The company will be
responsible for the development of this system for the project of the new Green
Regional Aircraft under the European Clean Sky program, which already involves
participation by CESA under another project. Also cooperating in this
initiative is the Andalusian company MDU, which will carry out design and
manufacture of the control unit for the new electromechanical actuador"

(Compañía Española de Sistemas Aeronáuticos) has tak­en a further step to
consolidate its presence under the Clean Sky Program, the Joint Technology
Initiative promoted by the European Union for the development and validation of
new technolo­gies to achieve more efficient and sustainable aviation by 2020.
This Spanish company, which is participating in various initiatives under the
program, has been awarded a new project entitled E-RUDDER for the development,
manufacture, flight testing and certification of an elec­tromechanical actuator
for the primary flight control system, which will control the rudder of the
Green Regional Aircraft (GRA).

is also working on the ARMLIGHT initiative, another research project which also
forms part of the GRA program involving develop­ment of an electromechanical
actuator for the landing gear system of the new aircraft (see issue 22 of
Aeronáutica Andaluza). CESA has ac­cordingly bolstered its presence under the
GRA program and the Clean Sky project, one of the programs receiving the most
European fund­ing in recent years for the development of new green technologies
and processes in order to meet the objectives set by the Advisory Council for
Aeronautics Research in Europe (ACARE).

will be working on E-RUDDER together with the Italian manu­facturer
Alenia-Aermacchi (Finmeccanica Group), which is in charge of Systems Technology
for All Electrical Aircraft under the GRA program, and will determine the
specifications for development of the actuator. These will be based on the
current requirements for actuation of pri­mary flight controls for regional
aircraft such as the ATR 42 and the ATR 72. According to the Spanish company,
these requirements may easily be adapted to those of a possible aircraft to
substitute these two mod­els which would incorporate the technological advances
developed. These specifications will be jointly determined by CESA and
Alenia-Aer­macchi, with the Spanish company offering its extensive experience
on previous programs to develop electromechanical actuators.

reaching agreement on the structure of the work packages under the project,
CESA has already carried out conceptual design for the new rudder actuator. The
company will now proceed with de­velopment of the detailed specifications of
the agreement with Alenia- Aermacchi, along with establishment of the
guidelines for the tests to be performed. According to the project schedule,
within 13 months the first actuator prototype will be available for validation
and ground test­ing, which needs to be completed prior to commencing the flight

Andalusian presence

Although CESA is heading this work package under the GRA
project, various other Spanish aerospace companies will also be cooperating.
These include the Andalusian company MDU, which specializes in manufacture of
electronic and on-board systems and will be designing and manufacturing the
actuator control unit, along with its optimization with a view to its future
integration on the aircraft.

project also includes the development of a test bench to demon­strate the
actuator's performance and for use during subsequent flight certification. The
technological corporation Tecnalia will also be assist­ing MDU and CESA with
the development of the actuator control unit.

test phase will consist of three stages:

Validation/assessment of the motor on the test bench specifically de­veloped by

Ground testing of the actuator in the “Copper Bird” of the GRA (a test bench
that simulates the main aircraft systems).

Flight testing by Alenia-Aermacchi. The actuator will then be installed
together with the test bench or a simplified version of the same in the
passenger cabin of an ATR 72. One of the main objectives of these tests is to
evaluate the impact of the actuator on the aircraft's power generation system.

Synergies with other

initiative will also have important synergies with other research and
development projects which are currently being carried out by CESA in the field
of electromechanical actuators, such as SINTONIA and PROSAVE2 (both of which
are CENIT projects funded by the Cent­er for Industrial Technological
Development) and ACTUATION 2015 (under the 7th Framework Program of the
European Commission).

One of the most important
aspects of these possible synergies is the potential for optimization of
mechanical components, power electron­ics, the control unit, actuator health
monitoring and power regeneration concepts. This will contribute to enable future
aircraft to better exploit the power consumption/generation functions of
electromechanical ac­tuators.