Flyg- och rymdteknik

This document specifies methods for measuring the characteristic impedance of a cable and is based on EN 50289-1-11.

This Part of EN 1915 specifies the conditions to be taken into consideration when calculating the strength and the stability of GSE according to EN 1915-1 and the EN 12312 series under intended use conditions. It also specifies general test methods. NOTE The methods given in this standard demonstrate one way of achieving an acceptable safety level. Methods that produce comparable results may be used. This Part of EN 1915 does not establish additional requirements for the following: - operation elsewhere than in an airport environment; - operation in severe conditions, e.g. ambient temperature below -20 C or over 50 C, tropical or saturated salty atmospheric environment; - hazards caused by wind velocity in excess of the figures given in this European Standard; - earthquake, flood, landslide, lightning and more generally any natural catastrophe. This Part of EN 1915 is not applicable to GSE which are manufactured before the date of publication by CEN of this Standard.

This document specifies: — the tests for finished wiring, including connectors and, if necessary, terminals, terminal ends, junction boxes, circuit breakers, etc.; — the requirements for verification of aircraft electrical wiring; — continuity of circuits; — dielectric strength; — insulation resistance; — partial discharge for operating voltages above 230/400 V a.c. (see also TR 4907 ). These tests do not concern equipment installed in the aircraft (see operation of systems) and do not apply to the wiring used in instrumentation.

This document is applicable to the marking of aerospace vehicle electrical wires and cables using ultraviolet (UV) lasers. This document specifies the process requirements for the implementation of UV laser marking of aerospace electrical wires and cables and fibre optic cables to achieve an acceptable quality mark using equipment designed for UV laser wire marking of identification codes on aircraft wire and cable subject to EN 3475 100, Aerospace series — Cables, electrical, aircraft use — Test methods — Part 100: General. Wiring specified as UV laser markable, and which has been marked in accordance with this document, will conform to the requirements of EN 3838. This document is applicable to the marking of airframe electrical wires and cables using ultraviolet (UV) lasers. The laser process practices defined in this document are mandatory.

This document specifies the minimum requirements for the qualification, acceptance, delivery and inspection of standard parts by the aerospace industry and its manufacturers. This document is valid for standard parts and their assemblies as described in a product standard, if mentioned therein. This specification can also be applied to other parts when specifically invoked by the terms of delivery. Parts/sections of this document are not applicable in cases where the product standard stipulates requirements that differ from this specification.

This document specifies the characteristics of bolts, shouldered, thin hexagonal head, close tolerance shank, short thread, in titanium alloy, anodized, MoS2 dryfilm coated, for aerospace applications. Classification: 1 100 MPa /315 °C . These bolts are intended to be used with washers according to EN 2414 and nuts according to EN 3230.