Responsive Access Small Cargo Affordable Launch (RASCAL ...

(spreads the DDT&E over the life of the program). It was also decided that different
scenarios would be looked at and the number of flights necessary to reach the RASCAL
cost goals would be calculated. The cases are described below:
Case 1: Only the upper stages are purchased every flight. The production of the
first stage as well as the DDT&E are paid for by some other agency
(NASA, USAF, etc.).
Case 2: The upper stages are purchased for every flight as well as the necessary
first stages. The DDT&R is paid for by some other agency (NASA,
USAF, etc.).
Case 3: The total cost for the program is paid for by RASCAL. This includes the
entire vehicle as well as all DDT&E and facilities
Each of the cases was then calculated for the baseline and evaluated against each of the
RASCAL cost goals
Cost per Flight (Millions)
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9
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7
6
5
4
3
2
1
0
0 50 100 150 200 250 300
Number of Flights per Year
Figure 26: Baseline Cost per Flight.
Baseline Case 1
Baseline Case 2
Baseline Case 3
As the above figure shows only Case 1 reaches the desired goals in less than 250 flights
per year (155 flights). Case 2 takes 336 flights per year where Case 3 takes 660 flights
per year to reach the RASCAL goal of $750,000 per flight. The somewhat saw-tooth
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