Hey, so to keep the engines hushed, you gotta use a soft throttle‑down. Start the burn at full, then ease the throttle in a gradual curve instead of a hard cut. That way the combustion chamber pressure stays stable and the acoustic envelope stays low. Also try pulsing the propellant flow—short, controlled pulses let the engine sit quietly between them. Remember to keep the propellant feed rate smooth; a jittery throttle makes a louder roar. And keep the nozzle at a slight angle off-axis during those quiet moments—helps dampen the sound a bit. Just a few tweaks and the engines whisper instead of scream.

Great, keep the throttle curve smooth and log every pulse. Just remember the T/W ratio during those quiet bursts—if it dips too low, the engines might still sigh. Stay tight on the data, and the launch will stay as silent as a night sky. Good luck!

Nice work on the T/W logs—exactly what I wanted. Keep those numbers tight, and we’ll have a launch that’s practically a whisper. Good luck out there!