Rafael is unveiling the latest generation of its Python air-to-air
missile, considered to be the most advanced of its kind. Python
5 is currently undergoing flight tests and is expected to become
operational with the Israeli Air Force in 18 months.
The new missile follows-on from the 12-year-old Python 4 and offers
dramatic performance improvements. The imaging sensor seeker utilizes
a new 320 x 240 dual-band detector matrix, and is positioned in
a redesigned nosecone that enables over 100° off-boresight
coverage. Signal processing is provided in real-time by an array
of high-speed signal processors that effectively detect and track
'pixel-size' targets, with low false alarm rates. The seeker can
detect beyond visual range low-signature targets including aircraft,
helicopters and UAVs, in adverse background and countermeasures
environments. The use of dual band detectors and dual processing
channels provide excellent infrared-counter-countermeasures (IRCCM)
capability, which makes Python 5 practically immune to flares.
Another addition is the integration of a fiber-optic gyro-based
inertial navigation system (INS), which provides high pointing
accuracy and midcourse control, especially in lock-on-after-launch
(LOAL) engagements. Python 5 retains Python 4's dual-pulse rocket,
warhead and aerodynamic configuration. Rafael considered the benefits
of thrust vectoring, but decided that the current configuration
is superior, as it has more energy and maneuverability in the
end-game phase, where thrust vectoring systems loose energy due
to rocket burnout.
On engagements of targets beyond visual range (BVR), Python 5
can position itself accurately to detect targets at extended ranges.
By compensating for the aircraft wing twist, the missile's seeker
can be positioned in the direction of the target, while the wide
field of view enables effective coverage to ensure that even maneuvering
targets are detected. On BVR launches the missile uses trajectory
shaping to optimize range and performance. In the initial phase
of the trajectory, the missile climbs to a high altitude until
a point where the target can be acquired. Descending from that
peak, it can maintain high speed and maneuverability throughout
the chase and end-game, even after rocket burnout.
Compared to all current air/air missiles, Python 5 offers a full-sphere
launch and engagement envelope with extended maximum range, Its
capabilities are easily combined with other radar-guided BVR missiles,
which are employed in situations where clouds and other limitations
deny the use of IR missiles. The Python 5 can practically engage
at the front, sides and rear of the aircraft, as it is cued by
targeting information available to the pilot from local or remote
sources.
