We’ve previously discussed
that sensors are more important than weapons (see, “Weapons Don’t Matter”). It doesn’t matter what kind
of around-the-world range your weapon has if you can’t find a target for it. The challenge, of course, is to get the
sensor to a useful location which, almost by definition, means in enemy
controlled air/land/water space since that’s where the targets of interest will
be. Actually, that’s not the real
challenge, is it? Getting the sensors to
a useful location is doable. The real
challenge is getting them to survive long enough to conduct useful surveillance
and transmit the targeting data back to attack units.
Before we go any further,
let’s think about what kinds of sensors we’re talking about. The US military’s main means of generating long distance
targeting data is through the use of aviation platforms, both manned (P-8, E-2,
EP-3, AWACS, etc.) and unmanned. The
problem with manned platforms is that they are hideously expensive,
defenseless, non-stealthy, and slow.
That combination of characteristics means that they won’t be risked
penetrating deeply into enemy territory to find the kind of targets we want to
find. A notable exception might be the
F-35. It has the stealth and range to
perform moderately deep penetration targeting.
What it lacks is the kind of wide area sensor coverage that other manned
surveillance platforms have. It’s just
not possible to put that kind of sensor on a fighter sized aircraft. Still, in sufficient numbers, it might prove
useful in that role. None of us know
exactly what kind of wide area search capability the F-35 really has, if
any. The down side to using the F-35 as
a penetrating sensor platform is that every F-35 dedicated to that role is one
less for the crucial air superiority battles that will be going on
concurrently.
Increasingly, therefore, the
military’s emphasis is on unmanned platforms (UAVs). There are two problems with using UAVs for
deep penetration surveillance and targeting.
- UAVs are quite small in terms of volumetric and
weight capacities and just can’t mount the kind of long range, wide area
sensors that manned aircraft can.
This can be partially offset by the long endurance of UAVs which
allows for greater coverage even if the sensor field of view is somewhat
limited. This leads us to the
second problem.
- UAVs are slow, not particularly stealthy, and not
very maneuverable. In short,
they’re not survivable in enemy airspace.
A sensor that can’t survive long enough to accomplish its
surveillance is useless.
So, how can we conduct
successful deep penetration surveillance and targeting?
In order to answer that,
let’s briefly consider what we can’t do.
- We can’t use P-8’s. They’re large, slow, and
non-stealthy. Combine those
characteristics with the beacon like nature of their radars and they’re,
literally, flying targets waiting to be destroyed long before they can
find a target.
- We can’t use large, expensive UAVs because deep
penetration surveillance, by definition, will be dangerous and have a high
attrition rate for the surveilling aircraft. We simply won’t be able to afford to
routinely lose $100M+ UAVs. Heck,
we balked at $1M LRLAPs so we certainly aren’t going to buy enough $100M+
UAVs to fill the deep penetration role!
So, what does that leave us?
That leaves smaller, cheap
UAVs.
Wait, didn’t we say that
small UAVs just can’t carry large enough and powerful enough sensors to
effectively conduct wide area surveillance?
Yes, we did say that. However, if
we use enough low effectiveness UAVs we can cover the desired area even if each
individual UAV is only marginally effective.
Coverage is provided by numbers rather than individual capability.
Wait, didn’t we also say
that UAVs are not survivable? Yes, we
did say that. However, if we use enough
non-survivable UAVs, a sufficient number will survive to do the job. The enemy has only a limited supply of SAMs,
fighter aircraft, and air to air missiles at any given location and point in
time. To make the point with a
ridiculous example, if we sent 1000 UAVs into an area, the enemy just wouldn’t
have enough weapons and aircraft to respond to all of them and even if they
did, they wouldn’t have enough time to hunt them all down individually before
the survivors accomplished their mission.
Of course, the key to both
of the preceding points is that the UAVs must be cheap – cheap enough to flood the
area and attain coverage and cheap enough to absorb the expected losses.
Can we build UAVs that are
effective enough and cheap enough? Well,
that’s the question, isn’t it? I believe
we can if we ruthlessly focus on what the actual requirements are rather than
start loading up the UAV with “wishes” that would turn it into a
strike/fighter/ISR/refueler aircraft, all in one.
Currently, we have small,
cheap UAVs. They are many different
“brands” in use. A typical example is
the Boeing Insitu Scan Eagle. Scan Eagle
is 4.5 ft long with a 10 ft wingspan and weighs 44 lbs. It has a max speed of 82 kts and an endurance
of 22 hours. A cruising speed of around
50 kts gives a theoretical range of 1100 nm (radius of 550 nm). The practical range is currently limited by
the communications package which is good for only 62 miles. The UAV is launched from a miniature catapult
and recovered by a shyhook. Launches can
be from vessels as small as a Mk V Special Ops boat. Payloads include EO/IR or a mini-Synthetic
Aperture Radar.
According to Wiki, the Royal
Australian Navy tested a Scan Eagle with a Sentient Vision Kestrel Maritime
ViDAR high resolution digital video camera that is claimed to be able to cover
13,000 square nautical miles over a 12-hour mission (1).
So, with some improvements
in communications range, there is no reason why such a UAV could not fill the
need for a small, cheap, effective surveillance UAV.
The cost of the Scan Eagle
is listed by Wiki as $3.2 million (2006) for a system consisting of four UAVs,
a ground control station, remote video terminal, the SuperWedge launch system
and Skyhook recovery system (1). Of
course, once the control station and other equipment is purchased, additional
UAVs can be bought for a fraction of the complete system cost. Aviation Today website lists the cost for the
UAV alone as $72,000 (2). Mass
production would lower that further.
![]() |
| Scan Eagle and Catapult |
The next question is how to
deploy these small, cheap UAVs. Ideally,
they would be carried by a dedicated UAV “carrier”. Such a ship would carry hundreds of UAVs and
would accompany every surface group to provide the long range coverage that is
needed to effectively utilize the long range anti-ship missiles that are
[hopefully] coming to the fleet. A UAV
carrier would be a commercial cargo ship suitably modified to conduct high
tempo UAV operations. Basically, this
just means a small “flight deck” (a row of catapults and some space to move the
UAVs) to launch UAVs from and several recovery nets/hooks. Nothing fancy. We can build supertankers for $100M so this
should be a $200M effort.
Alternatively, small UAVs
can be operated by the dozens from any ship or land bases where geography
permits.
The biggest challenge to
this approach is reversing the military mindset of “bigger and more
complex”. Everything the military builds
is bulked up with added gadgets rather than stripped down to minimum
essentials.
Our current plan to use a
few large and expensive aircraft, both manned and unmanned, for deep
penetration surveillance and targeting is unworkable in high end combat. We need a different approach and small, cheap
UAVs offers a viable alternative.
_____________________________
(1)Wikipedia, retrieved 20-Dec-2016 ,
(2)Aviation Today website,
2004


