Rocket Selection

Vehicles chosen for distinct TWR profiles

Falcon 9

Heavy

Starship

Artemis SLS

Saturn V

New Glenn

Neutron

Delta IV H

Long March 5

Mission Name

Marking on vehicle body

Payload

Affects mass & liftoff TWR

Starlink

JWST-class

Mars Rover

Crew

Target Planet

Shown after orbital insertion

Earth

Moon

Mars

Jupiter

Saturn

Parameters · TWR Focus

TWR = F / (m · g₀) · rises as fuel burns

Dry Mass (kg)

Fuel Mass (kg)

Isp (s) — 282

Thrust (kN) — 7600

Target Orbit Energy (m/s)

LEO ≈ 9400 · GTO ≈ 11800 · Escape ≈ 12500

Launch Config

Countdown (s)

Time of Day

Day

Evening

Night

Dawn

Country Flag

Vehicle Colors

Core body & side boosters

Rocket

Boosters

Mission Control

mail Feedback home Home

rocket_launch TWR PREMIUM ACCESS

NAVIGATION · TWR LAB

ALT 000 m

VEL 000 m/s

MACH 0.0

TWR 1.20

STANDBY

MAX-Q

FUEL 100%

STAGE 1

HEIGHT ABOVE SEA LEVEL

0 m

Pad · 0 km

Mission Report

Max Altitude—

Max Velocity—

Flight Time—

Peak TWR—

Achieved Δv—

Outcome—

rocket_launch

Horizon AI

TWR Specialist

Hi! I’m Horizon AI — your TWR specialist.

I can load rockets, explain why TWR must be > 1.05, show how it rises as fuel burns, set masses/Isp/thrust, change planets & lighting, and walk you through Max-Q and stage separation.

Ask me anything about thrust-to-weight.

Rocket Selection

Mission Name

Payload

Target Planet

Parameters · TWR Focus

Launch Config

Vehicle Colors

Mission Control

MISSION SUCCESS

Mission Report

Fleet State Locked by Administrator

Fullscreen Mode

Rocket Tools & More

Rocket Selection

Mission Name

Payload

Target Planet

Parameters · TWR Focus

Launch Config

Vehicle Colors

Mission Control

MISSION SUCCESS

Mission Report

Fleet State Locked by Administrator

Fullscreen Mode

Live Telemetry

Rocket Tools & More