From:
kym@kymhorsell.com
MrPostingRobot@kymhorsell.com wrote:
EXECUTIVE SUMMARY
- We look at yet another model of UFO interplanetary flight, this time
using detailed day by day planetary positions from an ephemeris s/w.
- All flights are assumed to start on a single planet -- either Jup,
Sat, Ura, Nep, or Plu -- and all travel to Earth is in a straight
line at constant speed. We don't bother to handle any intersection
of the flight and another planet or the Sun.
- Assuming flights start equally on any day of the epoch we gather the
distribution of end dates and compare that against UFO sightings
over time.
- It turns out the "most likely" parameters have UFO's mostly starting
from Neptune and transit speeds being a constant .25 AU/d -- approx
450 km/sec.
- A previous exercise -- using lagged regressions with some ambiguity
related to when a transit might start in relation to the minimum
distance between the origin and Earth -- estimated a speed around
850 km/sec.
...
I just read an article about the proposed "plasma magnet"
aka "Wind Rider" interplanetary drive first proposed 2005.
A group is trying to get some money together to create a demo of
the system to fly to Jupiter.
I'd heard of various "solar sail" concepts over the years but hadnt
realized this system was a bit different from my naive concept of
an actual sail that captures the solar wind (as opposed to sunlight).
Under the plasma magnet idea a large magnet creates a ball
of somewhat self-sustaining plasma around a spaccraft using more
or less available technologu that could extend out to kilometers.
The plasma ball acts like the fluff on some wind-blown seeds
and just gets blown outward from the sun by the stream of charged
particles. Acceleration is of course small, but accumulates quickly.
As present there is no way to slow down and it's proposed the
Jupiter mission could use nuclear-powered rockets to brake.
The reason I'm putting this here is the calculated speed of the
Wind Rider is very similar to the calculations I made from
the UFO sighting data versus planetary positions over the last 150y.
While the rise and fall of some fraction of UFO sightings is
consistent with constant-velocity journeys from e.g. Neptune
at a const ~450 km/sec, the speeds for the Wave Rider are theoretically:
Earth-Jupiter 3-4 wks
Earth-Saturn 6 wks
Earth-Neptune 18 wks
It's also just possible to launch an interstellar probe with the idea
provided the accelaration happens in the inner solar system.
It's expected a probe could leave the solar system around 300 km/sec --
5x+ faster than the Voyagers.
But the top speed for planetary trips is claimed to be 450-600 km/sec,
smack in the middle of the ranges I've previously calculated for
the UFO models.
Of course the Wave Rider can not fly INTO the solar system. As I
mentioned above, it can't even brake (by itself) when it reaches
a target inside the solar system.
But it might give some clue as to what kind of techn could be
responsible for brigking some kind of spacecraft from (say)
the outer planets to the inner system at a rate of ~500 km/sec.
--
This New Deep Space Propulsion System Rides Like A Leaf on the Solar Wind
The Debrief, 20 Oct 2021
Wind Rider, also called a Plasma Magnet, is a solar wind catching sail
that can reach the outer solar system quickly without chemical fuel.
[Jupiter 3-4 wks; Saturn 6 wks; Neptune 18 wks. Interstellar probes
could leave the solar system at 300 km/sec].
https://en.wikipedia.org/wiki/Plasma_magnet
--- SoupGate-Win32 v1.05
* Origin: www.darkrealms.ca (1:229/2)