The ten ton structure price is the cost of a spacecraft with an empty mass of ten tons ( ten thousand kilograms ). With a typical mass ratio of eight to one, this corresponds to a gross liftoff mass, including fuel of about eighty tons.

The empty mass of the craft is is proportional to the initial mass of the craft and inversely proportional to the empty mass ratio of the craft. The cutting corners price is for a craft made up of off the shelf or even salvaged parts. The gold plated price is for a craft made up by a committee of managers who have golden parachutes are about to leave the company before the cost overruns damage their reputation, as in the case of the Venture Star.

In rocket cost ten ton structure price is used along with empty mass, exhaust velocity, structure exhaust scale, structure mass scale, structure tensile scale and tensile energy to calculate the structure cost.

structure cost = ten ton structure price * pow( ( empty mass / 10,000 ), structure mass scale ) * pow( ( tensile energy / 205,000 ), structure tensile scale ) * pow( ( exhaust velocity / 3,330 ), structure exhaust scale )
 

In spacecraft cost ten ton structure price is used along with the empty mass, exhaust velocity, structure exhaust scale, structure mass scale and structure price multiplier to calculate the initial structure cost.

initial structure = structure price multiplier * ten ton structure price * pow( ( empty mass / 10,000 ), structure mass scale ) * pow( ( exhaust velocity / 3,330 ), structure exhaust scale )
 
 

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