οκ ειναι μυθος,οκ μιλαμε για μηχανες και ολα τα σχετικα,ας δουμε λιγο πιο αναλυτικα ομως:
In 1962, NASA decided to equip the astronauts of its future Gemini programm with a highly accurate, legible, resistant and reliable wrist chronograph.
Donald K. Slayton, head of the flight Crew Operations , took action to select the chronographs :
For the purpose of comparison tests, NASA purchased chronographs different brands from Corrigan's, a large retailer in Houston, Texas the following watches where purchased : Elgin, Benrus, Hamilton, Mido, Piccard, Omega, Bulova, Rolex, Longine and Gruen. Of theses only 3 where selected for the comparative evaluation testing :
Longines, Omega and Rolex
Model tested : probably 105.012 no documents found for the moment to firmly state this , but for sure a Speedmaster equiped with Omega 321 caliber
High temperature: 48 hours at 71 C followed by 30 minutes at 93 C. This under a pressure of 0,35atm and relative humidity not over 15%.
Low temperature: Four hours at -18 C.
Temperature-pressure: 0,000001atm and temperature raised to 71 C. Temperature then lowered to -18 C in 45 minutes and again raised to 71º C in 45 minutes. This cycle was repeated fifteen times.
Relative humidity: 240 hours in relatuve humidity of at least 95% and at temperatures varying between 20º C and 71º C. The steam had a pH value of between 6,5 and 7,5.
Oxygen atmosphere: Exposure to 100% oxygen atmosphere at a pressure of 0,35atm and a temperature of 71 C for 48 hours.
Shock: Six 11 millisecond shocks of 40g each in six different directions.
Acceleration: Linear acceleration from 1g to 7,25g within 333 seconds.
Decompression: 90 minutes in a vaccum of 0 10-6 atm and a temperature of 71 C and 30 minutes in the same vaccum but at a temperature of 93C.
High pressure: Exposure to 1,6atm for one hour.
Vibration: Three cycles of 30 minutes (lateral, horizontal and vertical), the frequency varying from 5 to 2000cps and back to 5cps in 15 minutes. Average acceleration per impulse 8,8g.
Acoustic noise: 130dB over a frequency range from 40 to 10000Hz for 30 minutes
Results of the tests :
Omega Speedmaster : gained 21 minutes during decompression test and lost 15 minutes during the acceleration test , the luminescence of the dial was lost during the test
Rolex Daytona : stopped running on two occasions during the relative humidity test and during the high pressure test when the sweep second hand wraped and press against the other hands
Longine Wittnauer : Crystal warped and disengaged during the high pressure test , same fault occured during the decompression test
Final conclusion : the Omega chronograph performmed satisfactorily
In 1965, NASA chose the Omega Speedmaster Professional as the official chronograph for the space program. ....
συνεχιζεται και αλλαζει χρονικα και με αλλα τεστ που θα αναφερω,το συγκεκριμενο εχει να κανει με το ρολοι που φοραγε το caliber 321 το οποιο εφερε το ρολοι που πατησε στο φεγγαρι και βρισκεται εως το 1967 με αυτη την μηχανη.στα επομενα τεστ που αφορουν την 861
μια φωτο απο ρολοι σε διαστημικη αποστολη τη δεκαετια του 70,το βασικο ειναι οτι λειτουργει
http://img265.imageshack.us/img265/8838/omertwxu1.jpgκαι απο τεστ
http://img411.imageshack.us/img411/1861/omspedmy3.jpg