[AR] Re: Electric driven Turbo Pumps
- From: Henry Spencer <hspencer@xxxxxxxxxxxxx>
- To: Arocket List <arocket@xxxxxxxxxxxxx>
- Date: Thu, 15 Dec 2016 15:20:30 -0500 (EST)
On Thu, 15 Dec 2016, Brian Feeney wrote:
Would a piston pump reduce or eliminate the problem of cavitation one can
get with a turbine?
Piston pumps definitely can cavitate during refill. Whether they are less
prone to it than centrifugal pumps is harder to answer -- for some types
I'd expect the answer is yes, but a careful analysis would be needed to be
sure of that.
If yes, this would lead to lower tank pressure, lighter weight tanks -
buys back some of the weight increase of the piston vs turbopump??
At least some, yes. Tanks are big, and reducing their mass can help dry
mass considerably (although it also makes the vehicle more fragile, which
matters to reusables in particular).
Henry
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