As we’re all painfully aware, the F-35 has been in
development for two decades and is still years away from front line service in
any effective manner (notwithstanding the Marine Corps’ PR stunt proclaiming a
fictional IOC). The danger with such a
protracted development is that by the time the aircraft reaches squadron
service, its technologies may be obsolete.
Most of us recognize this danger and worriedly track Chinese and Russian
aviation developments to see what capabilities they’ll have when the F-35
enters service. However, there is
another F-35 “enemy” whose technological capabilities should have been vastly
overmatched by the F-35 but are rapidly catching up and may surpass the F-35. Who is that enemy? It’s the F-18 Hornet. Yes, the lowly, basic, non-stealthy Hornet is
rapidly gaining capabilities to rival or surpass the F-35.
We know about the Advanced Super Hornet with conformal fuel
tanks that would add 260 miles to the combat radius according to flight testing,
enhanced stealth with a 50% reduction in frontal RCS, longer range, advanced
cockpit avionics, and an enclosed weapons pod.
What else is being done to improve the Hornet? Well, here are a couple of new technologies.
Harris Corp., Government Communications Systems Division, has
received a $29M contract for the procurement of 138 Distributed Targeting
System (DTS) kits for F/A-18E/F and EA-18G (1). DTS provides enhanced targeting capability
for the Super Hornet. It is part of the U.S. Navy’s F/A-18E/F Network Centric
Warfare Upgrades program and the F/A-18E/F Flight Plan, which is intended to ensure
that the Super Hornet remains ahead of emerging threats in coming decades.
DTS increases pilot and aircrew situational awareness and
precision targeting when engaging air-to-ground targets, in part by using
geo-registration technology. Geo-registration
technology compares images taken from tactical sensors with an onboard imagery
database to produce highly accurate target coordinates.
From a Flight Global website article (2),
"The distributed targeting system allows you to self-generate
GPS-quality mensurated coordinates onboard the airplane autonomously,"
Morley [Captain Frank Morley, Program Manager for the F/A-18E/F and EA-18G]
says.
“That means that the
Super Hornet will be able to use coordinates generated by its sensors, for
example its Raytheon APG-79 active electronically scanned array (AESA) radar or
its Raytheon AN/ASQ-228 Advanced Targeting Forward-Looking Infrared (ATFLIR)
pod, and compare that to a precise onboard imagery database to generate precise
weapons quality coordinates.”
Now
doesn’t that sound a lot like the F-35’s vaunted sensor fusion technology? The biggest difference is that the DTS is
being produced today rather than being just a never-ending developmental project.
In
addition to the DTS, the Hornet has an Infrared Search and Track (IRST) sensor
in the works. IRST is a passive,
long-range sensor that searches for and detects heat sources. The system can simultaneously track multiple
targets and provides air-to-air targeting capability. Being a passive sensor, IRST does not give
off radiation and is harder to detect as well as being immune to radar jamming.
“Meanwhile, the Boeing
is about one year into a development program to field a new infrared search and
track (IRST) pod that should be fielded on the Super Hornet fleet by late 2016,
Morley says. Developed in conjunction with Lockheed Martin,
the new sensor is an evolution of the Northrop Grumman F-14D
Tomcat's AN/AAS-42 IRST camera. Boeing upgraded the Tomcat's camera technology
for foreign F-15 sales, Morley says. The variant of the sensor that will be
added to the Super Hornet is a further development of Boeing's F-15
developments.”
“For the Super Hornet,
the USN opted for a podded-solution. A pod avoids retrofit costs, Morley says.
An internal system would require modifications to the aircraft's outer mold-line
and avionics hardware changes, which would require extensive testing. Nor does
the USN need the pod for every mission, Morley says. The IRST is only required
for air-to-air focused missions like fleet air defence or air superiority. As
such, the USN will only buy about 170 pods, which it will use only as needed,
Morley says.
One of the unique design
features of the new IRST pod is that it is built into an external fuel tank.
Because the aircraft's centerline station is the optimum position for the IRST
pod, it has to take the place of the Super Hornet's ever-present drop-tank.
In order to preserve the
Super Hornet's range, the USN opted to have the sensor built into the forward
half of the fuel tank. That way, some two-thirds of the fuel is still available
for use.” (2)
IRST
completed its first flight aboard an F/A-18 Super Hornet in February.
Further
planned upgrades also sound like the F-35 sensor fusion (2).
“…one of the most
important planned capabilities will be better multi-sensor integration (MSI).
The aircraft will eventually be able to correlate all of the disparate
information generated by the radar, ATFLIR, electronic warfare systems and
data-links into one clear tactical picture …”
A
Global Aviation website report sums up the Hornet’s development (3),
“Other
F/A-18E/F Super Hornet next-generation capabilities included in the
flight plan are advanced fused sensors, Active Electronically Scanned Array
(AESA) Radar, Counter Electronic Attack (CEA), Distributed Targeting System
(DTS), Multi-sensor Integration (MSI), Anti-Surface Warfare (ASuW), IP-Based
Linked Networks and advanced air-to-ground and air-to-air precision weapons
operating on an open-architecture backplane.”
Again,
the key difference between the F-35 and these Hornet technologies is that the
Hornet’s are in production or nearly so and are being fitted to capable, combat
ready aircraft. By the time the F-35 is
ready, it may find itself struggling to keep up with the Hornet rather than the
other way around.
(2)Flight
Global Website, “USN developing new Super Hornet upgrades”, Dave Majumdar, 28-May-2012
(3)Global
Aviation Report, “Navy’s IRST System Successfully Completes First Flight Aboard F/A-18”,
February 19, 2014
