Back Efecte pogo Catalan Pogo oscilace Czech Pogoeffekt German Pogo-efiko Esperanto Efecto pogo Spanish Effet pogo French תנודת פוגו HE Effetto pogo Italian ロケットエンジン#Pogo振動 Japanese Efeito pogo Portuguese
Pogo oscillation is a self-excited vibration in liquid-propellant rocket engines caused by combustion instability.[1] The unstable combustion results in variations of engine thrust, causing variations of acceleration on the vehicle's flexible structure, which in turn cause variations in propellant pressure and flow rate, closing the self-excitation cycle. The name is a metaphor comparing the longitudinal vibration to the bouncing of a pogo stick. Pogo oscillation places stress on the frame of the vehicle, which in severe cases can be dangerous.[1]
- ^ a b Tom Irvine (October 2008). "Apollo 13 Pogo Oscillation" (PDF-0.96 Mb). Vibrationdata Newsletter. pp. 2–6. Retrieved June 18, 2009.