Qontra Aerospace Engineering Platform

From concept to orbit.
One platform.

Design a mission, run it against real orbital mechanics, inspect the hardware, and talk it through with your team. QOSE keeps all of that under one account.

Find the problems in simulation, months before they'd show up on the launch pad.

Simulate

Built on real orbital mechanics

Every simulation runs on the SGP4/SDP4 propagation standard used across the satellite industry, so the numbers you get out mean something.

SG4

SGP4 / SDP4 propagation

Track real or synthetic satellites with the industry-standard propagation models, driven by TLE data or your own constellation design.

GS

Ground station passes

Predict access windows and Doppler shift for any ground station against any satellite in your simulation.

Pc

Collision probability

Estimate conjunction risk between objects using established probability-of-collision bounds.

OE

Classical orbital elements

Inspect and adjust the six elements that define every orbit, with live feedback as values change.

GT

2D ground track

Watch a satellite's path unfold across a world map in real time, orbit after orbit.

Lv

Live data feeds

Pull in current space-weather and debris-tracking data to keep simulations grounded in the present sky.

Build

Work that goes beyond orbit

A code workspace and a 3D inspection tool live in the same account, for the engineering work that happens before and alongside a simulation.

LB

QOSE Lab

A real code workspace for Python and JavaScript, with syntax highlighting, built-in viewers, and cloud sync. Nothing to install.

CI

CAD Inspector

Load a 3D model, measure it, section it, explode it, compare it against another version, then export a report for the hardware side of a mission.

Collaborate

Bring your team in

Talk through a mission and show people exactly what you're seeing, without leaving QOSE.

BG

QOSE Bridge

Global chat, private messages, and invite-only groups. Available to anyone signed in.

RL

QOSE Relay

Share a live view of a running mission. You approve or decline every request, so you always control who's watching.

Getting in

Start free. No card required.

Sign up and you're on the free tier immediately. When you need the full toolset, an Individual, Team, Organization, Academic, or Partner license opens it up.

Latest

Recent announcements

This portal is now live

Documentation, release notes, and support now live at their own address, separate from the simulator itself.

QOSE Lab and CAD Inspector are live

Two new apps under BUILD: a code workspace and a 3D model inspector, joining Reborn, Brutal Mode, Bridge, and Relay inside QOSE.

See the full changelog

Track every release, feature addition, and maintenance notice on the Updates page.