Launch
Rocket Launch Simulator: Feel the Countdown, Liftoff and Orbit
Ten, nine, eight… then a roar, a slow rise past the tower and a climb that turns the sky black. The LIFTONAUT rocket launch simulator puts you in a passenger seat for the whole sequence, from the GO/NO-GO poll to engine cutoff in orbit, with the first two and a half minutes running in real time.
A launch is the most intense part of any spaceflight, and the best documented. LIFTONAUT simulates it physically: thrust, drag and the air of the U.S. Standard Atmosphere 1976, so speed, altitude, g-load and the outside temperature on your screen follow the same physics as a real ascent.
Here is what happens, step by step, and how each moment looks from the cabin and from outside.
What a launch looks like from the passenger seat
From inside, you see the tower slide past the windows, then the coastline tilting as the rocket pitches toward the horizon, then a sky that fades from blue to black. The instruments show the numbers climbing: speed, altitude, Mach, g-load and dynamic pressure, the push of the air on the rocket.
We launch toward the east, over the ocean. At a latitude of 28.6° north, Earth's rotation already gives the rocket about 400 m/s for free, which is why real launch sites like to fire east.
The countdown, call by call
- GO/NO-GO poll. The flight director asks each console in turn: propulsion, guidance, weather, recovery, crew and cabin. Everyone answers GO.
- Clearance. Mission Control tells the crew they are GO for launch, and the commander confirms.
- Final count. From ten to one, with the crew access arm already retracted.
- Liftoff. The engines ignite, the rocket rises and clears the tower, and control passes to Liftonaut Control.
You hear every call on the radio loop, voiced in English or Romanian, with subtitles in five languages.
Ignition, Max Q and stage separation
Within the first minute the rocket goes supersonic, and around 72 seconds after liftoff it passes Max-Q. At 20 km the outside air is −56.5 °C and almost 14 times thinner than at the ground.
Why the rocket shakes most around Max Q
Max-Q is the moment of maximum dynamic pressure: the rocket is already fast while the air is still dense, so the aerodynamic load peaks. Real rockets often throttle down just before it, and LIFTONAUT does the same, then throttles back up once the air thins.
How the booster separates
At two and a half minutes the first-stage engines cut off (MECO), the booster separates, and a few seconds later the ship's own engines ignite. The booster then turns around and flies itself back toward the coast to land; a dedicated camera follows it down.
Why the flame widens as the air thins
An engine's exhaust is pushed into shape by the air around it. As the rocket climbs and the outside pressure drops, the plume spreads wider and wider, becomes translucent and almost disappears in the vacuum.
From liftoff to orbit: under ten minutes in a real launch
A real orbital launch takes less than ten minutes. The Space Shuttle's main engines, for instance, burned for 8.5 minutes and took the orbiter to over 27,000 km/h, while throttling to keep the acceleration at 3 g.
- the Kármán line, the boundary usually used for space
- 100 km
- the speed needed to stay in low Earth orbit
- about 28,000 km/h
- peak acceleration of the LIFTONAUT climb
- just over 3 g
In LIFTONAUT, the climb through staging runs in real time, and the second-stage burn is shortened, so you reach orbit a few minutes after liftoff. Passing 100 km does not need any special speed; staying up does: orbit means moving sideways fast enough to keep falling around Earth instead of back to it.
Watch it from outside: chase and ground cameras
Switch from the cabin to the chase camera to see the whole rocket against the sky, or to the ground camera, a long telephoto lens that tracks the flame from the coast during the low part of the climb. After separation, the booster camera follows the first stage home. On AUTO, the director picks the most spectacular view at each moment, like a live launch broadcast.
To ride the launch for free, take the free trial flight. The Earth Orbit tour adds a full orbit with sunrise, sunset and a pass by the space station, for €0.99.
Launch questions
How does a rocket launch work, step by step?
A GO/NO-GO poll, the final countdown, ignition and liftoff, a turn toward the horizon, Max-Q around the first minute, first-stage engine cutoff and separation, second-stage ignition, and engine cutoff once the ship reaches orbital speed.
What does a rocket launch sound like?
Outside, a deep, crackling roar strong enough that launch pads flood themselves with water to protect the rocket from the sound. Inside, a rumble felt through the seat and the voices on the radio. Once the engines stop in space, there is silence.
How fast is a rocket when it reaches orbit?
About 7.7 km/s, roughly 28,000 km/h, for an orbit around 400 km up. To leave Earth entirely it would need about 11.2 km/s, the escape velocity.
How long does it take a rocket to reach orbit?
Usually less than ten minutes. The Space Shuttle's main engines burned for 8.5 minutes. In LIFTONAUT the climb through staging is real time and the second-stage burn is shortened.
Can I experience a rocket launch from home?
Yes, in a simulator. LIFTONAUT runs in the browser: the free trial flight covers liftoff, staging, orbit and the trip to the Moon, and the Earth Orbit tour costs €0.99.
Sources
The numbers on this page come from these official sources.
- NOAA · NASA · USAF · U.S. Standard Atmosphere, 1976
- NASA Glenn · Dynamic pressure
- NASA · The Space Shuttle (engine burn, speed, 3 g)
- NASA · Earth's Atmosphere: A Multi-layered Cake (the Kármán line)
- NASA NSSDCA · Earth Fact Sheet (rotation, escape velocity)
- NASA · Kennedy teams complete water flow tests for Artemis II (2024)