Which liquid rocket, utilizing a Jet-A/Liquid Oxygen blow-down system, recorded the highest amateur apogee?
Answer
Deneb
The *Deneb* vehicle, developed by Embry-Riddle Prescott, holds the record for the highest apogee achieved by an amateur liquid-fueled rocket. This flight, which occurred in April 2023, peaked at 47,732 feet, which translates to approximately 14.5 kilometers. This figure highlights the significant performance gap between current amateur liquid propulsion systems and solid motors concerning raw altitude achievement. While liquid rockets are valued for complexity and precision, they have not yet managed to breach the Kármán line in amateur competition.
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