01Start with the parts
Tanks, engines, a spacecraft, and its covers are laid out before you. Scroll to connect them one by one, then send the finished rocket into space.
- Item
- Parts
- Scale
- 12 part groups
- Status
- Ready to assemble
02Assemble propulsion
Five engines lock onto the thrust structure. This is where their force will pass into the body of the rocket.
- Item
- Propulsion
- Scale
- 5 engines
- Status
- Mounted
03Connect the feed lines
Connect the propellant lines above the engines. Four valves control the fuel and oxygen that will flow down from the tanks.
- Item
- Feed system
- Scale
- 4 valves
- Status
- Connected
04Install the tanks
The tanks move into the body and meet the feed lines. One carries fuel, the other liquid oxygen for the journey beyond the atmosphere.
- Item
- Propellant
- Scale
- 2 tanks
- Status
- Installed
05Mount the payload
Secure the flight computer, then lower the spacecraft onto its support. The cargo now has its place at the top of the rocket.
- Item
- Spacecraft
- Scale
- Upper section
- Status
- Secured
06Fit the covers
The two fairing halves close around the spacecraft and the nose cone seats above them, completing its protection from heat and rushing air.
- Item
- Fairing
- Scale
- 2 halves
- Status
- Closed
07Complete the airframe
The aft shell and boosters settle into place as the body closes around the tanks. Twelve groups now form one complete vehicle.
- Item
- Airframe
- Scale
- 8.8 m
- Status
- Assembled
08Check the assembly
The five mounted engines tilt to check steering. With every part connected, the rocket completes its checks before launch.
- Item
- Propulsion
- Scale
- 5 engines
- Status
- Steering check
09Ready for launch
Tanks, feed lines, engines, and spacecraft are secured in place. The completed rocket finishes its final checks and waits for ignition.
- Item
- Rocket
- Scale
- 12 part groups
- Status
- Ready to launch
10At last, liftoff
The engines fire and the rocket lifts off. Let's follow it a little farther into space.
- Item
- Rocket
- Scale
- 5 engines
- Status
- Climbing