Overview
ISO 7166:1985 is an international standard developed by the International Organization for Standardization (ISO) that specifies the geometric configuration and partial dimensions for rails and studs used in aircraft passenger equipment and cargo restraint systems. This standard ensures that passenger seats, office furnishings, partitions, and cargo tie-downs are securely fastened within the aircraft structure with interoperable components. The primary objective of ISO 7166 is to guarantee interchangeability and compatibility of these restraint elements across various aircraft models, improving safety and maintenance efficiency.
The standard addresses the detailed geometry of the floor rails commonly installed longitudinally in aircraft, alongside the studs that interface with passenger and cargo fixtures. While strength requirements and complete rail shapes depend on specific applications and materials, ISO 7166 focuses on the critical dimensions needed for correct fitting and alignment.
Key Topics
- Rail Geometry: Defines partial dimensions of the aircraft floor rails which serve as attachment points. Rails typically transmit loads in multiple directions - vertical, lateral, longitudinal - to the aircraft’s structure.
- Stud Configuration: Specifies the size, shape, and positioning tolerances for studs (single or multiple pairs) that engage with the rails to secure seats and cargo. Studs may include features such as rings for strap attachment.
- Interchangeability: Emphasizes dimension tolerances that ensure components can be universally used and replaced, facilitating aircraft outfitting and cargo restraint.
- Load Direction and Interface: Details the interaction between rail faces and the studs under load, including shear studs designed to handle forward and rearward forces.
- Dimensional Precision: Establishes strict tolerances such as concentricity, angular deviations, and edge finishing to maximize safety and reliability.
- Applicability: Designed mainly for aircraft passenger seats and cargo fixtures, including nets secured to pallets, but it excludes the strength criteria and complete design of rails.
Applications
ISO 7166:1985 is primarily used in the aerospace industry for:
- : Ensuring passenger seats can be rapidly installed, replaced, or reconfigured with standardized rails and studs.
Открыть превью (PDF)Aircraft — Rail and stud configuration for passenger equipment and cargo restraint
