MILITARY, AEROSPACE & DEFENCE INDUSTRY FOCUS
MONITORING THE HYDRAULIC SYSTEMS ON SUPERSONIC DEMONSTRATOR AIRCRAFT
Lightweight and high reliability 490 series pressure switches from Value Engineered Products (VEP) are being used for safety monitoring on various hydraulic systems
on the Boom XB-1 supersonic demonstrator aircraft. The XB-1 is a supersonic demonstrator and a
prototype for the Boom Overture – a 55 seat Mach 2.2 commercial airliner. Overture is leveraging technological advancements in aerodynamics,
aerostructure, turbofan engine design and fuel efficiency, and is targeted for a first flight in the mid-2020s. As the first independently developed supersonic jet, the XB-1 is helping to refine and test these key supersonic technologies and ensure the efficiency, safety and reliability for Overture. The aluminium pressure switches feature dual-springs for accuracy
and stability and are designed to meet the FAA’s 15-minute flame test requirement. Field adjustable, these are suitable for altitude ranges between 1,000 to 50,000ft, and feature a piston which is designed to allow high proof pressure. Of additional benefit, there are a wide range of pressure ports and electrical connectors available, and the series can be designed to meet most customers’ specifications. VEP offers a comprehensive range of products which is characterised
by highly durable switches with low pressure set points and high proof pressure, as well as models with low differential and dual differential pressure. Aimed at pressure set-point switching tasks where reliability and safety are paramount, standard and customised switches are widely deployed for landing gear and brake safety systems, rudder control assist, air speed and air flow detection, etc. VEP, part of the USA-based World Magnetics family, is represented in the UK by Variohm EuroSensor.
Variohm EuroSensor
www.variohm.com AERONAUTIC INTERCONNECTIONS
Depending on the location of the equipment in the aircraft, at an altitude of 10,000m the outside temperature can drop to -50˚C, while the internal temperature of the engines can exceed 1000˚C and the temperature close to the engines can reach 200˚C. So, equipment must be capable of operating correctly in these temperature ranges. SOURIAU’s interconnection solutions suit critical environmental applications. Aircraft manufacturers and OEMs must qualify their equipment
according to strict standards, so the company provides a range of connectors, fittings and contacts qualified according to industry standards such as MIL-DTL, EN, MS and HE. Some manufacturers apply their own internal standards for which SOURIAU is also qualified, in particular BACC (Boeing), ASNE (Airbus) and ESC (Rolls Royce). For applications in harsh environments, circular connectors are
generally preferred over rectangular connectors. In the interior and the exterior of the aircraft, reducing the total weight is a major objective, so SOURIAU offers thermoplastic connectors and fittings which it states are 30% lighter and offer superior performance to aluminium. New production standards also favour solutions that can be integrated
at a lower cost. Specific innovation projects are focused on making cabling easier, and developing tools that reduce connector installation costs. For several years now, SOURIAU has been turning to agile project management, including its lab equipped with a 3D printer, so its engineers become familiar with these new technologies. This means it can develop a new idea and present it to its customers very quickly.
SOURIAU
https://www.souriau.com/en-en DESIGN SOLUTIONS | SEPTEMBER 2019 13
MILITARY, AEROSPACE & DEFENCE INDUSTRY FOCUS
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