# Flight Trajectory Simulation - FTS ## Basics The Flight Trajectory Simulation allows users to request a flight simulation along a given 3D route to retrieve flight time, flight progress over time along the flight path, and energy information.
A graphic showing an example of an FTS (Flight Trajectory Simulation)
## Input required ### Route Information The 3D route can be defined by 1. ~~Route asset as defined in NOVA~~ (foreseen as FTS1) 2. LAT/LON/ALT and sent with the request (FTS2) ### Aircraft Performance Information **Speeds** * Ground Speed or Air Speed Command & max speed * Rate of Climb (RoC) and Rate of Descent (RoD) * Endurance in seconds / minutes {% hint style="info" %} Ground Speed (GS) commands are often used by multicopter drones and is the speed relative to ground. When GS is commanded the autopilot (and the simulation) of the aircraft tries to reach the target ground speed whatever the wind conditions are. Equivalent Air Speed (EAS) commands the target speed of the aircraft relative to wind. EAS commands are often used by fixed-wing and hybrid drone systems on en-route flight where their speed is measured by a pitot tube. {% endhint %} ## Additional Information The trajectory simulation results can take up to **30 seconds**, depending on its path, length, and altitude. The available timeframe is UTC+00 today until UTC+168h. --- # Agent Instructions: Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter: ``` GET https://docs.unisphere.io/unisphere-apis/flight-trajectory-simulation-fts-1.md?ask= ``` The question should be specific, self-contained, and written in natural language. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.