h a l f b a k e r yWarm and Fussy
add, search, annotate, link, view, overview, recent, by name, random
news, help, about, links, report a problem
browse anonymously,
or get an account
and write.
register,
|
|
|
It's amazing how much disruption the percieved presence of an alleged drone can cause to civil aviation.
This can be easily and cheaply exploited to allow temporary interdiction of civil airports.
The product is simply a drone-shaped balloon, made of metallised film and appropriately printed on
the outside, filled with hydrogen, and adorned with some lightweight cardboard "legs" to ballast it in the correct attitude, plus some shiny coloured reflectors to mimic LEDs.
The hydrogen can be manufactured at the launch point by electrolysis, or by metal-acid reaction; it doesn't need to be pressurised as the pressure inside the envelope is only very slightly above ambient. Something as simple as a plastic bottle filled with battery acid and zinc filings will do the job nicely.
The unit is released upwind of the airport perimiter and drifts with the wind over the field. The metallised film ensures a nice strong radar echo, and from 50 metres it's very hard to discriminate it from a real drone. Besides, the authorities have to act on the precautionary principle.
A combustible time fuse - something as simple as a cigarette - secured under the envelope is used to cause the unit to self-destruct after a delay, thus hopefully destroying the bulk of the evidence.
Prior Art
https://www.dailyma...finally-solved.html
[bs0u0155, Jan 05 2019]
[link]
|
| |
//It's amazing how much disruption the percieved presence//
That is how far I had to read before I knew who had posted
this. |
|
| |
//cause the unit to self-destruct// |
|
| |
"I see. So, if I understand correctly, you are seriously trying to
tell the court that the incendiary and explosive properties of
the device you deployed were intended only to destroy the
device itself? Ladies and genitalment of the jury, does that
sound like a plausible statement to you?" |
|
| |
Still, [+] for promoting cigarette use. |
|
| |
There are numerous uses for cigarettes other than the one intended by the manufacturers. |
|
| |
Some of them you might well find surprising ... |
|
| |
[doc], please abstain from most activities involving bodily functions* whilst you are logged on to the 1/2B. |
|
| |
*Normal respiration, consumption of beverages, and sneezing are permissible. Pretty much everything else, particularly any activities involving excretion, is forbidden. |
|
| |
//There are numerous uses for cigarettes other than the one
intended by the manufacturers. // But, presumably, fewer
now that all cigarettes (at least in the UK) are designed to
self-extinguish if left unattended. |
|
| |
//fewer now that all cigarettes (at least in the UK) are
designed to self-extinguish if left unattended// |
|
| |
Other way around probably, roll ups have always self
extinguished if
left untended, they had to design them special to keep
burning when left alone I reckon. |
|
| |
Was probably a sales plan of some executive somewhere
way back, "hey bob, if these things
just kept burning when they rest them in the ashtray they'd
end up buying more wouldn't they, because they wouldn't
get to smoke the whole thing every time right? we should
see what our tech guys can do about that", they just had to
leave out the stuff they put in before to keep it burning. |
|
| |
Some of the ways cigarettes can be repurposed don't involve combustion anyway. |
|
| |
Like the one with a glass of water & leaching them in it
overnight? |
|
| |
Yup. Nicotine's amazingly toxic ... |
|
| |
As a deterrent to those who filch cigarettes from someone else's packet left lying on a table, a useful technique is to repeatedly spray (and then dry) a cigarette with a supersaturated solution of potassium chlorate. |
|
| |
The victim of previous thefts then produces a packet containing two cigarettes, one of which is subtly marked as "safe"; they take and light this one. The pack is then placed on the table within easy reach of the intended target. When the improved cigarette is lit, it instantaneously erupts in a ball of flame and smoke, and burns up completely, including the filter. |
|
| |
It is observed that once the injuries to their hand have healed, and their eyebrows have re-grown, the culprit is much more likely to consume only those tobacco products of which they are personally aware of the provenance. |
|
| |
A similar technique can be deployed against those who routinely help themselves to chocolates before being invited to partake; in that case, the confectionery is modified by the addition of a powerful and fast-acting laxative such as picric acid. |
|
| |
If you put in enough picric acid, you might end up with
explosive chocolates. |
|
| |