FALLON APUSORBITAL SYSTEMS
Earth’s blue atmospheric horizon viewed from orbit
SOFTWARE & SYSTEMS ENGINEERING

Software for Complex
Engineering Systems.

Fallon Apus Orbital Systems develops software for autonomous
systems, engineering assurance and operational resilience.

Our proprietary ArcScript research examines anomaly handling, operational state,
recovery decisions and the evidence an engineer needs to review them.

Discuss an Engineering Problem Explore Our R&D
A BRITISH SOFTWARE AND SYSTEMS ENGINEERING COMPANY SPACE: A LONG-TERM APPLICATION DOMAIN
Autonomous systems+Engineering assurance+Operational resilience
RESEARCH, NOT FLIGHT HERITAGE

Space is a long-term application domain. Our current work is research and prototyping—not certified or operationally deployed technology.

Space research & evidence
WEEKLY BRIEFING

One engineering briefing,
every week.

A short, serious note on autonomy, assurance and resilience in your inbox each week. No noise.

WHO WE ARE

One concrete programme.
Five research questions.

Fallon Apus is the company. ArcScript is one proprietary, experimental R&D programme: programming-language and resilience-architecture research, currently at research and specification stage.

ARCSCRIPT · RESEARCH & SPECIFICATION

What happens when normal execution is no longer appropriate?

ArcScript explores integrity-first execution, explicit anomaly handling, operational state, recovery concepts and auditable evidence. The aim is to make the condition, the decision and its assumptions available for engineering review—not to claim software that cannot fail.

Read the ArcScript research questions
HOW WE WORK

We begin with the engineering problem, not a predetermined technology. We investigate the operational requirement, develop a bounded software approach, and test it against measurable evidence.

  1. 01Problem
  2. 02Requirements
  3. 03Architecture
  4. 04Prototype
  5. 05Evidence
  6. 06Validation
AREAS OF FOCUS

Three principal areas.

Current research and development directions. None of these technologies is presented as certified, field-proven or commercially deployed.

01

Autonomous systems

Exploring software architectures for systems that must operate under changing or abnormal conditions, including anomaly handling, bounded recovery and controlled autonomous behaviour.

02

Engineering assurance

Investigating software approaches for connecting requirements, engineering assumptions, implementation changes, verification activities and technical evidence.

03

Operational resilience

Researching software architectures designed to help engineering systems detect abnormal conditions, preserve evidence and maintain controlled behaviour.

CAPABILITIES & RESEARCH

Core capabilities

  • Software architecture
  • Systems architecture
  • Technical prototyping
  • Verification-oriented software design

Active research interests

  • Autonomous-system resilience research
  • Engineering evidence and traceability
  • Anomaly and recovery architecture
  • Experimental software R&D
WRITING

Notes from
the workshop.

Short technical notes on the problems we work on — change impact, traceability, assurance. Written for engineers.

ENGINEERING ASSURANCE

Change impact analysis: the first question every change should answer

Why the impact question is hard to answer well on complex programmes — and a bounded practice for answering it.

READ THE NOTE ENGINEERING ASSURANCE

Requirements traceability: why it breaks, and how to keep it intact

Why traceability decays on real programmes, and the practices that keep the matrix trustworthy.

READ THE NOTE ASSURANCE & RESILIENCE

Safety cases and assurance cases: arguing a system is safe enough

What a safety case is, how it fails, and what assurance means for autonomous systems.

READ THE NOTE
SPACE & ORBITAL SYSTEMS

Space remains
part of the mission.

Space remains a strategic application domain for Fallon Apus Orbital Systems. Long-duration and remote systems present demanding engineering problems involving autonomy, resilience, verification, communications constraints and evidence.

Our long-term research investigates how software architecture can contribute to these environments.

Explore our research programmes
WORK WITH FALLON APUS

Working on a difficult
engineering problem?

We are interested in conversations with engineering organisations working on autonomy, assurance, resilience and complex software systems.

Discuss an Engineering Problem
THE FALLON APUS BRIEFING

A clearer view of
what comes next.

Receive occasional updates, engineering insights, development notes and future technology briefings.

Thoughtful perspectives. No noise.