Ameer Randolph
The Falcon 9 rocket is a partially reusable, two-stage-to-orbit, medium-lift launch vehicle designed and manufactured in the United States by SpaceX. The rocket has had a number of notable successes and failures, including a successful launch in June 2010 and an explosion in September 2016. With 509 successful launches, two in-flight failures, one partial failure, and one pre-flight destruction, the Falcon 9 has been noted for its reliability and high launch cadence. But how much fuel does it take to launch this rocket?
| Characteristics | Values |
|---|---|
| First launch | June 4, 2010 |
| First commercial resupply mission to the ISS | October 8, 2012 |
| Number of successful launches | 509 |
| Number of in-flight failures | 2 |
| Number of partial failures | 1 |
| Number of pre-flight failures | 1 |
| Total number of engines | 9 |
| Engine burn time | 180 seconds |
| Sea-level thrust at liftoff | 5,885 kN (1,323,000 lbf) |
| Thrust outside the atmosphere | 6,672 kN (1,500,000 lbf) |
| Payload capacity | 13,150 kg (28,990 lb) |
| Starting propellant | 409.5 tons |
| Average fuel remaining after drone ship landing | 27.1 tons |
| Average fuel remaining after land landing | 56.3 tons |
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What You'll Learn
The first Falcon 9 launch was in 2010
The Falcon 9 rocket is a partially reusable, two-stage-to-orbit, medium-lift launch vehicle designed and manufactured by SpaceX. The rocket has two stages: the first stage (booster) carries the second stage and payload to a predetermined speed and altitude, and the second stage accelerates the payload to its target orbit.
The first Falcon 9 launch took place on June 4, 2010. The rocket's first commercial resupply mission to the International Space Station (ISS) launched on October 8, 2012. In 2020, the Falcon 9 became the first commercial rocket to launch humans into orbit.
The Falcon 9 has undergone several iterations since its first launch, with the retired versions Falcon 9 v1.0 launched five times from June 2010 to March 2013, Falcon 9 v1.1 launched 15 times from September 2013 to January 2016, and Falcon 9 v1.2 "Full Thrust" launched 36 times from December 2015 to June 2018. The active "Full Thrust" variant, Falcon 9 Block 5, has launched numerous times since May 2018, with over 450 successful flights as of 2025.
The Falcon 9 is known for its reliability and high launch cadence, with over 500 successful launches, a few in-flight failures, and a pre-flight destruction. It is the most-launched American orbital rocket in history. The rocket has a high success rate for landing boosters, with over 450 successful landings out of 460 attempts as of 2022.
The Falcon 9 uses SpaceX Merlin engines, which are powered by cryogenic liquid oxygen and rocket-grade kerosene (RP-1) as propellants. The amount of fuel used in a Falcon 9 launch depends on various factors, such as payload weight and mission requirements, but the rocket has a fuel capacity that enables it to carry out its missions successfully.
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It has since had 509 successful launches
The Falcon 9 rocket, designed and manufactured by SpaceX, has had 509 successful launches, making it the most-launched American orbital rocket in history. Its first launch was on June 4, 2010, and it achieved Earth orbit. The rocket is noted for its reliability and high launch cadence.
The Falcon 9 has had several notable missions and achievements since its first launch. In 2011, SpaceX began a formal development program for a reusable Falcon 9, with the new version, V1.1, offering 60% more thrust and payload capability than its predecessor. The first commercial resupply mission to the International Space Station (ISS) was launched on October 8, 2012, and in 2020, Falcon 9 became the first commercial rocket to launch humans into orbit.
Despite its successes, Falcon 9 has also experienced some failures and challenges. In 2014, an unmanned SpaceX Falcon 9R rocket broke up in mid-air during a test flight, and in 2016, a Falcon 9 rocket exploded on the launch pad at Cape Canaveral, destroying a $200 million satellite. Additionally, there have been challenges with fuel leaks and anomalies during reentry, with some missions resulting in partial or in-flight failures.
The Falcon 9 rocket uses liquid oxygen and RP-1 fuel, and the amount of fuel used can vary depending on the mission and landing type. For example, one source estimates that a land landing will leave approximately 56.3 tons of fuel, while a drone ship landing will leave around 27.1 tons. Another source mentions that a static test firing of the Falcon 9 rocket consumed over half a million pounds of propellant.
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The rocket has two stages
The Falcon 9 rocket is a partially reusable, two-stage-to-orbit, medium-lift launch vehicle manufactured by SpaceX. The rocket's first launch took place on June 4, 2010, and its first commercial resupply mission to the International Space Station (ISS) was on October 8, 2012.
The second stage then takes over to accelerate the payload to its target orbit. The second stage is responsible for the final insertion of the payload into orbit. During this stage, the rocket engines burn for a nominal 180 seconds, with the stage's thrust increasing as the rocket climbs out of the atmosphere.
The Falcon 9 rocket has a starting propellant of 409.5 tons. The amount of fuel remaining after stage separation depends on the landing type. Land landings leave an average of 56.3 tons of fuel, while drone ship landings leave around 27.1 tons. SpaceX has successfully landed booster rockets on ocean platforms, demonstrating their ability to recover and reuse the first stage.
The two-stage design of the Falcon 9 rocket allows for flexibility and reusability. By having a separate booster stage, SpaceX can recover and reuse the first stage, reducing costs and improving launch cadence. The second stage ensures the precise insertion of the payload into its intended orbit.
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The first stage consumes a lot of fuel
The Falcon 9 rocket is a two-stage-to-orbit vehicle with a first (booster) stage that carries the second stage and payload to a predetermined speed and altitude. The first stage consumes a lot of fuel during the launch process.
The Falcon 9 rocket's first stage consumes a significant amount of fuel to propel the rocket and its payload to the desired speed and altitude. The first stage is responsible for the initial boost and climb out of the atmosphere, requiring a substantial amount of fuel to generate the necessary thrust. During a typical climb to orbit, the rocket's nine engines burn for approximately 180 seconds, with the first stage offering a sea-level thrust of 5,885 kN (1,323,000 lbf). As the booster climbs out of the atmosphere, the stage's thrust can increase to 6,672 kN (1,500,000 lbf).
The amount of fuel consumed during the first stage depends on various factors, including the payload weight and the desired orbit. In some cases, the first stage may require extra fuel to ensure the payload reaches the correct orbit. The heavier the payload, the more fuel is needed to achieve the required speed and altitude. Additionally, the specific mission profile and flight path can also influence the amount of fuel consumed during the first stage.
The first stage of the Falcon 9 rocket is designed to be reusable, and SpaceX has been working on optimizing fuel usage during the first stage to improve the reusability of the booster. However, the process of landing the booster, either on land or at sea, requires additional fuel. This fuel is necessary for the final landing burn and can impact the amount of fuel available for the payload.
The exact amount of fuel consumed during the first stage of a Falcon 9 launch can vary, but estimates suggest that the first stage engines burn through a significant portion of the rocket's total propellant. The first stage engines consume fuel rapidly during the initial climb, and the booster may retain approximately 30% of its fuel after stage separation when attempting a landing.
Overall, the first stage of the Falcon 9 rocket consumes a substantial amount of fuel to achieve the necessary speed and altitude for the payload. The specific fuel usage depends on various factors, and SpaceX continues to refine the design and fuel efficiency of the Falcon 9 to optimize its performance and reusability.
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The second stage is susceptible to malfunction
The Falcon 9 rocket is a partially reusable, two-stage-to-orbit, medium-lift launch vehicle. The first (booster) stage carries the second stage and payload to a predetermined speed and altitude, after which the second stage accelerates the payload to its target orbit.
The second stage of the Falcon 9 rocket is susceptible to malfunction. In July 2024, an upper-stage engine malfunctioned during the launch of the Starlink Group 9-3 mission, resulting in the total loss of the payload. This was caused by a liquid oxygen leak in the upper stage's engine. The Federal Aviation Administration (FAA) grounded the rocket following this incident.
In August 2024, another malfunction occurred during a deorbit burn after the successful launch of the Crew-9 mission. The upper stage engine failed to execute its planned deorbit burn, causing the rocket to reenter outside its designed zone. This anomaly led to the grounding of the Falcon fleet and an investigation by NASA.
In February 2025, a similar issue occurred with the Starlink Group 11-4 mission, where the upper stage malfunctioned and prevented the execution of the planned deorbit burn. This resulted in the rocket remaining in orbit for two weeks before an uncontrolled reentry near Poznań, Poland. Again, this malfunction was attributed to a liquid oxygen leak in the upper stage's engine.
These incidents highlight the susceptibility of the Falcon 9 rocket's second stage to malfunction, particularly regarding the upper stage engine and deorbit burns. The FAA and SpaceX have worked to address these issues and improve the reliability of the rocket.
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Frequently asked questions
The Falcon 9 rocket's starting propellant is 409.5 tons.
If the rocket attempts a land or sea landing, approximately 30% of its total tank of fuel is left after stage separation.
Theoretically, if 50% of the fuel is used for landing, the rocket has 25% of its payload remaining.
The Falcon 9 rocket uses approximately half a million pounds of propellant for launch.
