Editing Delta II (section)

=== Delta-K second stage ===
The second stage of Delta II was the [[Delta-K]], powered by a restartable (up to six restarts) [[Aerojet]] [[AJ10]]-118K engine burning [[hypergolic]] [[Aerozine-50]] and {{N2O4|link=https://en.wikipedia.org/wiki/Dinitrogen_tetroxide}}. These propellants are highly toxic and corrosive, and once loaded the launch had to occur within approximately 37 days or the stage would have to be refurbished or replaced.<ref>{{cite web |url=http://dawn.jpl.nasa.gov/mission/journal_7_15_07.asp |title=DAWN Journal |access-date=2008-09-06 |author=Dr. Marc D. Rayman |date=2007-07-15 |publisher=JPL NASA |archive-url=https://web.archive.org/web/20081012160553/http://dawn.jpl.nasa.gov/mission/journal_7_15_07.asp |archive-date=2008-10-12 |url-status=live}} {{PD-notice}}</ref> This stage also contained a combined [[inertial platform]] and [[guidance system]] that controlled all flight events.<ref name="data sheet"/>

The Delta-K consisted of stainless steel tanks and a lightweight aluminum structure. The tanks were pressurized with helium gas, and the stage featured nitrogen thrusters for roll control during burns and for complete attitude control during coasts. The stage had a mass of {{cvt|950|kg}} when empty, and {{cvt|6954|kg}} when fully fueled.<ref name ="Guide"/>