HR Smith Group's unique combination of RF design and advanced
thermoplastic composite technology places it at an unparalleled
advantage over the majority of existing other antenna manufacturers.
A new generation of advanced engineering thermoplastics has enabled HR Smith
(Technical Developments) Limited to create antennas which have unique rain erosioc
qualities allied to improved impact resistance. high temperature capability and
thermal stability. Additionally, superior electrical and mechanical properties
and enhanced chemical resistance are combined with on-time delivery. and a lower
cost compared to 'conventional antennas.
The new thermoplastic antennas are the latest state-of-the-art products to be
offered by the HR Smith Group and are designed to meet the needs of the aircraft
industry into the twenty-first century.
The antennas are produced to give optimum electrical performance that is maintainable
throughout the life of the antenna. together with a mechanical integrity hitherto
not achieved with thermoset composite antennas.
HR Smith can offer direct replacements for the majority of in-service antennas
with, in most cases, off the shelf delivery.
antennas are constructed from advanced thermoplastic resins
which have many advantages over their 'old technology' thermosetting
The advantages include:
rain erosion and impact resistance.
temperature capability and thermal stability.
and adhesive free structures.
degree of product reproducability.
use of advanced thermoplastics in the construction of currently
available HR Smith products has given proven performance
enhancement, with over fifteen years in-service use on high
speed military aircraft.
The traditional methods of assembly with component parts such as connectors,
baseplate and radiating element being housed in a pre-formed thermoset shell
resultant cavity, have been replaced by revolutionary, patented, manufacturing
and design features. These features substantially eliminate the current failure
modes of traditional antennas.
A new molding technique forms the radiating element as part of the process
and encapsulates the baseplate and connectors.
The resultant antenna does NOT have any voids, printed circuit
board radiating elements or unsupported radiating elements which can give rise
to failures on current antennas. These antennas will not delaminate as some
fibreglass antennas have done in the past. Combining this with our dry
fit conductive anti-corrosion RF gaskets, gives users 'fit-and-forget'
antenna systems at a reduced cost.
elimination of a separate radiating element and cavity in
the advanced molding process ensures that the original performance
is maintained throughout the life of the antenna.
Thermoplastics offer void and adhesive free assembly which provides the high
quality electrical properties required for the antenna to give optimum performance.
For the first time, the new range of thermoplastic antennas offers a quality
product that can have a mean time between failure approaching that of the aircraft's
life and can provide a 'fit-and-forget' solution.
The standard range of antennas is manufactured to be direct replacements for
the range of antennas as detailed in the Antenna Cross Reference listed below.
(This is not the full range of antenna)