The Embraer Legacy 500 and the

smaller Legacy 450 variant are

mid-sized business jets which

began development in 2007.

Embraer started development from

the ground up with a totally new

design.

The System Acra KAM-500 Data Acquisition

equipment was used in an Ethernet

system. It was able to handle faster

data rates to enable the removal

of separate dedicated systems

such as avionic bus recorders and

engine monitoring units.

The Results • Lower risk and future proof

solution

• A 30% reduction in telemetry

bandwidth

• Saved time and money

throughout the organization

Embraer reduces risk and

costs with future proof

data systems

Legacy 500

COMMERCIAL

OFF-THE-SHELF DESIGN

The System An Ethernet system was used to accommodate faster data rates. This would enable the removal of separate dedicated systems such as avionic bus recorders and engine monitoring units.

The resulting system was more compact and less complicated making it easier to setup, install and remove. Embraer installed three sub-systems – a ‘big and

slow’, a ‘high-speed’ and an ‘optional’ third system. • The ‘big and slow’ system consists of 18 chassis

with all parsed data (PCM) being sent by telemetry.

• The high speed system acquired data up to a rate of 8Ksps from accelerometers and strain gauges.

• The third system consisted of four chassis and was used to capture additional bus data.

Acra KAM-500

Lowers Risk Proven on every platform type in

all environmental conditions

COTS hardware with short delivery

times

Reduces Cost of Ownership Reduced inventory of spares due

to common product line

Lower installation, setup and

maintenance requirements

Modular design greatly extends

system lifetime

FTI by Design Designed to minimize the data

transfer time from sensor to screen

Guaranteed predictable data

Simultaneous sampling occurs

across the complete system

MODULAR & REUSABLE

LONG TERM SOLUTION

“ We wanted a system we could trust to produce reliable data for the entire lifecycle of an aircraft as well as for future

developments.

The Results I

Lower risk and future proof solution for FTI campaign

and subsequent aircraft development programs

• CWC-AE’s ability and commitment to develop backward

compatible modules to accommodate future bus technologies was vital to ensure a future proof system.

• Developing a consistent core product line, rather than a program orientated approach, lowers risk with long term support and development.

• A key requirement was a system Embraer could trust to

produce reliable data for the entire lifecycle of an aircraft.

An example of this was how a single Acra KAM-500 system was able to deliver the same data in both PCM and

Ethernet streams simultaneously to satisfy certification needs.

“ Domingos Henrique Beolchi Rios

Flight Test Engineer

Embraer

We looked at three other vendors but only Curtiss-Wright were prepared to do the system

the way we wanted it – as opposed to taking what they had.

“

The Results II

A 30% reduction in bandwidth through

packetization and iNET-X technologies

• Using aperiodic transmission with the iNET-X protocol

reduced avionics bus data bandwidth requirements by approximately 30%.

• Achieved by eliminating the buses stale data and removing the need to oversample the bus.

• This effective strategy optimizes PCM bandwidth

and facilitates additional data transfer for real-time data analysis.

“

OPTIMIZED TELEMETRY

BANDWIDTH

FASTER

DATA ACCESS

The Results III

Saved time and money throughout the organization

Unifying the data acquisition and database structures across multiple platforms and teams saves time and cost by reducing • Training • Data conversion

• Operational requirements Full authority and control over the acquired data, without the involvement of a third party, ensures it can be distributed to any department without delay.

This kind of effort has many long term benefits as it can be exploited over many years through different programs.

For more information visit

www.cwc-ae.com

Curtiss-Wright Controls Avionics & Electronics

cwc-ae@curtisswright.com

665 North Baldwin Park Boulevard City of Industry, CA 91746, USA

Phone: 626-851-3100

Landscape House, Landscape Road Dublin 14, Ireland Phone: +353-1295-1264