Defense against UAV's

Mark Borgerson wrote:
In article ,
says...
wrote:

:
:Fred J. McCall wrote:
: wrote:
:
: : Hint #3: A fighter with a 20mm Vulcan will flat mess up a "small,
: : slow UAV" and actually has a radar on board so that he can see it and
: : some actual training on how to do an air intercept, neither of which a
: : helicopter has.
: :
: :Always assuming that the radar is capable of getting a lock on the UAV.
:
: No such assumption is necessary. It's not like in the movies.
:
:What makes you so certain that gunnery radar WILL lock on to a stealthy
:UAV?

What makes you think that fighter aircraft use gunnery radar?

:The UAVs are designed, after all, to avoid being picked up by
:radar. For defence planning purposes the assumption has to be that
:radar will not probably work against them, unless and until it is
roved to be capable of doing so. To take any other attitude would be
:foolish complacency.

Which means nothing, since a fighter attacking with a gun uses
EYEBALLS to get the target and they're way up close.

: :If not, his chance of scoring a hit is remote - the speed differential
: :is so huge that he could do no more than 'spray and pray'.
:
: Hint #1: What do you think the landing speed of a jet fighter is?
:
: Hint #2: Guns work off the pilot's eyeballs.
:
:And exactly how will the pilot aim his guns, if the radar gunsight
:won't lock on and the sights he's got are no better than WW2 standards?

He'll aim them the same way he aims them against anything else. Times
have changed since WW2 and no 'radar gunsight' is required.

:Hint #1: in WW2 the Luftwaffe found that only between 2% and 5% of the
:shots they fired hit the target - and they were shooting at B-17s! Now
:scale down the target size to a UAV with a wingspan of a couple of
:metres, and work out how much ammo would have to be fired to nail one.

About 5 rounds.

Hmmm, coming up behind a UAV with a 6-foot wingspan, the cross-sectional
area of the target might be only 1 or 2 square feet. How close does
the fighter pilot have to be to hit a 2 square foot target with 5
rounds?

:Hint #2: unlike the Luftwaffe's ammo, the current standard US 20mm
:aircraft SAPHEI shell, the PGU-28/B, does not have a tracer - so the
ilot will have no idea where his shots are going.

Nor does he need to. It's NICE to have radar, but it's hardly
necessary in order to score a lot of hits with a modern gun and HUD.
SNIP

Mark Borgerson

An idea occurs, why not use the the overpressure from a high speed pass
to upset the UAVs' guidance system? Done with wing tip pressure on V-1s
in WWII, if these things are to small for ammo use air pressure to tip
them over.