ISO 22072-2011 PDF

Full title and description

St ISO 22072-2011 — Aerospace — Electrohydrostatic actuator (EHA) — Characteristics to be defined in procurement specifications. This standard defines the general characteristics, requirements and design data to be included in procurement technical specifications for electrohydrostatic actuators intended to power aircraft control surfaces or other moving parts of an aerospace vehicle.

Abstract

ISO 22072:2011 provides a structured set of requirements and parameters that purchasers and designers should include in procurement documentation for electrohydrostatic actuators (EHA). It covers the unique characteristics of EHAs as an alternative to conventional hydraulically powered servo-control actuators, addressing functional performance, interfaces, environmental and safety requirements, testing and required supplier documentation so that procured actuators meet aircraft system needs and certification expectations.

General information

• Status: Published (confirmed at review; subject to revision process).
• Publication date: August 2011 (Edition 2 published 31 August 2011).
• Publisher: International Organization for Standardization (ISO).
• ICS / categories: 49.080 — Aerospace engineering.
• Edition / version: Edition 2 (2011).
• Number of pages: 12 pages (typical published PDF length).

Scope

This standard specifies the characteristics, performance parameters and design data that should be defined in procurement technical specifications for electrohydrostatic actuators to be used on aircraft. It is intended for EHAs that replace or supplement conventional hydraulic servo-actuators and focuses on procurement-level requirements rather than detailed design prescriptions. Topics include functional and dynamic performance, electrical and hydraulic interfaces, safety and redundancy, environmental and EMC requirements, verification and test criteria, and required supplier documentation and marking.

Key topics and requirements

• Definition of functional performance requirements (force/torque, stroke/travel, speed, accuracy and bandwidth).
• Electrical and power characteristics (supply voltages, power quality, connectors, faults and protection).
• Hydraulic/mechanical interfaces where applicable (fluid type if present, fittings, leakage limits, mounting interfaces).
• Control and signal interfaces (command, feedback, sensors, communication protocols and timing).
• Reliability, redundancy and failure modes (fault tolerance, safe states, single-fault and multi-fault behavior).
• Environmental and EMC requirements (temperature, humidity, vibration, shock, altitude, salt spray, electromagnetic compatibility).
• Testing and verification requirements (type, production and acceptance tests, endurance and duty-cycle characterization).
• Documentation, marking and traceability (technical data, drawings, maintenance information and certificates).
• Maintenance and support provisions (spare parts, recommended service intervals, repairability criteria).

Typical use and users

ISO 22072:2011 is used by aerospace prime contractors, aircraft systems and flight control engineers, procurement specialists preparing technical purchase specifications, actuator manufacturers and suppliers, certification and conformity assessment bodies, and maintenance organizations. It is applicable where an EHA is being specified or evaluated for use on fixed‑wing or rotary aircraft and other aerospace vehicles.

Related standards

Relevant and often-cited documents and practices include the earlier ISO 22072:2005 (withdrawn and superseded by the 2011 edition), industry recommended practices and SAE documents addressing EHA/EHM design, duty-cycle characterization and testing (for example SAE ARP6154, SAE ARP6025 and related SAE information reports), and other actuator standards and aerospace system-level standards produced by ISO/TC 20/SC 10 and by aviation authorities. Users should also consider actuator-specific requirements from applicable airworthiness authorities and OEM specifications when applying ISO 22072:2011.

Keywords

electrohydrostatic actuator (EHA), actuator procurement, aerospace actuators, EHM, electrohydraulic, flight control actuator, procurement specification, actuator testing, redundancy, EMC, environmental qualification

FAQ

Q: What is this standard?

A: ISO 22072:2011 is an international standard that specifies the characteristics and procurement-level requirements for electrohydrostatic actuators intended for aerospace applications.

Q: What does it cover?

A: It covers the parameters and information that should be included in procurement technical specifications for EHAs — performance, interfaces, environmental and EMC conditions, safety and redundancy requirements, testing and documentation — but does not prescribe detailed internal design solutions.

Q: Who typically uses it?

A: Aerospace OEMs, systems engineers, procurement and specification writers, actuator manufacturers, test laboratories, and certification authorities involved in specifying, supplying or approving EHAs.

Q: Is it current or superseded?

A: The 2011 edition is the published (Edition 2) version that replaced the 2005 edition. The standard has been subject to periodic review and may be under revision processes at committee level; users should check with their national standards body or ISO for the latest status before use.

Q: Is it part of a series?

A: It is part of aerospace standards maintained by ISO/TC 20/SC 10 concerning actuators and flight control systems. It is associated by topic with other actuator and module recommended practices and information reports from industry bodies (for example SAE documents) but is a stand‑alone procurement‑specification standard.

Q: What are the key keywords?

A: Electrohydrostatic actuator, EHA, actuator procurement, flight control actuator, redundancy, environmental qualification, testing, electrical interface, hydraulic interface, actuator performance.