=Will This Chinese Company be the next SpaceX? |url=https://westeastspace.com/2019/07/19/will-this-chinese-company-be-the-next-spacex/ |website=West East Space |access-date=9 August 2022 |date=19 July 2019}}

Galactic Energy's Pallas-1 reusable launcher will be powered by Welkin engines. Seven Welkin engines producing 280 tonnes of thrust will be powering the first stage, while the second stage will be powered by a single vacuum-optimized engine.{{cite web |last1=Jones |first1=Andrew |title=Chinese private firm Galactic Energy puts five satellites in orbit with second launch |url=https://spacenews.com/chinese-private-firm-galactic-energy-puts-five-satellites-in-orbit-with-second-launch/ |website=SpaceNews |access-date=9 August 2022 |date=7 December 2021}} The engine successfully completed its first full-power test in March 2022.{{cite web |title=Private Chinese Aerospace Firm Galactic Energy Completes Rocket Engine Test |url=https://pandaily.com/private-chinese-aerospace-firm-galactic-energy-completes-rocket-engine-test/ |website=Pandaily |date=1 March 2022}}