Random Quarks

Random quarks of information of relevance to me and hopefully to the random reader of this blog. You may encounter posts on math, science, history, film noir, baseball, economics, and whatever else catches my eye.
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oupacademic:

Baseball elite are traveling to Cooperstown, NY for the 2014 Baseball Hall of Fame inductions this weekend. Puerto Rico born right fielder Roberto Clemente was the first Latin American player to be enshrined in the hall in 1973.
Image credit: Roberto Clemente, public domain via Wikimedia Commons.

I loved watching him play ball when I was a kid growing up near Pittsburgh.

oupacademic:

Baseball elite are traveling to Cooperstown, NY for the 2014 Baseball Hall of Fame inductions this weekend. Puerto Rico born right fielder Roberto Clemente was the first Latin American player to be enshrined in the hall in 1973.

Image credit: Roberto Clemente, public domain via Wikimedia Commons.

I loved watching him play ball when I was a kid growing up near Pittsburgh.

The Voice of the Enterprise computer, Star Trek You cannot make a list of kick-ass sci-fi females and not include Majel Barrett‘s voice. She was sexy, charming, and hilarious as the Enterprise’s computer, and she tied the whole Star Trek universe together. (via The Top 40 Kick-Ass Female Sci-Fi Characters - AfterEllen.com, Page 6)

Sometimes I think it’s really a smartass TV :P

Sometimes I think it’s really a smartass TV :P

Love mathematics 

ramblingamblinengineer:

Fireworks filmed from a quadcopter. Because you know you’ve always wondered what it was like.

Nice way to view #fireworks.

(via georgeburdell)

becausebirds:

Hawk grabbing a water balloon in slow motion! I made this into a gif set for you lazy folks who can’t bother with a video.

more bird stuff on becausebirds.com

Raptors are impressive.

(via ceesalese)

theworldairforce:

C5 Galaxy - Approach and Touchdown 

All those wheels allow the C-5 to land on airfields you’d never imagine such a huge aircraft would be able to land on.

mapsontheweb:

North America divided into 13 Regions of Equal Population

Read More

""The future of air travel is bright – and fast. Since the dawn of the jet age in the 1960s, commercial air travel has remained relatively unchanged. However, today’s demand for smarter and faster technologies is driving the next generation of commercial travel with supersonic aircraft, which could potentially cut U.S. coast-to-coast travel time almost in half.
With the commercial air travel industry expected to grow to more than five times its current size, the economic impact and significant time savings of a more efficient supersonic travel system will become increasingly important in our global economy.
Quieting the boom
One of the major hurdles of commercial supersonic air travel is the noise associated with it. At speeds greater than Mach 1, disturbances of air pressure around the airplane merge to form enormous shock waves resulting in sonic booms. For example, when you hear a car coming, you can hear it before it passes you because you hear increments of that sound continuously over a duration of time. In the case of a supersonic aircraft, you get all that sound over a very short duration of time causing a boom-like effect.
If you’ve never heard a sonic boom, let’s just say it’s quite loud. And, that’s putting it lightly. Because of this, current air traffic regulations restrict supersonic planes from flying over land. For more than a decade, Lockheed Martin has been working to solve these problems.
“To achieve revolutionary reductions in supersonic transportation airport noise, a totally new kind of propulsion system is being developed,” said Michael Buonanno, Lockheed Martin manager of the NASA N+2 program. “We are also exploring new techniques for low noise jet exhaust, integrated fan noise suppression, airframe noise suppression and computer customized airport noise abatement.”
Buonanno explained how over the years, his team has tackled several of these technology thrust areas.
“We’ve developed a vehicle conceptual design and built a sub scale wind tunnel model to test the sonic boom characteristics that we predict will validate our ability to shape the airplane to generate much lower sonic boom levels.”
One of their breakthroughs was being able to develop the tools and codes that allow engineers and designers to accurately predict the loudness of a plane’s sonic boom. With the availability of these tools, a designer can develop an airplane concept that significantly reduces boom levels. Though it is not practical to completely eliminate noise, these advancements would result in a sonic boom that sounds much more like a distant thump rather than a sharp crack.
Lockheed Martin’s design would accommodate 80 passengers and have the ability to travel more than 5,000 nautical miles with sonic boom levels one hundred times quieter than the now-retired Concorde supersonic passenger airline. The Concorde was first flown in 1969 and was one of only two supersonic passenger airliners to have entered commercial service.
How would it work?
“It’s all about the design details,” said Buonanno. “You need to able to manage the progress of volume and lift to create series of closely timed small shocks rather than one big one. Our testing has given us the confidence we need to have a good understanding of how sonic boom levels work and how to design airplanes to meet the required boom levels.”
The aircraft would have to be very long, so that the volume and the lift of the plane are allowed to gradually build up and then decrease. The engine is also extremely important. Under the N+2 program, Lockheed Martin has worked with General Electric and Rolls Royce to look at engine concepts that have high fuel efficiency and can meet the takeoff and landing noise constraints.
“The engine itself does not contribute to a sonic boom but you have to have a good integration of the engine into the airframe,” said Buonanno.
Lockheed Martin’s N+2 concept has a tri-jet configuration; one engine is on the top of the aircraft and the other two are located under each wing. Though not physically hidden, these locations are essentially concealed from the sonic boom because of the tailored volume and lift distribution of the plane. Therefore, the disturbance simply blends in.
And while passengers won’t be buying tickets for these aircraft in the next five years, Buonanno estimates the technology will be ready around the 2025 timeframe.
“We calculate that timeframe by gauging the technology readiness levels,” said Buonanno. He explained that one of the pacing items would be the availability of a propulsion system. “Having something that’s efficient at high speeds and quiet is a big technical challenge.”
By choosing Mach 1.7 design, the team has been able to significantly simplify the problem of developing a propulsion system that’s compatible with low emissions and takeoff and landing noise. Although slightly slower than Concorde’s Mach 2 cruise speed, this enables the use of higher bypass ratio engines for lower takeoff noise and would still permit approximately a 50 percent reduction of trip time compared to today’s aircraft.
“Our work with NASA has laid the groundwork for any future activity,” said Buonanno. The tools we’ve put in place really open up future opportunities.””“

thecivilwarparlor:

Photograph Of Unidentified Buffalo Soldier With Two Children

From: Photographs Of Afro-American Soldiers, Yale Collection Of Western Americana

Beyond defending territories against native attacks, the  Buffalo Soldiers were capable explorers. They mapped large portions of the Southwest and helped erect town sites. Although prejudice was rampant in the new land, the soldiers persevered. Often, their bravery was their saving grace as they faced enemies.- NY Times.com

At the outbreak of the Civil War, the government was fighting the Indians in the west. It withdrew most of its men and resources from the Indian wars, to concentrate on ending the rebellion. At the end of the Civil War, 186,000 black soldiers had participated in the war, with 38,000 killed in action. Southerners and eastern populations did not want to see armed Negro soldiers near or in their communities. They were also afraid of the labor market being flooded with a new source of labor. General employment opportunities in these communities was not available to blacks, so many African-Americans took a long hard look at military service which offered shelter, education, steady pay, medical attention and a pension. Some decided it was much better than frequent civilian unemployment. Of course in some quarters, it was thought this is an good way of getting rid of two problems at the same time. -BuffaloSoldier.net

When Congress reorganized the peacetime regular army in the summer of 1866, it had taken the above situation into account. It also recognized the military merits of black soldiers by authorizing two segregated regiments of black cavalry, the Ninth United States Cavalry and the Tenth United States Cavalry and the 24th, 25th , 38th , 39th, 40th and 41st Infantry Regiments.  Orders were given to transfer the troops to the western war arena, where they would join the army’s fight with Native Americans.

http://www.buffalosoldier.net/

Yale Collection of Western Americana, Beinecke Rare Book and Manuscript Library

Laughed so hard I thought I’d split my side.

(via arewehavingpunyet)

I saw this at the Arlington Museum of Art today. Very impressive.

kvetchlandia:

Ansel Adams     Moonrise, Hernandez, New Mexico     1941

If you’re ever being attacked by clowns, go for the juggler.

If you’re ever being attacked by clowns, go for the juggler.