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Aerospace &
Defense > Hydraulic Components
Hydraulic Components
http://www.elaster.it
Valves
Since many decades Elettronica Aster design valves
for a wide range of applications.
Many components are constituted by a manifold and several cartridge
valves, controlled by solenoids or lever.
The apparatus are designed for the common aircraft pressure
condition of 207bar (3000psi) or 276bar (4000psi). All the
components are qualified with Military and Customer Specifications.
All the items can manufactured with proper port adapter as required
by the Customer.
They hydraulic components comprise:
· Reservoirs, boot-strap or non pressurized type;
· Accumulators (bellow, piston, …)
· Filtering modules;
· Service Valves for control (flow, pressure, direction, …).
    
Actuators & Servo Actuators
Several kinds of Actuators and Servo Actuators, Fly
by Wire (FBW) or manual., are designed and presently in use in
helicopter and aerospace applications.
The Servo-Actuators are controlled typically by a feedback system:
position sensors (LVDT) or pressure transducers permit to monitor
the main characteristics value, and control servovalves and
solenoids to guarantee the defined setpoint.
Otherwise the Actuators are constituted by a manifold and several
cartridge valves, piloted by solenoids or lever.
The apparatus are designed for the common aircraft pressure
condition of 207bar (3000psi) or 276bar (4000psi). All the
components are qualified with Military and Customer Specifications.
All the items can manufactured with proper port adapter as required
by the Customer.
    
Wheel & Rotor Brakes
Brake and
braking systems, including pumps, are developed specifically for
helicopter applications.
A complete Brake System is constituited by:
· - Wheel or Rotor Brakes (with friction pads)
· - Pressure switch check sensor
· - Hand or Foot Pump
    
Heat
Exchangers
In the years from 1990 Elettronica Aster has acquired
capability in the design and manufacturing of Heat Exchanger
realized according to particular customer's requirements.
These are cold plates used for cooling electronic components with
liquid. Heat is transferred from the hot electronic components to
the surface of an aluminum plate and then to the cooling liquid
which flows in a coil machined in the plate.
A cover plate is usually bonded or dip brazed to the cold plate,
forming a flow path for the cooling fluid which contacts the surface
for maximum heat transfer.
These processes are also the result of previous experience in
bonding and brazing of radar antenna components.
The cold plate surface is precision machined to ensure the thermal
contact with the hot electronic components.
Heat Exchangers are designed and manufactured according particular
customer requirements. Particular techniques are used in order to
satisfy the needs the functional and installation characteristics.
The application of specific processes like bonding, welding, dip or
vacuum brazing are evaluated time by time.
These plates are developed for aerospace electronics and use
Coolanol 25R or Poliyalphaolefin (PAO) as coolant fluid. They are
aluminum plates jointed by vacuum brazing technology and 100%
verified to be leak-free.
The particular construction allows to produce tin-wall plates (1.5
mm) maintaining a high stiffness; their lightweight provide a high
stiffness-to-weight ratio. Fittings are provided for hydraulic
connection.
Particular applications are also studied.
    
FOR
more information please contact us
09-9565070
sales@relsys.co.il
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