Falcon Heavy explained: three boosters, 27 engines, two synchronized landings
If a Falcon 9 is impressive, Falcon Heavy is the showpiece: take three Falcon 9 first stages, bolt them together, light all 27 engines at once, and then — the part that broke the internet — land two of the boosters back on the ground at the same time. Here's how it works, and a free game, LANDING BURN, to fly the booster recovery yourself.
Three rockets in a trench coat
Falcon Heavy is essentially a center core with two side boosters attached — each one a modified Falcon 9 first stage. With nine Merlin engines per core, that's 27 engines firing at liftoff, producing around five million pounds of thrust. It can put roughly 64 tonnes into low Earth orbit (about 27 tonnes to the higher geostationary transfer orbit), which has made it the most powerful operational rocket in the world by payload — until Starship comes fully online.
The synchronized landing
On its 2018 debut, Falcon Heavy lobbed a Tesla Roadster toward Mars-distance orbit — but the image everyone remembers is the two side boosters returning together and touching down in near-perfect unison at Cape Canaveral. The center core burns longer and faster, so it lands downrange on a droneship (or is expended on the most demanding missions). Same landing-burn physics as a Falcon 9 — just three at once.
When do they use it?
Falcon Heavy isn't the everyday rocket — Falcon 9 handles most launches. Heavy is reserved for the biggest or most energetic payloads: large national-security satellites, heavy interplanetary probes, and missions that need to throw a lot of mass a long way. For the lighter stuff, the single-core Falcon 9 is cheaper and more than enough. (See how the family compares.)
Fly the recovery
Every Falcon Heavy booster comes home the same way a Falcon 9 does — and that's exactly what you fly in LANDING BURN: flip, boostback, grid-fin glide and a nervy final landing burn onto the droneship. Master one booster and you've mastered the move all three of Heavy's cores perform. Free, in your browser.
FAQ
- How many engines does Falcon Heavy have?
- 27 Merlin engines on the three first-stage cores at liftoff, plus one on the upper stage.
- Is Falcon Heavy the most powerful rocket ever?
- It's been the most powerful operational rocket by payload to orbit, but Starship/Super Heavy is far bigger once it's fully flying.
- Are Falcon Heavy boosters reusable?
- Yes — the side boosters routinely land and refly, just like Falcon 9. More in how reusable rockets work.
- Can I try landing one?
- Yes — LANDING BURN is free, no download, on desktop and mobile.