TQ-11

{{short description|Engine for space rocket}}

{{infobox rocket engine

|name = TQ-11

|image =

|image_size =

|caption =

|country_of_origin = China

|date =

|first_date =

|last_date =

|designer =

|manufacturer = LandSpace

|purpose =

|associated =

|predecessor =

|successor =

|status = Active

|type = liquid

|oxidizer = LOX

|fuel = liquid methane

|mixture_ratio = 2.92

|cycle = Gas-generator cycle

|pumps =

|description =

|combustion_chamber=

|nozzle_ratio = 25.5

|thrust =

|thrust_at_altitude=

|thrust(Vac) = {{convert|80|kN|lbf|lk=on}}

|thrust(SL) =

|thrust_to_weight=

|chamber_pressure= {{convert|10.1|MPa|psi|abbr=on}}

|specific_impulse=

|specific_impulse_vacuum= 337s

|specific_impulse_sea_level=

|total_impulse =

|burn_time =

|gimbal =

|capacity =

|dimensions = 1.1m

|length =

|diameter = 0.28m

|dry_weight =

|used_in = ZQ-2

|notes = {{cite web |title=TQ-11 Engine |url=http://www.landspace.com/engine/show.php?id=128 |website=LandSpace |access-date=4 March 2021}}

}}

The TQ-11 ({{zh|s=天鹊-11|p=Tiānquè-11}}, lit. Sky Lark 11) is a gas-generator cycle rocket engine burning liquid methane and liquid oxygen developed by LandSpace. It is used as the second stage vernier engine for LandSpace's ZQ-2 rocket.{{cite web |title=System-level Test Run for "TQ-11"LRE Successfully Conducted - Landspace |url=http://www.landspace.com/news/shownews.php?id=178&lang=gb |website=LandSpace |access-date=22 March 2021}}{{cite web |title=Will LandSpace be China's SpaceX? |url=https://www.thespacereview.com/article/3787/1 |website=The Space Review |access-date=23 March 2021}}{{cite web |last1=Jones |first1=Andrew |title=Space Pioneer raises $14 million to develop green liquid rocket engines |url=https://spacenews.com/space-pioneer-raises-14-million-to-develop-green-liquid-rocket-engines/ |website=SpaceNews |date=14 April 2020}} The engine produces {{convert|80|kN|lbf|lk=on}} of thrust in a vacuum.