Ion Dacian [SEP] voice type
Ion Dacian
Ion Dacian (real name Ion Pulcă) (11 October 1911 in Saschiz, Mureş County8 December 1981 in Bucharest) was a Romanian tenor known especially as a light opera singer.
He studied in parallel and graduated both from the Law Faculty and the Music Academy of Cluj. His canto teacher was Ion Crişan. Ion died in December of 1981.
for a Solar Electric Propulsion Flight System .
An example of work on this type of technology is Advanced Electric Propulsion System.
The NASA Solar Technology Application Readiness (NSTAR) ion engine has been used with photovoltaic solar panels, which was tested on the Deep Space 1 mission along with Solar Concentrator Arrays (Launched in 1998 as part of the New Millennium Program) 
SEP has been studied as a technology for a mission to Mars. In particular the high specific impulse of the ion engines could lower overall mass and avoid