[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

*To*: "Beanstalkr@aol.com" <Beanstalkr@aol.com>, "starship-design@lists.uoregon.edu" <starship-design@lists.uoregon.edu>*Subject*: starship-design: stale mail*From*: Ben Franchuk <bfranchuk@jetnet.ab.ca>*Date*: Thu, 14 Sep 2000 06:05:40 +0000*Reply-To*: Ben Franchuk <bfranchuk@jetnet.ab.ca>*Sender*: owner-starship-design@lists.uoregon.edu

Your mail to: "Michael K. Heney" <mheney@mach-25.com> with subject: Re: Virtual Beanstalk -- Numbers, numbers, who's got the numbers? sent on: Sun, 08 Aug 1999 21:42:13 -0600 is being returned to you. It sat unread in the mailbox beyond NetZero's 6 month limit. Undelivered Ideas > > Sorry for saying you were negative. I know you were just trying to > > put a practical spin on my $10 orbital goal and that you want cheap > > access to space as much as I do. Here are some round about numbers for my view on the lowest cost. http://www.rotaryrocket.com/tec/rotonv.html Rotory rocket. Mass fully loaded 180,000 kg Pay load 3,200 kg cost per playload $2,200 kg fuel/payload 56:1 http://solar.rtd.utk.edu/%7Emwade/props/loxosene.htm lox/Kerosene ratio 2.5 40 kg lox 16 kg fuel for each kq of payload. cost 1980 lox kg $ .08 fuel kg $ .20 assuming 3 x increase for 2010 then ( my guess ) lox .24 fuel .60 lox $9.60 fuel $9.60 rounding up $19.20 per kg of payload fuel costs. tricky part assume a running cost 30% of the fuel Mininum cost $ 25 per kg $12.5 per lbm RLV Current cost $2,200 per kg Mature cost ( guess ) $ 50 per kg $25.00 per lbm So here are my numbers. I can see why NASA and the military have never developed RLV's look how much you can rip off the tax payer.

- Prev by Date:
**starship-design: Re: book review** - Next by Date:
**starship-design: The URANOS Club Newsletter No. 5** - Prev by thread:
**starship-design: Re: book review** - Next by thread:
**Re: starship-design: stale mail** - Index(es):