red admiral
ACCESS: Top Secret
- Joined
- 16 September 2006
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@F119Doctor In the SABRE concept(s) the helium is in a closed loop. It works due to also having the large volume resevoir of LH2 to reject the heat into. Effectively its somewhat allowing you to decouple precooler flow rate and fuel flow rate. Whereas if you use LH2 for both then the fuel consumption rate is very high.