User's Manual Part 1

Page 4-17
3 Mar 2017
23-15-29
SYSTEM DESCRIPTION AND INSTALLATION MANUAL
JetWave™ System
© Honeywell International Inc. Do not copy without express permission of Honeywell.
NOTE: When the aircraft is on the ground and the AES is transmitting, and the ambient outside
temperature is very hot, then the mounting plate temperature can be exceeded. The exact
outside air temperature and operating conditions are installation dependent. Consult with
your hardware supplier for further details.
The KRFU must be electrically bonded to the airframe through contact with the base of the unit as
follows:
• At least one of the four mechanical attachment points must be used for electrical
bonding.
• Make sure that the mating surfaces are free from contaminants such as paints or
other non-co
nductive elements.
• A circular or elongated conductive areas are provided around two or more of the
mounting ho
les of the equipment base plate.
• The KRFU includes bonding measuring points on the
chassis bosses which are not used
for mounting feet.
The KRFU bonding resistance measured from the measuring
point and the surface upon which the
unit is mounted, must be less than 2.5 mΩ.
The KRFU bonding and KRFU interconnection details from and to either the TMA or FMA are
detailed along with the TMA or FMA installation instructions in subsequent sections.
E. KRFU/Waveguide Installation
(1) KRFU Installation Location with the FMA
(if applicable)
(a) The KRFU install location is airframe specific.
(b)
The KRFU can be installed inside the aircraft or external to the aircraft under the
radome. Hone
ywell recommends that the KRFU is installed external to the aircraft,
under the radome.
(c) When the KRFU is installed under the radome the conduction
cooled variant must be
used. This variant achieves cooling through its base plate and must be installed with the
provided thermal pad to ensure a good thermal path between the KRFU and the AIM or
LAIM. Refer to KRFU, before you install the KRFU LRU.
(d) When the KRFU is installed inside the aircraft e
ith
er the conduction cooled or forced air
cooled variant may be used.
(e) The KRFU must be installed close to fuselage mount antenna assembly so as to
minim
ize the waveguide/coax RF losses on the RF interconnect. Refer to Paragraph
4.6.C
4.7 Fuselage Mount Antenna (If applicable)
A. Introduction
The OAE FMA assembly will be installed on the top of the fuselage of the aircraft. For the
JetWave™ system to correctly point the antenna, the installation offsets should not exceed more
Draft as of 31 May 2017