Science Information

MAV Propulsion and Testing


Perhaps we should be looking into advancing the propulsion systems of MAVs, small UAVs by using magnetic propulsion to spin the propellers. When testing a UAV by trying to fly it under the canopy of trees or around sparsely populated tree areas or in cities with streets and housing we may find we have difficult issues. If the aircraft as proper angle of attack you might be able to slow it down, reverse the propeller spin, do a level flight tail slide, reverse the propeller again and fly right out of a box canyon or alley way. Or take pictures of your enemy, turn around and leave?

In the case of a MAV you could have wings like a dragon fly and simply back up without turning around and putting your vehicle in a slightly different path than before and try to switch the navigation code to fly back out and remember where you came from, because that takes significant memory and that right now takes significant space meaning you add weight to the MAV whose payload may only be low double digit ounces or less. By backing up and memorizing only the last 200 let's say commands from the central network, it could easily command the tiny 15 cm MAV to reverse.

By using magnetic propulsion the delay from going to forward speed by the propeller to zero to reverse would not be significant in time, so the MAV would not stall out, because the reverse direction would be nearly instantaneous. Also realize that magnetic propulsion maybe less of a draw on the batteries to fly the unit. Which maybe able to take energy from this premise:

http://204.78.57.12/shns/g_index2.cfm?acti...RICITY-10-21-03

http://ej.iop.org/links/q92/I4Pq8hz8LfqbGsa4R88e1g/jm3620

The optical flow sensors with minimal storage could remember the flight path and/or commands of 200 or so airfoil surface movements. You see the difficulties and challenges of MAVs working in close proximity to obstacles will be a challenge of the future.

"Lance Winslow" - If you have innovative thoughts and unique perspectives, come think with Lance; www.WorldThinkTank.net/wttbbs


MORE RESOURCES:
This RSS feed URL is deprecated, please update. New URLs can be found in the footers at https://news.google.com/news


NPR

After Paul Allen Co-Founded Microsoft, He Changed Brain Science Forever
NPR
The occasion of that interview was Allen's $100 million gift of "seed money" to launch the Allen Institute for Brain Science in Seattle. The institute's initial goal was to create a detailed online atlas of gene expression in the mouse brain, a job the ...
Paul G. Allen, 65, Remembered as Pioneer Philanthropist in Science and TechnologyGenetic Engineering & Biotechnology News

all 287 news articles »


Science Magazine

Sea-level rise could drown dozens of Mediterranean heritage sites
Science Magazine
Homes, businesses, and coastal infrastructure aren't the only things endangered by sea-level rise: A new study suggests nearly 80% of World Heritage sites along the Mediterranean coast are at risk, too. These include the medieval city of Rhodes in ...

and more »


Science Magazine

Why scientists had trouble predicting Hurricane Michael's rapid intensification
Science Magazine
Hurricane Michael roared into Mexico Beach, Florida, on 10 October as the strongest storm ever to strike the Florida Panhandle in terms of wind speed, and the third strongest to make landfall in the continental United States. The storm caused severe ...

and more »


Science Magazine

MIT to use $350 million gift to bolster computer sciences
Science Magazine
“Roughly 40% of our current undergraduates are majoring in computer science or computer science and X,” says MIT Provost Martin Schmidt. With only 10% of the university's 1000 faculty capable of teaching computer science courses, Schmidt says, “having ...
MIT reshapes itself to shape the futureMIT News

all 192 news articles »


The Guardian

Fact check: Donald Trump's claims versus climate science
The Guardian
Verdict: False The US government's own Climate Science Special Report, published under Trump, finds that “it is extremely likely that human activities, especially emissions of greenhouse gases, are the dominant cause of the observed warming since the ...
For Some Poor Countries, Climate Science Comes Too LateThe Atlantic
Trump may not know what's behind warming, but scientists doStatesman Journal
IPCC - SR15IPCC
Twitter
all 893 news articles »


The Denver Post

Proposition 112: Dissecting the science behind the oil and gas setbacks initiative
The Denver Post
Welcome to the science behind Proposition 112, the oil and gas setbacks measure that will likely be among the most complex ballot issues to ever go before Colorado voters. The initiative aims to increase the required distance of any newly drilled wells ...

and more »


Kennebec Journal & Morning Sentinel

Our View: Proposed lobster rules not based on science
Kennebec Journal & Morning Sentinel
A scientific paper that called for stricter regulations on Maine's lobster fishery to protect endangered right whales plainly illustrates a two-sided problem. We need policymakers who will rely on science, and they need science that they can rely on ...

and more »


Popular Science

Five science tricks to scare up a better Halloween costume
Popular Science
Halloween is coming, which means the race for the most awesome costume is on. Fortunately, a little science can add some serious fright to your get-up. These tricks only require a little advance preparation, but your friends will remember the result ...



Eos

Can You Express Your Science in 17 Syllables?
Eos
Last week, the AGU Hydrology Section Student Subcommittee challenged scientists traveling to the Fall Meeting this December to explain their research in a single haiku. The format of a haiku—a poem split between three lines, with the first line having ...



Scientific American

The Science of Inequality
Scientific American
High economic inequality negatively impacts nearly every aspect of human well-being—as well as the health of the biosphere. Contrary to intuition, it affects the wealthy and the middle classes, not just the poor. Here several leading researchers ...


Google News

home | site map | Xray Photography
© 2006