# Parametric schedulability analysis of a launcher flight control system under reactivity constraints

## TL;DR

This paper introduces a parametric schedulability analysis method for space launcher flight control systems, using formal models and synthesis tools to improve scheduling reliability and efficiency.

## Contribution

It formalizes launcher flight control scheduling with parametric stopwatch automata and demonstrates the effectiveness of the IMITATOR tool for parameter synthesis.

## Key findings

- Successful formalization of the scheduling problem
- Effective parameter synthesis with IMITATOR
- Comparison shows advantages over traditional tools

## Abstract

The next generation of space systems will have to achieve more and more complex missions. In order to master the development cost and duration of such systems, an alternative to a manual design is to automatically synthesize the main parameters of the system. In this paper, we present an approach on the specific case of the scheduling of the flight control of a space launcher. The approach requires two successive steps: (1) the formalization of the problem to be solved in a parametric formal model and (2) the synthesis of the model parameters with a tool. We first describe the problematic of the scheduling of a launcher flight control, then we show how this problematic can be formalized with parametric stopwatch automata; we then present the results computed by IMITATOR. We compare the results to the ones obtained by other tools classically used in scheduling.