Thrust Oscillation options outlined for Ares I PDR
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Ares I engineers have created a "Plan A" option - which combines three mitigation techniques - to attempt to solve Thrust Oscillation issues during first stage flight.
Plan A involves an active Tuned Mass Absorber (TMA) to the aft skirt, dampers on the interstage, and the crew seat isolators - though during a teleconference to the media, Constellation managers claimed crew seats is a fluid option, referencing only an active TMA system and Interstage dampers as the current forward plan.
Now on L2
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