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In Flight Gelling of Methane propelled CBC’s with Cross feed to a LH2 core stage Utilizing a core stage ring atomizer

November 2, 2015

In Flight Gelling of Methane propelled CBC’s with Cross feed to a LH2 core stage Utilizing a core stage ring atomizer

(A)(1) Methane propellent in CBC’s possibly Methane/LH2 gel with a high mass fraction of Methane.

(A)(2) CBC Methane propellant tank high up on the vehicle , gravity feeds Methane  to core stage LH2 tank that is placed at bottom of core stage.Would this cause mass shifting and balance issues in flight?

(A)(3) Methane ring atomizer at bottom of LH2 tank diffuses Methane into ice crystals and burns in a dual fuel engine until CBC separation.

(A)(4) EELV heavy stands to gain the most from this concept as does a future SLS with Methane powered CBC’s.Imagine Vulcan with both Blue Origin Methane and LH2 core stage engines.A SpaceX commercial or Mars launch vehicle could benefit from a Methane core stage with Falcon 9 kerosene CBC’s? This concept would not be able to utilize cross feed however.

dual fueled SSME 1978 study

Methane Gelled in LH2

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