Letters

Letters 08-03-2015

Real Brownfields Deserve Dollars I read with interest the story on Brownfield development dollars in the July 20 issue. I applaud Dan Lathrop and other county commissioners who voted “No” on the Randolph Street project...

Hopping Mad Carlin Smith is hopping mad (“Will You Get Mad With Me?” 7-20-15). Somebody filed a fraudulent return using his identity, and he’s not alone. The AP estimates the government “pays more than $5 billion annually in fraudulent tax refunds.” Well, many of us have been hopping mad for years. This is because the number one tool Congress has used to fix this problem has been to cut the IRS budget –by $1.2 billion in the last 5 years...

Just Grumbling, No Solutions Mark Pontoni’s grumblings [recent Northern Express column] tell us much about him and virtually nothing about those he chooses to denigrate. We do learn that Pontoni may be the perfect political candidate. He’s arrogant, opinionated and obviously dimwitted...

A Racist Symbol I have to respond to Gordon Lee Dean’s letter claiming that the confederate battle flag is just a symbol of southern heritage and should not be banned from state displays. The heritage it represents was the treasonous effort to continue slavery by seceding from a democratic nation unwilling to maintain such a consummate evil...

Not So Thanks I would like to thank the individual who ran into and knocked over my Triumph motorcycle while it was parked at Lowe’s in TC on Friday the 24th. The $3,000 worth of damage was greatly appreciated. The big dent in the gas tank under the completely destroyed chrome badge was an especially nice touch...

Home · Articles · News · Features · Spy Drones
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Spy Drones

Harley Sachs - September 1st, 2005

When we first sent men into orbit they reported that the only man-made object visible from space was the Great Wall of China. Now astronauts report that at their altitude of about 100 miles they can plainly observe the environmental devastation caused by humans. Deforestation, the resulting erosion, and coastal pollution are visible from space.
Unfortunately, satellites to monitor these developments are expensive to launch and they orbit the earth about every 90 minutes. It would be better if observations could be made continuously at a lower altitude. Enter the UAV, the Unmanned Aerial Vehicles.
The goal is to develop a drone that will fly indefinitely over a chosen area, sending down pictures to observers on earth. The UAV will be the latest evolution of the unmanned drones first developed by the Israelis in their continuous struggle against Palestinian terrorism. The Israeli drones, controlled from the ground, sent back television signals to pinpoint the sites, for instance, where rockets were being launched.
The Israeli idea was further developed for the U.S. forces and it is estimated that as many as 800 such drones are now patrolling the skies of Afghanistan and Iraq. The drones are so small that they are virtually invisible to conventional radar. Follow the path, for instance, of a helium filled balloon some child has released. It rises higher and higher, but soon your eyes are no longer sharp enough to spot it. That’s the beauty of a drone that’s invisible from the ground and doesn’t risk the life of a pilot or the expense of a slow-flying plane if it’s shot down.
But the ideal UAV must fly indefinitely, circling the target area possibly for months without landing. To fly indefinitely means no refueling. To do that requires solar power.
After the first human-powered airplane crossed the English Channel, the feat was repeated by a solar-powered airplane. Of course, it could fly only as long as the sun provided energy to the panels on the wings.
Now for another acronym: HALE, standing for high-altitude long-endurance. A new HALE drone, built by former UK defense research lab QinetiQ, will push the boundaries for eternal planes a bit further. What it needs to keep flying at night is battery power. As Dr. Rogoyski, a key authority on the project, reports, the key to success of the HALE UAVs is the rapid advance in solar panels and lithium batteries.
If a lithium battery array with a 20% efficiency can be developed, those high-flying HALE drones will be able to stay up indefinitely, able to reach anywhere on the earth in less than 24 hours. Then those drones will be able to monitor crops, drought, and other agricultural factors. Drones are not just for fighting terrorists anymore.
I remember building model airplanes when I was a kid in the days of balsa wood, tissue paper, and propellers powered by a rubber band. My biggest model was able to take off and actually fly a few feet before running out of rubber power. Imagine what it would have been like to fly it on solar power alone.
Of course, that’s what Pegasus is supposed to do. It’s hard to imagine a plane with a wing span of 16m and a light weight of 27kg (that’s 53.3 feet and 52 pounds for the metrically challenged). One person could easily carry it. To achieve that the solar panels must be paper thin, the skeleton of ultra light carbon fibers, and the batteries and the transmission equipment incredibly small and lightweight.
The drones already developed have broken altitude records, flying as high as 94,000 feet, the edge of space. The HALE will fly in the stratosphere. Maybe they should have named it Icarus.

 
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