| |
Researched How Things Fly by Wright Brothers
The first step in any new program or project is
research. The Wright Brothers first performed a literature search
to find out the state of aeronautical knowledge at their time. They
read about the works of Cayley, and Langley, and the hang-gliding
flights of Otto Lilienthal. They corresponded with Octave Chanute
concerning some of their ideas. They recognized that control of the flying aircraft would be the most crucial and hardest problem
to solve.The Wright Brothers spent a great deal of time
observing birds in flight. They noticed that birds soared into the
wind and that the air flowing over the curved surface of their wings
created lift. Birds change the shape of their wings to turn and
maneuver. The Wrights believed that they could use this technique
to obtain roll
control by warping,
or changing the shape, of a portion of the wing. Today, NASA engineers are involved in all aspects
of research. Engineers use the Internet, read books, attend
conferences, and use videoconferencing technologies to solve new
problems of flight. You can share in this research at NASA Quest, which is hosted by the NASA Ames Research Center.
Researched How Things Fly by Wright Brothers
posted by Joseph Letzelter at 01:17 pm
Permalink
|
| |
Final Shuttle Mission to Hubble Space Telescope
Image above: From the left are astronauts Michael J. Massimino, Michael T. Good, both mission specialists; Gregory C. Johnson, pilot; Scott D. Altman, commander; K. Megan McArthur, John M. Grunsfeld and Andrew J. Feustel, all mission specialists. Image credit: NASA
Veteran astronaut Scott D. Altman will command the final space shuttle mission to Hubble. Retired Navy Capt. Gregory C. Johnson will serve as pilot. Mission specialists include veteran spacewalkers John M. Grunsfeld and Michael J. Massimino and first-time space fliers Andrew J. Feustel, Michael T. Good and K. Megan McArthur.
Altman, a native of Pekin, Ill., will be making his fourth space flight and his second trip to Hubble. He commanded the STS-109 Hubble servicing mission in 2002. He served as pilot of STS-90 in 1998 and STS-106 in 2000. Johnson, a Seattle native and former Navy test pilot and NASA research pilot, was selected as an astronaut in 1998. He will be making his first space flight.
Chicago native Grunsfeld, an astronomer, will be making his third trip to Hubble and his fifth space flight. He performed a total of five spacewalks to service the telescope on STS-103 in 1999 and STS-109 in 2002. He also flew on STS-67 in 1995 and STS-81 in 1997. Massimino, from Franklin Square, N.Y., will be making his second trip to Hubble and his second space flight. He performed two spacewalks to service the telescope during the STS-109 mission in 2002.
Feustel, Good, and McArthur were each selected as astronauts in 2000. Feustel, a native of Lake Orion, Mich., was an exploration geophysicist in the petroleum industry at the time of his selection by NASA. Good is from Broadview Heights, Ohio, and is an Air Force colonel, weapons systems officer and graduate of the Air Force Test Pilot School, having logged more than 2,100 hours in 30 different types of aircraft. McArthur, born in Honolulu, Hawaii, considers California her home state. She has a doctorate in oceanography from the Scripps Institution of Oceanography, University of California-San Diego.
source: nasa.gov
Final Shuttle Mission to Hubble Space Telescope
posted by Joseph Letzelter at 12:34 am
Permalink
|
| |
Clothing that Protect UV rays
Clothing that covers your skin protects against the sun's UV rays.
Loose-fitting long-sleeved shirts and long pants made from tightly
woven fabric offer the best protection. A wet T-shirt offers you much
less UV protection than does a dry one.
If wearing this type of clothing isn't practical, at least try to
wear a t-shirt or a beach cover-up. Keep in mind, however, that a
typical t-shirt actually has an SPF rating substantially lower than the
recommended SPF 15, so double-up on protection by using sunscreen with
at least SPF 15 (and UVA and UVB protection) and staying in the shade
when you can. 
Clothing that Protect UV rays
posted by Joseph Letzelter at 01:27 am
Permalink
|
|
|
