Space image: Burning

May 26, 2011
Image Credit: NASA

(PhysOrg.com) -- Because of the absence of gravity, fuels burning in space behave very differently than they do on Earth. In this image, a 3-millimeter diameter droplet of heptane fuel burns in microgravity, producing soot.

When a bright, uniform backlight is placed behind the droplet and flame and recorded by a video camera, the appears as a dark cloud. Image processing techniques can then quantify the soot concentration at each point in the image. On the , the Flame Extinguishing Experiment examines the combustion of such droplets.

This colorized gray-scale image is a composite of the individual video frames of the backlit fuel droplet. The bright yellow structure in the middle is the path of the droplet, which becomes smaller as it burns. Initial soot structures (in green) tend to form near the liquid fuel. These come together into larger and larger particles which ultimately spiral out of the flame zone in long, twisting streamers.

Explore further: NASA craft set to beam home close-ups of Pluto

add to favorites email to friend print save as pdf

Related Stories

Is it safe to breathe yet?

Apr 26, 2010

Anyone who has ridden behind a truck belching black exhaust knows the smell and discomfort caused by soot, the airborne carbon particles that result from the incomplete combustion of hydrocarbons such as diesel ...

Droplets that Roll Uphill

Sep 24, 2007

A recent experiment conducted by physicists at University of Bristol in the United Kingdom has shown that liquid drops can defy gravity. Droplets of liquid on an inclined plate that is shaken up and down can ...

Cleaner diesels thanks to laser light

Dec 07, 2007

Dutch researcher Bas Bougie has developed a laser system to investigate soot development in diesel engines. Small soot particles are not retained by a soot filter but are, however, more harmful than larger soot particles. ...

NOAA takes first broad look at soot from ships

Jul 09, 2008

Tugboats puff out more soot for the amount of fuel used than other commercial vessels, and large cargo ships emit more than twice as much soot as previously estimated, according to the first extensive study of commercial ...

Recommended for you

NASA craft set to beam home close-ups of Pluto

14 hours ago

Nine years after leaving Earth, the New Horizons spacecraft is at last drawing close to Pluto and on Sunday was expected to start shooting photographs of the dwarf planet.

Elon Musk's SpaceX drops lawsuit against Air Force

Jan 25, 2015

A spacecraft company run by billionaire Elon Musk has dropped a lawsuit alleging the U.S. Air Force improperly awarded a contract to launch military satellites to a joint venture between Boeing and Lockheed ...

NASA spacecraft almost to Pluto: Smile for the camera!

Jan 23, 2015

It's showtime for Pluto. NASA's New Horizons spacecraft has traveled 3 billion miles and is nearing the end of its nine-year journey to Pluto. Sunday, it begins photographing the mysterious, unexplored, icy ...

Gullies on Vesta suggest past water-mobilized flows

Jan 23, 2015

(Phys.org)—Protoplanet Vesta, visited by NASA's Dawn spacecraft from 2011 to 2013, was once thought to be completely dry, incapable of retaining water because of the low temperatures and pressures at its ...

User comments : 0

Please sign in to add a comment. Registration is free, and takes less than a minute. Read more

Click here to reset your password.
Sign in to get notified via email when new comments are made.