THE WORLD AROUND US
Mountain Views-News Saturday, June 27, 2015
B4
ROADMAP TO THE STARS
speeds necessary for interstellar flight.
“While not suitable for every spacecraft
design, this approach opens up radically new
possibilities,” Lubin said. “The project is a step
toward the first interstellar mission, but more
importantly we are studying and designing the
relevant technological base. This will give us the
ability to build a single photon driver capable of
sending out literally millions of low-mass probes.
“We’ve had to radically rethink our strategy
in order not to give up our dreams of reaching
the stars,” Lubin added. “DEEP-IN posits a
technological path forward that, while not simple,
is within our technological reach to begin.”
You can contact Bob Eklund at: b.eklund@
MtnViewsNews.com.
Illustration by Adrian Mann
A laser-powered wafer-thin spacecraftcapable of reaching Alpha Centauri in 20 years
may sound like the stuff of science fiction, but
it’s not. And while such a launch isn’t imminent,
the possibility of one in the future does exist,
according to UC Santa Barbara physics professor
Philip Lubin.
To further explore that possibility, Lubin and
his team in UCSB’s Experimental Cosmology
Group will study photo-driven propulsion—the
use of lasers as a means to power a spacecraft.
The group has been awarded one of 15 proof-ofconcept
grants from NASA Innovative Advanced
Concepts. The NASA program aims to turn
what sounds like science fiction into science
fact through the development of pioneering
technologies.
“One of humanity’s grand challenges is to
explore other solar systems by sending probes—
and eventually life,” said Lubin. “We propose
a system that will allow us to take the first step
toward interstellar exploration using directed-
energy propulsion combined with miniature
probes. Along with recent work on wafer-scale
photonics, we can now envision combining these
technologies to enable a realistic approach to
sending probes far outside our solar system.”
The UCSB group’s ultimate goal is to send
small probes to supplement the current long-
range remote sensing done by orbital and ground-
based telescopes. The funding will enable Lubin’s
team to create a more complete roadmap for
building a fully functional wafer-scale spacecraftcomplete with power, laser communications,
and controllable photon thrusters. The project,
Directed Energy Propulsion for Interstellar
exploratioN (DEEP-IN), will also chart laser-
driver elements that require technology
development.
The key to a functioning system lies in
the ability to build both the photon driver and
the ultra-low-mass probes. While capable of
propelling any spacecraft mass, lower-mass
probes go the fastest and are most suitable for
interstellar missions.
The DEEP-IN design keeps the main
propulsion driver back in Earth’s orbit (or nearby)
yet still capable of propelling highly integrated
spacecraft to speeds vastly higher than anything
scientists can currently achieve. The laser photon
driver would use photon pressure in the form
of streamed energy to power the spacecraft as it
travels away from Earth. With no intrinsic speed
limit, this technology allows for the relativistic
“THE SELF-SUFFICIENT HOME: GOING GREEN
AND SAVING MONEY” by Christopher Nyerges
Way back in 2000, my wife Dolores and I wrote a book called “Extreme Simplicity:
Homesteading in the City,” where we detailed how we grew food, recycled household water,
collected rain, raised animals, generated power, and more, in our average home in the hilly
outback of Los Angeles. We wrote the book because we constantly heard how difficult it was
to do the very things we were doing on a very low budget. We knew it wasn’t all that difficult
– you just had to make the commitment to do it!
The “Self-Sufficient Home” book is a continuation of that work, but in this case, we didn’t
strictly write about what we did in our own home. Rather, I interviewed at least two dozen
other home-owners and experimenters to discover the ways in which they were practicing
urban self-reliance. In every case, these were private individual who simply chose to take control of at least one
aspect of their lives, without waiting for some elusive government solution.
The book is a timeless work, detailing many of the ways that we can live with less water and still live well, and it
provides a guideline for others to do the same.
“Self-Sufficient Home” includes an interview with Altadena architect Steve Lamb, who shares all the ways in which
homes should be built to take advantage of natural principles such as sunlight, wind patterns, shade, and other site-
specific issues. Lamb points out that white roofs, and large overhangs helps keep houses naturally cooler. During
the course of writing the book, Lamb took me to a few of the places he’s worked on to show me how it’s also possible
to retrofit an “average” house to take advantage of these principles. We also visited Pasadena’s Gamble House to
look at the timeless architecture that keeps a place cool in the hot summer,
naturally and without electricity.
“Self-Sufficient Home” details the many ways to use less water, and to recycle
water. There are interviews with people who collect rain water, with everything
from low-tech to high-tech methods. In fact, this is now so “mainstream”
that all of the building supply companies routinely sell you all the hardware
needed to turn a bucket into a rain water catchment system.
My mother used to have us take the water from washing the dishes and pour
it outside on the fruit trees. Very low tech, of course.
In the 1970s, during a previous drought era, I worked with others to retrofit
many homes so their “grey water” (everything but the toilet water) could be
directed out into the yard for either a lawn, or garden. In most cases, this is
a simple plumbing job that any plumber could do, though it is still frowned
upon my most city’s Building and Safety departments.
Not big fans of the pointless grass front lawn, we also describe in the book
how we mulched the entire front lawn area (in 1986), and grew vegetables and
fruit trees on it. All the water came from the washing machine, whose drain
hose was disconnected from the sewer and re-routed out into the yard.
Of course, toilets use a lot of water too, so the simplest solution for most
people is to get the low-flow toilet. But did you know that there are many
alternatives to the conventional flush toilet, from the expensive high-tech
to the very simple low-tech methods that have been practiced for millennia.
Though local health departments take a very dim view of such toilets, they are proven water-savers that can be
safely used in most situations. In fact, I describe in my book two toilet alternatives that I tried successfully for many
months.
The book also addresses all the ways in which the average urban back yard can be utilized for food and medicine
production. This begins with an assessment of the resources already on the property, coupled with a list of your
specific needs and wants.
Where to get your seeds, how to produce plants from cuttings, and ways to create your own backyard fertilizers are
all included.
The book shares the specific ways in which various local people, with no government aid and with no whining, went
about producing their own electricity, and their own solar-heated water. The reader is guided through the steps of
making an electrical use assessment before going out to purchase any solar devices or components. It’s important
to do that assessment if you’re going to be your own power producer, so you build a system that is suitable to your
situation.
I figured that if I was able to do all these things with limited specific education, and a very low budget, than anyone
could do so! I dedicate the book to those I call the members of the silent revolution.
“Self-Sufficient Home” can be obtained via Kindle, and hard-copies are available wherever quality books are sold,
or on-line. This is a wonderful book and everyone should have a copy.
[More information about Nyerges’ classes and books is available at www.ChristopherNyerges.com, or via School of
Self-reliance, Box 41834, Eagle Rock, CA 90041]
Dude McLean with copy of
Self-Sufficient Home
|