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Innovative helicopterapplications
Unlocking EGNOS benefits
HElicopters Deploy GNSS in Europe
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For more information about HEDGE, please contactthe consortium project manager or the projectsupervisor at the GSA.
Nick McFarlaneHEDGE consortium project managerHelios29 Hercules WayFarnboroughGU14 6UUUK
Tel: +44 1252 451 651 Fax: +44 1252 451 [email protected]
Disclaimer: The project has received Community research funding under the 7th FrameworkProgramme. This material reflects only the author’s views and the Community and theGSA are not liable for any use that may be made of the information contained herein.
HElicopters Deploy GNSS in Europe (HEDGE) is aproject commissioned by the European GNSSSupervisory Authority (GSA) and part-funded underthe EU’s Seventh Framework Programme (FP7).
The aim of the project is to develop and demonstratenew helicopter approach procedures as well as otherEGNOS applications for general aviation. The initiativebuilds on the outcomes of the GIANT project(Framework Programme 6).
Most activities within HEDGE are directed towardshelicopters, but the project also covers fixed-wingactivities.
This project will significantly help the aviationindustry by:
● Progressing new EGNOS-enabled helicopterapplications that will enhance safety and increasethe commercial viability of helicopter operations.
● Demonstrating fixed-wing EGNOS approaches(known as APV SBAS) for small aircraft and GeneralAviation.
● Demonstrating a “total system concept” usingEGNOS for navigation and surface/airbornesurveillance.
See inside for three examples of helicopterdemonstrations and flight trials being undertakenby HEDGE.
About HEDGE
The Benefits
Contacts
http://hedge.askhelios.com
HElicopters Deploy GNSS in EuropeHElicopters Deploy GNSS in Europe
The HEDGE Consortium
The nine partners of the HEDGE consortium includetechnical and management consultancies; researchand development specialists; and fixed-wing andhelicopters operators.
Hans de WithHEDGE project supervisor European GNSS SupervisoryAuthorityRue de la Loi 56B-1049 BrusselsBelgium
Tel: +32 2 299 2004Fax: +32 2 292 [email protected]
On HEMS missions, helicopters sometimes have to flyin poor meteorological conditions at all hours. Thismight result in HEMS missions being cancelled due toadverse weather conditions. The use of EGNOS willdecrease the risk of accidents and enable a significantimprovement of life-saving helicopter operationsunder all meteorological conditions.
HEDGE will aim to certify an Agusta 109 helicopterwith Rega and perform helicopter specific Point-in-Space (PinS) approaches with EGNOS certifiedequipment to the Hospital at Interlaken, Switzerland.This will encompass the entire development processincluding the procedure description and design,operational concept and FAS datablock, demonstrationflights with data logging. A technical / economicfeasibility study and roll-out plan will be accompaniedby required safety assessments and pilot questionnaires.
In the GIANT project, a new type of approachprocedure called SOAP was designed for helicopterapproaches to oil rigs. This overcomes a number ofthe limitations that are currently inherent during lowvisibility approaches that utilise the weather radaras an approach aid.
In HEDGE, prototype avionics will be constructedand demonstrated. The new SOAP approach has thefollowing advantages over the old one:
● Less reliance on the weather radar
● Use of EGNOS gives high navigation accuracy
● New approach allows a “straight line” procedurefrom final to missed approach
● Positive guidance from EGNOS signal gives muchlower crew workload.
● EGNOS vertical guidance is used and provides across-check against the existing altimeter source
Most air rescue helicopter operators are constrainedin similar ways to HEMS - being only able to flyduring day and night under visual flight rules thatrequire minimum conditions in terms of visibility anddistance from clouds.
HEDGE will demonstrate that EGNOS enabledapproaches improve both the safety and service levelof helicopter rescue operations in bad weather.
During HEDGE, an experimental avionics suite will beinstalled on a Eurocopter AS350 helicopter operatedby TAF. This will be used on flight trials of an EGNOSenabled APV SBAS (LPV) procedure using steepapproaches at La Cerdanya aerodrome in themountainous region of the Catalan Pyrenees.
With the possibility of continuous operationsregardless of the weather conditions, several Spanishrotorcraft operators and aerodromes are followingdevelopments of these flight trials with a keen interest.
Helicopter Emergency Medical Services (HEMS) SBAS Offshore Approach Procedure (SOAP) Mountain rescue approach
HElicopters Deploy GNSS in Europe
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