Tempo fa vidi su Discovery science un servizio su una Sedia centrifuga che stavano sperimentando alla NASA ,questa sedia ricreava la Gravità e una seduta al giorno era abbastanza per eliminare gli efetti dell'asenza di Gravità,non so ora a che punto sia questo proggetto o se e stato cancellato per mancanza di fondi ,una cosa e certa una sedia del genere sarebbe molto utile.
Alla NASA non lo so ma presumo di si, in Russia la usano sicuramente, è una semplice sedia che viene fatta girare a diverse velocità e accoppiata ad un movimento controrotatorio della testa crea una sorta di disorientamento indotto che abitua gli astronauti nei giorni prima della partenza a quello che proveranno in orbita…
Questo è il racconto di Anousheh Ansari del training:
"The test ( spinning chair ) is supposed to help you with your vestibular system. As you may know, when you fly in zero-G your vestibular system gets all messed up, sort of like when you are on a boat. You can get nauseous and feel miserable. The effects differ by individual. Some people are more susceptible to this problem and some adapt very quickly, but one of the essential things that is packed in our space suit, in a nice easily accessible pocket, is a “barf bag” (sorry I don’t know the technical term for it).
The views on the effectiveness of this test vary. Basically there are two types of exercises, one is spinning in one direction for 10-15 minutes while you move your head from shoulder to shoulder, left and right. In the other test, you spin in one direction for one minute, stop and then spin in the reverse direction. While spinning you have to bend forward at the waist and back. This is also done for 10-15 minutes. You may think this one is easier, but actually it is more difficult. Feel free to try it at home… Have a friend spin you on an office chair and try it. Just make sure you have a barf bag nearby
As you can imagine, this is NOT one of my favorite things, so by singing the song or doing simple math calculations in my head I keep myself from getting sick. I had to do this exercise several times in Star City and almost everyday since we arrived in Baikonur."
E questo è il commento una volta in orbita:
"When the Soyuz is put in orbit to chase the space station, it spins on its axis the whole time. The trip to the station takes close to 48 hours…
Now I knew why we had those dreaded spinning chair trainings. "
JSC2006-E-40376 (14 Sept. 2006) --- Spaceflight Participant Anousheh Ansari participates in a tilt table session performed for zero-gravity conditions in the Cosmonaut Hotel in Baikonur, Kazakhstan, as the Expedition 14 crew members prepare for their launch Sept. 18 on a Soyuz TMA-9 spacecraft to the International Space Station. Photo credit: Victor Zelentsov/NASA