Falcon 9
A two-stage orbital launch vehicle developed by SpaceX featuring a recoverable and reusable first stage that lands vertically. It is among the highest-flight-rate commercial launch vehicles in operation globally.
Core Facts
Timeline (last 90 days)
A developer shared on Reddit a project using a PPO agent to land a Falcon 9 on an uncrewed ship, then escalated the problem to two cooperating agents completing the task of a Super Heavy booster being caught by the launch tower's mechanical arms.
Falcon 9's reusability experience shows that refurbishment cost and turnaround time determine whether reuse can deliver substantial savings.
Hoverslam landing requires the rocket engine's thrust to exceed gravity (thrust-to-weight ratio greater than 1), so the rocket cannot hover and must reduce its velocity precisely to zero at the instant of touchdown.
A developer used reinforcement learning to reproduce the landing process of a Falcon 9 rocket on a droneship in a purely simulated environment, without using any real flight data.
SpaceX's Falcon 9 landing uses the Hoverslam mode.
V2.0 Mini is currently the primary variant carried by Falcon 9, and has already achieved a significant improvement in throughput over V1.5.
Starship has a payload capacity far exceeding that of the Falcon rocket, allowing it to carry more and larger satellites into orbit in a single launch.
SpaceX's Falcon 9 uses liquid oxygen/kerosene propellant, while Europe's Ariane 5 uses liquid oxygen/liquid hydrogen.
SpaceX's Falcon 9 first stage has accumulated more than 300 successful recoveries.
Stoke Space's core goal is to achieve full reusability of both the first and second stages of its rocket, distinguishing it from SpaceX's Falcon 9, which only recovers the first stage.
1 more timeline events
All Facts (13)
A Falcon 9 costs approximately $60 million, while the propellant cost for a single launch is only about $300,000.
65%UnverifiedSpaceX猎鹰9号的发射成本约为2700美元/公斤
80%UnverifiedStarship is a fully reusable super-heavy launch vehicle developed by SpaceX, with a design target payload capacity to low Earth orbit of over 100 tonnes, approximately 6 times that of the Falcon 9.
60%UnverifiedSpaceX's Falcon 9 has compressed the cost per kilogram to orbit from approximately $20,000 to the $2,000–$3,000 range through first-stage vertical recovery and reuse.
60%UnverifiedFalcon 9's reusability experience shows that refurbishment cost and turnaround time determine whether reuse can deliver substantial savings.
50%UnverifiedSpaceX's Falcon 9 landing uses the Hoverslam mode.
50%UnverifiedA developer used reinforcement learning to reproduce the landing process of a Falcon 9 rocket on a droneship in a purely simulated environment, without using any real flight data.
50%UnverifiedHoverslam landing requires the rocket engine's thrust to exceed gravity (thrust-to-weight ratio greater than 1), so the rocket cannot hover and must reduce its velocity precisely to zero at the instant of touchdown.
50%UnverifiedStarship has a payload capacity far exceeding that of the Falcon rocket, allowing it to carry more and larger satellites into orbit in a single launch.
50%UnverifiedV2.0 Mini is currently the primary variant carried by Falcon 9, and has already achieved a significant improvement in throughput over V1.5.
50%UnverifiedSpaceX's Falcon 9 uses liquid oxygen/kerosene propellant, while Europe's Ariane 5 uses liquid oxygen/liquid hydrogen.
50%UnverifiedStoke Space's core goal is to achieve full reusability of both the first and second stages of its rocket, distinguishing it from SpaceX's Falcon 9, which only recovers the first stage.
50%UnverifiedA developer shared on Reddit a project using a PPO agent to land a Falcon 9 on an uncrewed ship, then escalated the problem to two cooperating agents completing the task of a Super Heavy booster being caught by the launch tower's mechanical arms.
50%