This SK 37E is painted grey. It's the only one which
will be painted thus.
This SK 37E is painted grey. It's the only one which
will be painted thus.
Recognition features to tell a SK 37E from an unmodified
SK 37 Viggen (apart from it carrying chaff/flare, jammer
or laser detector pods) is the antenna on the spine and
the thin yellow line on the nose radome delineating
the area where it's been made thinner to allow for
the internal jammer.
U22/A
is the self protection jamming pod developed for
AJ/S 37 Viggen.
U95
is the self protection jamming pod developed for
JA 37 Viggen. With the additional control panel
and colour display in SK 37E the system as a
whole is called Axel.
KB
is a chaff and flare dispensing pod used on
S 35E Draken and AJ/S 37 Viggen.
G24
is the nose mounted internal S or C band
surveillance radar jammer. (Band has to be
chosen on the ground.)
Was used in the predecessor J 32E Lansens,
the only such equipment.
BT-53
is a laser reflector pod.
FR 31 for Flygradio 31 is a regular communications radio to allow the EWO to communicate independently of the pilot. The blade aerial on the spine is for this radio.
APP 27 for "Apparat 27" (device 27) isn't exactly "additional" in that it's the RWR fitted to AJ/S and SK 37. The receiving antennas are at the top of the tail cone and in the pointed pods in the wing leading edges.
GPS has been added and integrated with the navigation system.
Mil-std 1553 databus
to enhance the mission planning and
debriefing functions.
This is one of the unmodified SK 37 Viggens.
The SK 37E modified Viggens are 37807,08,09,10,11,13,14,15,16,17 coded F 4 70-79.
The non-modified SK 37s are
37801,02,03,04
coded
F 4 80-83.
About SK 37/SK 37E at F 4's web site: SK 37E Viggen - text in Swedish, but there's photos of the equipment.
More information on Swedish military aviation
and Viggen.
This document last updated 2000 July 11
by Urban Fredriksson