A report from Ares I-X’s Chief Engineer has called for the strengthening of the vehicle’s hardware, due to the red risks associated with Thrust Oscillation near the end of first stage burn – which is also threatening the vehicle’s Flight Termination System (FTS) components.
The vehicle is also requiring mitigation of other multiple issues and concerns – found during the vehicle’s Critical Design Review (CDR) Phase II meeting, though launch remains on track for the Spring of 2009.