Author Topic: Comparative cost of launching payloads into space on different launch systems  (Read 3087 times)

Offline Guardian700

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There is a typo in the first chart (table 4). It is $2684 per kg, not $2864 per kg for the Falcon 9. According to @LouScheffer.

Quote from: LouScheffer
It's even better than it looks - there's a typo in the table.   The SpaceX entry should be 2684 $/kg, not 2864.

This is immediately clear when you ask how Proton can be comparable.  They payload is 23,000 vs 22,800, or about 1% more.  But the cost is more than 1% higher.  So at least one of the numbers must be wrong, and it's SpaceX.
http://forum.nasaspaceflight.com/index.php?topic=42617.msg1714471#msg1714471

Before I change, who is LouScheffer? And why does he think so?

Online LouScheffer

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There is a typo in the first chart (table 4). It is $2684 per kg, not $2864 per kg for the Falcon 9. According to @LouScheffer.

Quote from: LouScheffer
It's even better than it looks - there's a typo in the table.   The SpaceX entry should be 2684 $/kg, not 2864.

This is immediately clear when you ask how Proton can be comparable.  They payload is 23,000 vs 22,800, or about 1% more.  But the cost is more than 1% higher.  So at least one of the numbers must be wrong, and it's SpaceX.
http://forum.nasaspaceflight.com/index.php?topic=42617.msg1714471#msg1714471

Before I change, who is LouScheffer? And why does he think so?

No need for reputation here.  The table itself has all the data.  The cost is 61.2 million.  The payload is 22,800 kg.   That gives a cost of $2684/kg.   But the cost per kg entry, on the same line, says $2864.   Seems pretty clear this is just a typo, since your calculator can show you that $2684 is the correct value.

Offline Guardian700

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No need for reputation here.  The table itself has all the data.  The cost is 61.2 million.  The payload is 22,800 kg.   That gives a cost of $2684/kg.   But the cost per kg entry, on the same line, says $2864.   Seems pretty clear this is just a typo, since your calculator can show you that $2684 is the correct value.

You're right, thanks - changed

Offline john smith 19

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There's a US government report online from last summer that has two charts with prices for commercially available rockets. The first chart is on page 22, the second chart is on page 30.

http://www.gao.gov/assets/690/686613.pdf
The actual physical pages are 27 and 35 respectively.

It's quite a range of $/Kg of mass, with over a decade in range. 
"Solids are a branch of fireworks, not rocketry. :-) :-) ", Henry Spencer 1/28/11  Averse to bold? You must be in marketing."It's all in the sequencing" K. Mattingly.  STS-Keeping most of the stakeholders happy most of the time.

Offline Guardian700

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The actual physical pages are 27 and 35 respectively.

It's quite a range of $/Kg of mass, with over a decade in range.

Better than nothing

Offline john smith 19

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"Solids are a branch of fireworks, not rocketry. :-) :-) ", Henry Spencer 1/28/11  Averse to bold? You must be in marketing."It's all in the sequencing" K. Mattingly.  STS-Keeping most of the stakeholders happy most of the time.

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