ISO 5312-2023 PDF

Full title and description

ISO 5312:2023 — Civil small and light unmanned aircraft (UA) — Sharp injury to human body by rotor blades — Evaluation and test method. This International Standard specifies an evaluation and test method to assess sharp (cutting/puncture) injury potential to the human body from rotor blades of civil small and light unmanned aircraft, including an injury scale, test arrangements, requirements and reporting of results.

Abstract

This document defines procedures to evaluate and test the potential for sharp injury to persons caused by rotor blades of civil small and light unmanned aircraft (maximum take-off mass between 0.25 kg and 4 kg, corresponding to levels II and III in ISO 21895). It covers the injury scale, required test equipment and set‑up, test execution, measurement and criteria for reporting results for multicopters, unmanned helicopters and other rotorcraft UAs in the stated mass range.

General information

• Status: Published
• Publication date: October 2023 (2023-10)
• Publisher: International Organization for Standardization (ISO)
• ICS / categories: 49.020 (Aeronautics and space engineering)
• Edition / version: Edition 1 (2023)
• Number of pages: 10

Scope

ISO 5312:2023 applies to the evaluation and laboratory testing of sharp injuries to the human body that may be caused by rotor blades of civil small and light unmanned aircraft with maximum take-off mass from 0.25 kg up to 4 kg. The standard is intended for assessing injury potential of rotorcraft configurations such as multicopters and small unmanned helicopters; it does not cover larger aircraft, non-rotor propulsion hazards, or operational risk-management rules outside the laboratory test methods described.

Key topics and requirements

• Definition of an injury scale for sharp (cutting/puncture) injuries relevant to rotor-blade contact.
• Specification of test apparatus, dummy/target materials and anthropomorphic surrogates or sensors to measure penetration/cutting effects.
• Standardized test set-ups (blade engagement geometry, relative speed, blade condition and mounting) to produce repeatable results.
• Test procedures for static and dynamic contact scenarios representative of typical small UA rotor encounters.
• Pass/fail or classification criteria based on measured injury metrics and the injury scale.
• Requirements for documentation and reporting of test conditions, instrumentation, results and uncertainty.
• Applicability limits (mass range 0.25–4 kg; referenced classification levels II and III from ISO 21895).

Typical use and users

Manufacturers and designers of small unmanned rotorcraft use ISO 5312:2023 to evaluate and reduce rotor-blade sharp injury risk during product development. Test laboratories and conformity assessment bodies apply the test methods when performing safety evaluations and pre-certification assessments. Regulators, standards committees, safety engineers, and research institutions may use the standard to inform rules, product standards and comparative safety assessments.

Related standards

Standards commonly referenced alongside ISO 5312:2023 include ISO 21895 (Categorization and classification of civil unmanned aircraft systems) for mass and level classification and the ISO 21384 series (Unmanned aircraft systems — parts covering components, operational procedures and vocabulary). Other general safety and machine‑safety standards (for example those addressing injury measurement methodology and general risk assessment principles) can be used to complement the test methods in ISO 5312.

Keywords

unmanned aircraft; UA; UAV; rotor blades; rotorcraft; multicopter; sharp injury; cutting; puncture; injury scale; test method; safety evaluation; ISO/TC 20/SC 16

FAQ

Q: What is this standard?

A: ISO 5312:2023 is an International Standard that specifies evaluation and laboratory test methods to assess sharp injury (cutting/puncture) potential from rotor blades of civil small and light unmanned aircraft (0.25–4 kg).

Q: What does it cover?

A: It covers an injury scale, required test equipment and set‑ups, procedures for static and dynamic contact tests, measurement and pass/classification criteria, and reporting requirements for multicopters, small unmanned helicopters and similar rotor UAs in the defined mass range.

Q: Who typically uses it?

A: UA manufacturers and designers, test laboratories, conformity assessment bodies, safety engineers, and regulators use the standard to evaluate rotor-blade injury risks and to support product safety assessments and compliance activities.

Q: Is it current or superseded?

A: ISO 5312:2023 was published in October 2023 as Edition 1 and is current (published). Users should check for any subsequent revisions or national adoptions if up‑to‑date confirmation is required.

Q: Is it part of a series?

A: It is part of the body of standards for civil unmanned aircraft developed by ISO/TC 20/SC 16 and relates to classification and UAS series documents such as ISO 21895 and the ISO 21384 family; it is a single-issue standard focused on rotor-blade sharp-injury evaluation within that ecosystem.

Q: What are the key keywords?

A: Keywords include unmanned aircraft, rotor blades, sharp injury, injury scale, test method, multicopter, UAV, safety evaluation.