One Orbit! – Hux I-c2

A few modifications were made to the Hux I-c launch vehicle and a second attempt at making orbit has been conducted. It could be called a partial success, but I’ll get to that.

Hux I-c2 first stage separationThe second stage TWR was improved by swapping out the gimballing LV-T45 for the slightly more powerful but lighter and non-gimballing LV-T30 engine. An extra set of four winglets were added to the vehicle for aerodynamic control now that the engine was static and the Advanced S.A.S module in this stage was also replaced in favour of the lighter S.A.S module. To improve acceleration during the launch the staging was adjusted so that the LV-T30 engine would fire as soon as the first stage solid fuel engine was jettisoned.

A MechJeb module to provide telemetry and one SP-A Photovoltaic Panel for in orbit (a bit hopeful?) power generation were added to the probe. These added slightly to the probes mass, however the changes made to the launch vehicle resulted in an overall reduction in mass of the rocket to 14.95 tons and a slight improvement in the TWR to 1.71.

Hux I-c2 probeThanks to the Hux Relay Station contact with the third stage was retained in order to perform the first orbit insertion burn at the apoapsis however there was not enough delta-v to raise the periapsis fully out of Kerbin’s atmosphere. Although the probe was carrying a small amount of fuel which may have at least extended the orbit slightly, there would be no contact with mission control to enable a second burn to be carried out.

Hux I-c2 probe re-entryThe probe did however make it all the way around Kerbin with an eventual re-entry and splashdown just to the east of the relay station.

More modifications of the launch vehicle are going to need to be made in order to get enough delta-v for the probe to reach a stable orbit. A couple of ideas are being worked on in the hope that the next mission will be a success.

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