Quote:
Originally Posted by IvanK
Sternjaeger what would be your opinion on how much of a push or reduction in G would be required in an early Merlin to cause it to cough ?
At present a smooth (like doing your best IF technique) lowering of the nose to say 10 degrees nose down for a descent causes the engine to cough.
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IvanK it's no guesswork, you need a G-meter to determine it properly. A sustained 0G or a minimum negative G load (-0.1) are enough to interrupt the flow. Despite what our scientist friends here say, the mixture gets to the cylinder inlet almost instantaneously. As you know it's not like cylinders burn mixture all at the same time, so one cylinder not receiving enough mixture for a full detonation is enough for a cutout sometimes. Again, please guys provide me with a video and I will be able to tell you (in my humble opinion) if the effect is overmodelled or not.