SSPLAXExample
Marginal unlock
eVTOL Fleet Ramp
Ramping an eVTOL program toward certification deliveries. Battery packs have long lead times, test cells are heavily loaded, and pilot checkout slots are fixed each month.
Decision logic
Measure the value of one more unit of scarce capacity before spending on the wrong lever.
Decision question
Where does one more unit of capacity create the most program value right now?
Model output
Best marginal move+1 test slot
Current output13 aircraft/month
Value of that move~$950k/month
Active limits
- Test cells full
- Battery supply 92% used
Key insight
One extra test slot changes output immediately, while extra budget alone does nothing until that slot exists.
Before: 13 aircraft/month, test cells at 100%, $0 value from extra budget.
After (+1 slot): output rises and test cells stop being the constraint.
Battery supply becomes the next ceiling once test cells open up.