[AR] Re: 500,000 tons per year to GEO (off topic)

  • From: marsbeyond@xxxxxxxxx
  • To: "arocket@xxxxxxxxxxxxx" <arocket@xxxxxxxxxxxxx>
  • Date: Wed, 2 Apr 2014 15:37:23 -0700

www.popularmechanics.com/_.../elon-m...
Feb 7, 2012 - SpaceX is hard at work trying to design rocket parts that can fly 
themselves back to the ... For Falcon Heavy, that would mean a price per pound 
to orbit of less than $500.

There are many links to this 

http://guardianlv.com/2013/08/elon-musk-is-having-a-great-week-spacex-takes-another-solid-step/

He's also stated that MCT will drop prices below "two orders of magnitude" just 
google it

Sent from my iPhone

On Apr 2, 2014, at 2:31 PM, Bill Claybaugh <wclaybaugh2@xxxxxxxxxx> wrote:

> If you are going to make ridiculous assertions, please provide the math to 
> prove them.  Even SpaceX says rocket back will not get below $1000 per pound, 
> and that takes hundreds of launches per reusable stage.
> 
> If you are not going to provide proof of your silly claims, please stop 
> making them.
> 
> Bill
> 
> Sent from my iPhone
> 
> On Apr 2, 2014, at 14:00, marsbeyond@xxxxxxxxx wrote:
> 
>> It uses only 30% of PAYLOAD. Listen to Gwynne Shotwell's most recent 
>> interview on "The Space Show" very carefully. For what purpose would you 
>> ever fly it up range? Just land on a barge or land downrange. Actually $80 
>> per pound is doable.
>> 
>> Sent from my iPhone
>> 
>> On Apr 2, 2014, at 12:53 PM, Bill Claybaugh <wclaybaugh2@xxxxxxxxxx> wrote:
>> 
>>> Please.
>>> 
>>> Landing the first stage downrange uses 15% of the payload; flying it back 
>>> up range cost 30% of payload.  Even if refurbishing and relaunch were free, 
>>> propulsive fly back will take four launches just to cost the same as 
>>> expending. Since they are not free, it is more likely to take something 
>>> between 12-24 launches for this system to cost exactly the same as the 
>>> expendable version.
>>> 
>>> This also means that production rates will drop and so those cost will go 
>>> up.
>>> 
>>> And then there's the customers who want to know why they should fly on a 
>>> used rocket....
>>> 
>>> $100 per pound is not achievable with this system.
>>> 
>>> Bill   
>>> 
>>> Sent from my iPhone
>>> 
>>> On Apr 2, 2014, at 10:49, marsbeyond@xxxxxxxxx wrote:
>>> 
>>>> Kieth,
>>>> 
>>>> When is Skylon supposed to fly? In less than two years, SpaceX will be 
>>>> using propulsive recovery to re-use the first stage, second stage, and 
>>>> capsule, and their cost to LEO will drop to $100 a pound!
>>>> 
>>>> Sent from my iPhone
>>>> 
>>>> On Apr 2, 2014, at 9:27 AM, Keith Henson <hkeithhenson@xxxxxxxxx> wrote:
>>>> 
>>>>> http://theenergycollective.com/keith-henson/362181/dollar-gallon-gasoline
>>>>> 
>>>>> $350 million committed so far to the Skylon engines.
>>>>> 
>>>>> Keith
>

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