[AR] Re: Faster Space Transport? (was Re: Zubrin,
- From: Robert Steinke <robert.steinke@xxxxxxxxx>
- To: arocket@xxxxxxxxxxxxx
- Date: Fri, 23 Aug 2019 07:56:46 -0700
The cost of launching propellant to a depot on a smaller rocket with a
higher flight rate is not necessarily the same as the cost of launching an
already fueled upper stage on a larger rocket with a lower flight rate.
Your analysis implicitly assumes they are equal.
On Fri, Aug 23, 2019 at 6:06 AM William Claybaugh <wclaybaugh2@xxxxxxxxx>
wrote:
Henry:
Propellant at a propellant depot costs the price of that propellant on the
ground plus the cost of launching it to LEO plus the pro-rata amortization
of the cost of the depot plus the pro-rata depreciation of the depot plus
the cost of losses.
Propellant in an upper stage costs the price of propellant on the ground
plus the cost of launching it to LEO.
Depots are not getting any traction because the key players—who are at OMB
and the Space Council—know these facts.
Bill
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