Long March 2D

{{Infobox rocket

|name = Long March 2D

|image = CZ-2D rendering.jpg

|caption = Rendering of Long March 2D.

|manufacturer = SAST

|country-origin = China

|cpl = US$30 million{{cite web|url=https://www.gao.gov/assets/690/686613.pdf|title=Surplus Missile Motors: Sale Price Drives Potential Effects on DOD and Commercial Launch Providers |publisher=Government Accountability Office|page=30|date=August 2017|access-date=22 June 2020}} {{PD-notice}}

|status = Active

|sites = LA-2/138 and LA-4/SLS-2, JSLC
LA-9, TSLC
LA-3, XSLC

|height = {{cvt|41.056|m}}{{cite web|url=http://www.astronautix.com/lvs/cz2d.htm|title=CZ-2D|author=Mark Wade|publisher=Encyclopedia Astronautica|access-date=1 May 2008|url-status=dead|archive-url=https://web.archive.org/web/20080510150614/http://www.astronautix.com/lvs/cz2d.htm|archive-date=10 May 2008}}

|diameter = {{cvt|3.35|m}}

|mass = {{cvt|232250|kg}}

|stages = 2

|launches = 99

|success = 98

|partial = 1

|first = 9 August 1992

|last = 14 June 2025

|capacities = {{Infobox Rocket/Payload

|location = LEO

|kilos = {{cvt|3500|kg}}

}}

{{Infobox Rocket/Payload

|location = SSO

|kilos = {{cvt|1300|kg}}{{cite web|url=http://www.cgwic.com/LaunchServices/LaunchVehicle/LM2D.html|title=LM-2D|publisher=China Great Wall Industry Corporation|access-date=11 March 2016|archive-date=21 July 2017|archive-url=https://web.archive.org/web/20170721043418/http://www.cgwic.com/LaunchServices/LaunchVehicle/LM2D.html|url-status=dead}}

}}

|family = Long March

|stagedata = {{Infobox rocket/Stage

|type = stage

|stageno = First

|name =

|length = 27.91 m

|diameter = 3.35 m

|empty =

|gross =

|propmass = {{cvt|182000|kg}}

|engines = 4 YF-21C

|thrust = {{cvt|2961.6|kN}}

|alt-thrust =

|burntime =

|SI = {{cvt|2550|m/s}}

|fuel = N₂O₄ / UDMH

}}

{{Infobox rocket/Stage

|type = stage

|stageno = Second

|name =

|length = 10.9 m

|diameter = 3.35 m

|empty =

|gross =

|propmass = {{cvt|52700|kg}}

|engines = 1 YF-24C
(1 x YF-22C (Main))
(4 x YF-23C (Vernier))

|thrust = {{cvt|742.04|kN}} (Main)
{{cvt|47.1|kN}} (Vernier)

|alt-thrust =

|burntime =

|SI = {{cvt|2942|m/s|isp}} (Main)
{{cvt|2834|m/s|isp}} (Vernier)

|fuel = N₂O₄ / UDMH

}}

{{Infobox rocket/stage

| type = stage

| stageno = Third

| diff = optional

| name = YZ-3

| engines = 1 × YF-50D

| thrust = {{cvt|6.5|kN}}

| SI = {{cvt|315.5|isp}}

| burntime =

| fuel = N₂O₄ / UDMH

}}

The Long March 2D ({{zh|长征二号丁火箭}}), also known as the Chang Zheng 2D, CZ-2D, and LM-2D, is a Chinese two-stage orbital carrier rocket mainly used for launching LEO and SSO satellites. It is manufactured by the Shanghai Academy of Spaceflight Technology (SAST).{{cite web|url=https://docs.google.com/gview?url=https://brycetech.com/reports/report-documents/China_Orbital_Launch_Activity_2020.pdf|title=China's Orbital Launch Activity 2020|work=Bryce Space and Technology|date=27 May 2020|access-date=22 June 2020}}

It is mainly launched from areas LA-2B and LA-4 at the Jiuquan Satellite Launch Center. The Long March 2D made its maiden flight on 9 August 1992. It was initially used to launch FSW-2 and FSW-3 reconnaissance satellites. More recently it has also launched from LA-9 TSLC and LA-3 XSLC.

Unlike all other members of the Long March 2 rocket family, the Long March 2D is a two-stage version of the Long March 4 launch vehicle.{{cite web|title=Long March 2D launch vehicle (LM-2D)|url=http://cn.cgwic.com/LaunchServices/LaunchVehicle/LM2D.html|publisher=China Great Wall Industry Corporation|access-date=3 February 2018|language=zh}}