conferenza post-schianto il 24/6 alle 3.00 di notte in Italia (sarà quindi il 25).. se qualcuno di noi fosse insonne e/o non lavora il giorno dopo, potrebbe essere interessante…
Stavo giusto guardando il tweet. In realtà da noi sarà alle 3 del 24 giugno, che il Giappone è a Est. Ci sono arrivata solo perché ho letto anche il re-tweet di Marcia Smith che dà l’orario in EDT.
Io mi sa che la guardo con calma in differita.
C’è stata una conferenza stampa di ispace per spiegare le cause del fallimento.
Articolo da Space News:
Japanese company ispace says it believes its second lunar lander mission crashed because of problems with a laser rangefinder used to determine altitude during its descent. […] The laser rangefinder was designed to provide altitude data when the spacecraft was at least three kilometers above the surface, triggering engines for the final landing burn. However, the unit did not provide its first altitude measurement until it was less than 900 meters high. The lander then attempted rapid deceleration, but by that point it was traveling much faster than planned: 66 meters per second versus the 44 meters per second planned. The last telemetry received from the lander, at an altitude of 192 meters, showed it was still descending at 42 meters per second.
Le cause della cattiva performance restano ignote.
Several factors could cause that degradation, including lunar surface conditions that reduced the amount of laser light reflected back to the lander, lower power of the laser, reduced performance at higher velocities or effects from the space environment, such as vacuum or radiation.
“We are currently unable to further narrow them down,” he said through an interpreter of those potential causes, “or whether the anomaly was due to a single factor or a combination of multiple factors.”