Performing Personal Hygiene Rituals Without Gravity

Performing Personal Hygiene Rituals Without Gravity There are many things we take for granted here on Earth that take on a whole new aspect in orbit. On Earth, we expect our food to stay on our plates. Water stays in containers. And, we always have an ample supply of air to breathe. In space, all those activities are a lot more difficult and require careful planning. Thats because of the microgravity environments that astronauts live in on orbit. Astronaut Ed Lu uses chopsticks to hold his food and a drink packet to keep fluids from escaping before he drinks them.   NASA The Complexity of Life in Space All human missions have to deal not only with feeding and housing astronauts, but taking care of their other bodily needs. In particular, for long-duration missions, the management of ordinary daily habits becomes even more important since these activities require sanitary conditions to operate in the weightlessness of space. Space agency folks around the world spend a lot of time designing such systems. Taking a Shower There used to be no way to take a shower on an orbital craft, so astronauts had to make do with sponge baths until they returned home. They washed with wet washcloths and utilized  soaps that do not require rinsing. Keeping clean in space is as important as it is at home, and even doubly so since astronauts at times spend long hours in space suits wearing diapers so they can stay outside and get their work done.   Astronaut Karen Nygard shows how an astronaut can do a shampoo in space. NASA Things have changed and nowadays, there are shower units on the International Space Station. Astronauts jump into a round, curtained chamber to shower. When theyre done, the machine suctions up all the water droplets from their shower.  To provide a little privacy, they extend the curtain of the WCS (Waste Collection System), the toilet or bathroom. These same systems may well be used on the Moon or an asteroid or Mars when humans get around to visiting those places in the near future.   Brushing Teeth Its not only possible to brush your teeth in space, but its also essential since the nearest dentist is a few hundred miles away if somebody gets a cavity. But, tooth brushing presented a unique problem for astronauts during early space travel. Its a messy operation- they cant really just spit in space and expect the environment to stay tidy. So, a dental consultant with NASAs Johnson Space Center in Houston developed a toothpaste, now marketed commercially as NASADent, that can be swallowed. Foamless and ingestible, it has been a major breakthrough for the elderly, hospital patients, and others who have trouble brushing their teeth.   Astronauts who can not bring themselves to swallow the toothpaste, or who have brought their own favorite brands, sometimes spit into a washcloth. Using the Toilet One of the most-asked questions that NASA receives is about bathroom rituals. Every astronaut gets asked the question, How do you go to the bathroom in space? The answer is, very carefully. Since there is no gravity to either hold a toilet bowl full of water in place or pull human wastes down, designing a toilet for zero-gravity was no easy task. NASA had to use air flow to direct urine and feces.   The toilets on the International Space Station  are designed to look and feel as similar to those on Earth as possible. However, there are some important differences. Astronauts must use straps to hold their feet against the floor and pivoting bars swing across the thighs, ensuring the user remains seated. Since the system operates on a vacuum, a tight seal is essential. Beside the main toilet bowl, there is a hose, which is utilized as a urinal by men and women. It can be used in a standing position or can be attached to the commode by a pivoting mounting bracket for use in a sitting position. A separate receptacle allows for disposal of wipes. All units use flowing air instead of water to move waste through the system. The human waste is separated and solid wastes are compressed, exposed to vacuum, and stored for later removal. Wastewater is vented to space, although future systems may recycle it. The air is filtered to remove odor and bacteria and then returned to the station. This is the toilet device used onboard the Russian Soyuz craft.   Maksym Kozlenko, CC BY-SA-4.0 Future waste-removal systems on long-term missions may involve recycling for onboard hydroponics and gardens systems or other recycling requirements. Space bathrooms have come a long way from the early days when astronauts had pretty crude methods to handle the situation. Fast Facts Personal hygiene tasks in space are a lot more complex than here on Earth. The low-gravity environment requires more care.Shower systems have been installed on space stations, but they require very careful attention to make sure water does not stray into the crew compartments and electronics.Toilet facilities use suction and other devices to direct materials for safe storage and away from the walls and electronics. Edited and updated by  Carolyn Collins Petersen.

Benjamin O. Davis - Tuskegee Airmen - World War II

Benjamin O. Davis - Tuskegee Airmen - World War II Benjamin O. Davis, Jr. (born December 18,  1912  at Washington, DC)  earned fame as the leader of the Tuskegee Airmen during World War II. He had a decorated thirty-eight-year career before he retired from active duty. He died on July 4, 2002, and was buried at Arlington National Cemetery with much distinction. Early Years Benjamin O. Davis, Jr. was the son of Benjamin O. Davis, Sr. and his wife Elnora.  A career US Army officer, the elder Davis later became the services first African-American general in 1941. Losing his mother at age four, the younger Davis was raised on various military posts and watched as his fathers career was hampered by the US Armys segregationist policies. In 1926, Davis had his first experience with aviation when he was able to fly with a pilot from Bolling Field. After briefly attending the University of Chicago, he elected to pursue a military career with the hope of learning to fly. Seeking admission to West Point, Davis received an appointment from Congressmen Oscar DePriest, the only African-American member of the House of Representatives, in 1932. West Point Though Davis hoped that his classmates would judge him on his character and performance rather than his race, he was quickly shunned by the other cadets. In an effort to force him from the academy, the cadets subjected him to the silent treatment. Living and dining alone, Davis endured and graduated in 1936. Only the academys fourth African-American graduate, he ranked 35th in a class of 278. Though Davis had applied for admission to the Army Air Corps and possessed the requisite qualifications, he was denied as there were no all-black aviation units. As a result, he was posted to the all-black 24th Infantry Regiment. Based at Fort Benning, he commanded a service company until attending the Infantry School. Completing the course, he received orders to move to Tuskegee Institute as a Reserve Officers Training Corps instructor. Learning to Fly As Tuskegee was a traditionally African-American college, the position allowed the US Army to assign Davis somewhere where he could not command white troops. In 1941, with World War II raging overseas, President Franklin Roosevelt and Congress directed the War Department to form an all-black flying unit within the Army Air Corps. Admitted to the first training class at nearby Tuskegee Army Air Field, Davis became the first African-American pilot to solo in an Army Air Corps aircraft. Winning his wings on March 7, 1942, he was one of the first five African-American officers to graduate from the program. He would be followed by nearly 1,000 more Tuskegee Airmen. 99th Pursuit Squadron Having been promoted to lieutenant colonel in May, Davis was given command of the first all-black combat unit, the 99th Pursuit Squadron. Working up through the fall of 1942, the 99th was originally scheduled to provide air defense over Liberia but later was directed to the Mediterranean to support the campaign in North Africa. Equipped with Curtiss P-40 Warhawks, Davis command began operating from Tunis, Tunisia in June 1943 as part of the 33rd Fighter Group. Arriving, their operations were hampered by segregationist and racist actions on the part of 33rds commander, Colonel William Momyer. Ordered to a ground attack role, Davis led his squadron on its first combat mission on June 2. This saw the 99th attack the island of Pantelleria in preparation for the invasion of Sicily. Leading the 99th through the summer, Davis men performed well, though Momyer reported otherwise to the War Department and stated that African-American pilots were inferior. As the US Army Air Forces were assessing the creation of additional all-black units, US Army Chief of Staff General George C. Marshall ordered the issue studied. As a result, Davis received orders to return to Washington in September to testify before the Advisory Committee on Negro Troop Policies. Delivering impassioned testimony, he successfully defended the 99ths combat record and paved the way for the formation of new units. Given command of the new 332nd Fighter Group, Davis prepared the unit for service overseas. 332nd Fighter Group Consisting of four all-black squadrons, including the 99th, Davis new unit began operating from Ramitelli, Italy in late spring 1944. Consistent with his new command, Davis was promoted to colonel on May 29. Initially equipped with Bell P-39 Airacobras, the 332nd transitioned to the Republic P-47 Thunderbolt in June. Leading from the front, Davis personally led the 332nd on several occasions including during an escort mission which saw Consolidated B-24 Liberators strike Munich. Switching to the North American P-51 Mustang in July, the 332nd began to earn a reputation as one of the best fighter units in the theater. Known as the Red Tails due to the distinctive markings on their aircraft, Davis men compiled an impressive record through the end of the war in Europe and excelled as bomber escorts. During his time in Europe, Davis flew sixty combat missions and won the Silver Star and Distinguished Flying Cross. Postwar On July 1, 1945, Davis received orders to take command of the 477th Composite Group. Consisting of the 99th Fighter Squadron and the all-black 617th and 618th Bombardment Squadrons, Davis was tasked with preparing the group for combat. Beginning work, the war ended before the unit was ready to deploy. Remaining with the unit after the war, Davis shifted to the newly formed US Air Force in 1947. Following President Harry S. Trumans executive order, which desegregated the US military in 1948, Davis aided in integrating the US Air Force. The next summer, he attended the Air War College becoming the first African-American to graduate from an American war college. After completing his studies in 1950, he served as chief of the Air Defense Branch of Air Force operations. In 1953, with the Korean War raging, Davis received command of the 51st Fighter-Interceptor Wing. Based in Suwon, South Korea, he flew the North American F-86 Sabre. In 1954, he shifted to Japan for service with the Thirteenth Air Force (13 AF). Promoted to brigadier general that October, Davis became vice commander of 13 AF the following year. In this role, he aided in rebuilding the Nationalist Chinese air force on Taiwan. Ordered to Europe in 1957, Davis became chief of staff for the Twelfth Air Force at Ramstein Air Base in Germany. That December, he began service as chief of staff for operations, Headquarters US Air Forces in Europe. Promoted to major general in 1959, Davis returned home in 1961 and assumed the office of Director of Manpower and Organization. In April 1965, after several years of Pentagon service, Davis was promoted to lieutenant general and assigned as chief of staff for the United Nations Command and US Forces in Korea. Two years later, he moved south to take command of the Thirteenth Air Force, which was then based in the Philippines. Remaining there for twelve months, Davis became deputy commander in chief, US Strike Command in August 1968, and also served as commander-in-chief, Middle-East, Southern Asia, and Africa. On February 1, 1970, Davis ended his thirty-eight-year career and retired from active duty. Later Life Accepting a position with the US Department of Transportation, Davis became Assistant Secretary of Transportation for Environment, Safety, and Consumer Affairs in 1971. Serving for four years, he retired in 1975. In 1998, President Bill Clinton promoted Davis to general in recognition of his achievements. Suffering from Alzheimers disease, Davis died at Walter Reed Army Medical Center on July 4, 2002. Thirteen days later, he was buried at Arlington National Cemetery as a red-tailed P-51 Mustang flew overhead. Selected Sources US Air Force: General Benjamin O. Davis, Jr.Aviation History: Benjamin DavisNational Park Service: Benjamin O. Davis