Crew Dragon Demo-1
First orbital test of SpaceX's Dragon 2 spacecraft.
Crew Dragon Demo-1, also known as SpaceX Demo-1 or Demonstration Mission-1, marked the first time a Dragon 2 spacecraft flew in orbit. It lifted off on 2 March 2019 at 07:49:03 UTC aboard a Falcon 9 Block 5 rocket, part of NASA’s Commercial Crew Program. After a little over 24 hours, it reached the International Space Station on 3 March 2019, where it tested automated approach and docking procedures. The capsule undocked on 8 March 2019 at 07:32 UTC, separated from its trunk, performed a de-orbit burn, re-entered the atmosphere, and splashed down in the Atlantic Ocean about 320 km off Florida’s west coast (in the Gulf of Mexico) at 13:45:08 UTC. Recovery ship GO Searcher retrieved the capsule, which was then examined on land to analyze data from its onboard sensors.
The mission carried an Anthropomorphic Test Device named Ripley—after the character from the *Alien* films—wearing a SpaceX flight suit. The capsule was ballasted to match the weight of a crewed flight and held about 180 kg of supplies and equipment, including a plush toy used as a zero-g indicator. That toy stayed aboard the ISS after undocking, while Ripley returned safely to Earth.
Life support systems were monitored throughout the flight to gather data needed for future human missions. The capsule was originally intended to be reused in an in-flight abort test, but it was destroyed on 20 April 2019 during a static fire test of its SuperDraco thrusters at Landing Zone 1.
The mission had faced numerous delays. Initial hopes for Commercial Crew Development 2 flights as early as 2015 gave way to a target of no earlier than December 2016, then multiple postponements through 2017. NASA published the first exact date—17 January 2019—in November 2018, but that slipped to February 2019. A static fire test occurred on 24 January 2019, setting a launch date of 23 February 2019, but by late January a SpaceX FCC filing pushed it to no earlier than 2 March 2019. The Flight Readiness Review passed on 22 February 2019, and the Launch Readiness Review on 27 February 2019. The Falcon 9 rolled out to Launch Complex 39A on 28 February 2019 at around 15:00 UTC and went vertical hours later.
- mission_type
- Orbital test flight
- launch_date
- 2 March 2019 at 07:49:03 UTC
- docking_date
- 3 March 2019 at 10:51 UTC
- splashdown_date
- 8 March 2019 at 13:45:08 UTC
- spacecraft
- Dragon 2
- launch_vehicle
- Falcon 9 Block 5
- operator
- SpaceX under NASA's Commercial Crew Program
Lore & Background
The mission launched on 2 March 2019 at 07:49:03 UTC from LC-39A after rolling out on 28 February 2019. It docked with the International Space Station on 3 March 2019 at 10:51 UTC, testing approach and automated docking procedures. The spacecraft carried an Anthropomorphic Test Device named Ripley, wearing a SpaceX flight suit, and about 180 kg of supplies including a plush zero-g indicator. The capsule undocked on 8 March 2019 at 07:32 UTC, performed de-orbit burn, and splashed down in the Atlantic Ocean about 320 km off Florida's west coast (in the Gulf of Mexico) at 13:45:08 UTC. Recovery was conducted by SpaceX's ship GO Searcher. The capsule was later destroyed on 20 April 2019 during a static fire test of its SuperDraco thrusters at Landing Zone 1.
Reader's Guide
Crew Dragon Demo-1 was the first orbital test of the Dragon 2 spacecraft under NASA's Commercial Crew Program. It validated automated docking, life support systems, re-entry, and recovery procedures, providing essential data for subsequent crewed flights. The mission faced multiple delays from initial hopes in 2015 through several postponements until its launch on 2 March 2019. Its success paved the way for the first crewed Dragon flight, though the capsule itself was lost in a ground test accident on 20 April 2019. The mission demonstrated the viability of commercial crew transportation to the International Space Station.
Did You Know?
- The capsule carried an Anthropomorphic Test Device named Ripley, after Sigourney Weaver's character in the Alien movies.
- The mission launched on 2 March 2019 at 07:49:03 UTC and docked with the ISS on 3 March 2019 at 10:51 UTC.
- The capsule was destroyed on 20 April 2019 during a static fire test of its SuperDraco thrusters at Landing Zone 1.
- A plush toy served as a 'super high tech zero-g indicator' and was left on the ISS after undocking.
Frequently Asked Questions
What is Crew Dragon Demo-1?
It is the uncrewed maiden orbital flight of SpaceX's Dragon 2 capsule, flown under NASA's Commercial Crew Program. The test validated that the vehicle could reach orbit, dock with the ISS, and safely return to Earth.
When did Demo-1 launch and where did it splash down?
The capsule lifted off at 07:49 UTC on 2 March 2019 and touched down in the Atlantic Ocean on 8 March 2019, roughly 320 km off Florida's coast. The entire mission lasted about six days.
What did the spacecraft actually do at the ISS?
After reaching orbit in just over 24 hours, Demo-1 exercised its autonomous approach and docking procedures at the station on 3 March 2019. On 8 March it undocked, shed its trunk section, fired a de-orbit burn, and re-entered the atmosphere before splashing down.
Why is Crew Dragon Demo-1 a milestone in spaceflight?
It was the very first time a Dragon 2 vehicle ever left the ground and completed a full orbital cycle. That single test opened the door for SpaceX to fly astronauts to the ISS under NASA's Commercial Crew Program.
What rocket and capsule made up the Demo-1 stack?
A Falcon 9 Block 5 booster carried the Dragon 2 capsule to orbit. The pairing demonstrated the complete launch-and-return system SpaceX would later use for crewed missions.
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