Tag Archive: progenymk7-b3

A pause after the first two launches was required to not only build the final two rockets but also to launch the second Ascension Mk2, which required a pad reconfiguration. The pad was setup again afterwards to support Mk7-B launches and the third rocket was trucked out to the pad to perform its mission, which we hoped would finally see the rocket on a high sub-orbital trajectory with a successful hot staging to avoid losing speed on ascent. While the launch date did not change, the rocket’s new 0.625m SRB was swapped out for a refurbished SRB to test under flight conditions for the first time after making it through two static fires.

The Flight

No delays occurred during pre-launch preparations and everything was looking good for an on-time lift off when a hold was called from the weather desk just 8 seconds prior to T-0. The mountain wave sensors were tripped and due to the high instability of the rocket without its support arms a hold had to be called before they were retracted at T-5s. No gusts were recorded at KSC in the following minutes however and after some more checking on the weather data it was determined to be a false alarm and the countdown was reset to T-2min with a new launch time of 18:00 local. The hold was released 29 minutes after it was called. T-0 arrived without further incident, all four support arms retracted properly and the Boostertron II first stage was successfully ignited to begin the ascent.

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