Weird California sighting

typically British, like the Napier Nomad or Deltic, we just don't know how to keep things simple

Yep anything British....Complicated like Swiss watch but without the discipline and forethought of maintenance
Does she visit the land down under by chance?Millions of miles of nothingness out there in the red centre

a reply to: Blackfinger

i hv heard that the sea harrier was quite a bugger as far as maintenance is concerned.
In this thread will someone enlighten me if any of the platforms discussed use anti gravity per se or are the all aerodynamic platforms?
so far hv read about 10 pages

a reply to: Nochzwei

They're all aerodynamic.

a reply to: Blackfinger

She's been a lot of places but one or two are her favorite places to visit.

originally posted by: Zaphod58
a reply to: Nochzwei

They're all aerodynamic.

Ok thanks. now reading astro thread on black triangles

a reply to: Zaphod58

Would there be any videos or online reports from those who may have witnessed such a lovely sight?

a reply to: SonOfThor

Doubtfully. Most people just pass it off as a meteor.

a reply to: Zaphod58

Travels fast but not that fast. I first thought it was a flare falling until i paid more attention

originally posted by: beetee
a reply to: BASSPLYR

Yes, and I must say my eyebrows rose ever so slightly over the dimensions inherent in their concept with regards to the atmospheric "Dark Sky Station". Omnious name, by the way. 3 km across, thats no small thing to have up there.

But, of course, the best would be a craft that could do the whole Earth to Orbit transition without any need for a waystation.

It seems that graphene has some interesting derivatives, and I bet there are even more exotic materials also tucked away. So if you are basically weightless, and fuel consumption is mainly for station keeping and to counteract weather, I guess you would not need to refuel that often. And, if the power is indeed nuclear, well... then you could just stay up there, as a well hidden base of operations for all sorts of things. And if you could hide it in space?

I find it a little interesting that "oily black" seems to pop up in quite a few of the descriptions I have read of the smaller triangles. I don't know where optical stealth has gotten to, but I read about this canadian firm that claimed to have it nailed down and even claimed to have demonstrated it for the US millitary, but then the project was cancelled. Could be that it didn't work well enough, or even at all, but it could also be that it was never cancelled. Or maybe they had something better already.


BT

---

The Canadian Company I think you are talking about is HyperStealth
of Maple Ridge, British Columbia, Canada (about 50 km east of
Vancouver, Canada) which was of course PURPORTING to use
"Negative Refractive Index MetaMaterials" which SUPPOSEDLY
traps and bends light around a stealthed object or person.

HyperStealth:
www.hyperstealth.com...

I DO HAVE an issue with this company because
I ABSOLUTELY KNOW on a PERSONAL BASIS
just how hard and EXPENSIVE it is to make
even SMALL Negative Refractive Index
MetaMaterial squares because you
REALLY DO NEED CMOS chip-making
or Nano-Imprinting technology to
be able to make the micro-etches
necessary on a suitable base material.
That is VERY VERY EXPENSIVE!

It's actually FAR EASIER to use cloth-based
digital-ink technology which are microspheres
bonded to a cloth substrate that contain a
liquid crystal that changes orientation
and/or phase to create a reflective
surface of the desired colour depending
upon the application of an electrical current!

A computer and a camera could obtain
and digitize the surrounding environment
and map a particular incoming optical stream
to the opposite side mapping and modifying the
incoming pixels to fit the EXPECTED and/OR
CALCULATED optical pathways. This is an
ACTIVE visual stealth system since you
need some on-person/on-vehicle
computers and cameras to
map incoming light rays to
the opposite side of the
item being stealthed.
Digital ink is CHEAP
and you can get it in
COLOUR as many e-Book readers
contain the technology which is
a LOT CHEAPER than an active matrix
smartphone-type OLED or LCD/LED screen.

Anotehr method is to use tiny and very
flexible micro-optical fibres to PASSIVELY
trap incoming light rays and bend them
AROUND an object. By putting micro-lenses
at the endcaps of embedded optic fibres
(usually plastic multi-mode fibre) you
basically only need about 100 fibres
per square inch to reasonably
provide a visual stealth from
between two to 100 meters away.

The denser the fibre array
the better the stealth
and being PASSIVE, no other
onboard power or cameras
are needed BUT it is physically
heavy becuase of the number
of micro-fibres needed to be
bonded to hard or soft substrates
which will cover the stealthed
item or person.

AND FINALLY you could use micro-video-screens
arranged in squares 1 to 2 inches in size that have
BOTH MICRO-CAMERAS (i.e. CMOS chips with
Sony HyperHAD-like microlenses) and OLED pixels
to capture incoming video transmit to another
software/hardware identifiable square and emit
light at the opposite side. The communications
between the squares would be high-bandwidth
but low-power nearfield mesh-network communications
powered by either RF or inductance.

THAT is how I would do the Visual Stealthing
ON-THE-CHEAP because using a TRUE metamaterial
is just too darn expensive today !!!!

a reply to: StargateSG7

Old news

phys.org...

some nice looking models here.

i really dig this one.

originally posted by: BASSPLYR
a reply to: StargateSG7

Old news

===

I know it's old news, but I was trying to illustrate
that the Hyperstealth company I personally believe
simply does NOT have the financial or technical resources
to possibly build CMOS-type or Nano-Imprint metamaterials.
I suspect they are using active digital ink or passive
fibre-optic-based visual stealth materials bonded
to cloth (for personal stealth) or hard
backboard for vehicles.

A CMOS-type photolithographic stepper is nearly
$50 million these days and even a wide area beam
etcher is getting into the $20 million range!

And based on their website
it ain't happening! But since
DARPA DID give them some cash
for research and development,
I'm VERY CURIOUS as to their
means used for creating
Visual Stealth!

---

And for those who haven't seen
any of my other posts on high flying
aircraft, you might try and dimpling
the surface of an aircraft body with
hexagonal or round golf-ball like
dimples so that a turbulent boundary
layer airflow can be formed close
to the aircraft body as it flies
at a high speed. At the nose
of the craft, expel some hot
plasma created by literally
an on-board microwave oven
(i.e. Millimetre-wave cavity resonator
superheating ammonia or hydrogen).

The best paper I have seen that gets
to the heart of the matter in using
ammonia as a plasma is this one:

Plasma Enhanced Ammonia Combustion:
nh3fuel.files.wordpress.com...

So once the turbulent boundary layer is created
you dump a plasma flow from the bow of the aircraft
which SHOULD then stick close to the hull and start
pushing the atmosphere out of the way so you can
get REAL FAST AIRSPEEDS from conventional jets.
(i.e. possibly Brilliant Buzzard?)

...OR...you can create multiple boundary layers
and dump a FUEL such as hydrogen and an oxidiser
(LOX/Perchlorate?) IN-BETWEEN layers to create an
outside-of-hull scramjet-type engine which can boost
a plane to really fast speeds if necessary (i.e. a near-space plane!)
(i.e. possible the Pumpkin Seed Aircraft)

That's what I would do..... :-) :-)

===

Interestingly, I have ALSO HEARD from my
usual nebulous sources of a scale-up of
the Vortexing Dyson-vacuum-type of motor
which using vibrating/cyclonic nozzles to
create a high-speed spinning, highly-vapourized
fuel stream that is ignited and DOES NOT
use any jet-engine type compression-stage
at all !!!! The spinning vortex of ignited fuel
IS the compression stage!

See photo link to general cyclonic vortex creation image:
i.ytimg.com...

Radial Root Cyclone Technology which can be adapted to propulsion:
images-na.ssl-images-amazon.com...


That was news to me!

A Dyson Vacuum scaled up into a propulsion system!


===

For those of you who want to know about slower flying
high flyers here is the Aereon-26 craft:

en.wikipedia.org...

and

Plan drawing:
orig09.deviantart.net...

Stingray concet of same tech:
www.prospective-concepts.ch...

a reply to: grey580

This is a VERY COOL DESIGN way back from 1990 !

Scott, William, "Scientists' and Engineers' Dreams Taking to Skies
as 'Black' Aircraft," Aviation Week & Space Technology, 24 December 1990, page 44.

Neutral Bouyancy Stealthy Blimps that use LARGE angled ports to hide engine noise
and increase propulsion efficiency from large but very lightweight ducted fan-type engines.


People thought THIS was the scramjet pumpkin seed, but I personally
believe this is a Neutral Buoyancy craft design that was to be scaled up.
IT COULD BE used a Jet-based design! ...BUT...I think it works better as an airship!

s-media-cache-ak0.pinimg.com...



And these links:

DynaStat (1980's era):
www.hotairships.com...

US Bomber and small flyer designs:
aerospaceprojectsreview.com...

66.media.tumblr.com...

Aereon 26 in flight (1971)
files.abovetopsecret.com...

Future Aerial Cruise Ship -- Very cool design!:

www.abundantjourneysblog.com...


Westport, Virgina sighting of stealthy blimp?

www.listrocket.com...

Large bullet Airship:
greg.org...

a reply to: Zaphod58

I'm hoping Idaho is one of those places she loves to visit. I'll have to pay more attention.

originally posted by: grey580
phys.org...

some nice looking models here.

i really did this one.

a reply to: StargateSG7

What the hell is this? This isn't real is it?

Aereon in flight

a reply to: BASSPLYR

LOL...

a reply to: Zaphod58

I may, only may, have seen her, too. I was up in the Oregon Blue Mountains, and off east up high, a green flamed, what I thought was a meteor, object headed vaguely west by south-west.

Didn't think much of it, 'til you posted that. So, maybe...

originally posted by: Jonjonj
a reply to: StargateSG7

What the hell is this? This isn't real is it?

Aereon in flight

---

Actually I think it was a bad byline on the photo.
The Aereon program I know of came later in the 1980's/1990's I think.
I do think this is a neutral bouyancy Aereon program predecessor
but I have no idea on whether this particular photo is
of a model or an actual full-scale flying craft.

It's an AIRSHIP not a jet but since it is supposedly
from 1971 it's kinda hard to tell WHAT RnD program it's part of!

a reply to: seagull

Describe what you saw. I let you know if you were graced by her presence