Appliances, HVAC & White Goods Manufacturing worked example

Production Ramp Capacity Calculator at 56% expected ramp uptime: a worked example

This worked example runs the production ramp capacity calculator numbers for a tougher week than the baseline: 56% expected ramp uptime instead of the typical 78%. Estimate good-unit production ramp capacity from units per ramp cycle, planned cycles, ramp uptime, and launch yield.

The inputs for this scenario

  • Units completed per ramp cycle: 1 units/cycle (held at the documented default)
  • Planned ramp production cycles: 1,350 cycles (held at the documented default)
  • Expected ramp uptime: 56 % (the input this scenario stresses; the baseline uses 78)
  • Expected launch yield: 91 % (held at the documented default)

Working through the calculation

  • The calculation starts from the formula this tool documents: Gross ramp unit capacity = units completed per ramp cycle × planned ramp production cycles.
  • Expected good units during ramp works out to 688 units at these inputs, and this is the headline figure for the scenario.
  • Gross ramp unit capacity works out to 1,350 units at these inputs.
  • Units lost to ramp downtime works out to 594 units at these inputs.
  • Units lost to launch yield loss works out to 68.04 units at these inputs.

How this compares with the baseline

  • Against the tool's baseline example, where expected ramp uptime sits at 78% and the headline result is 958 units, this scenario comes in 28.21% below the baseline at 688 units.
  • Use it during launch planning to set committable volumes, or mid-ramp to re-forecast as uptime and yield improve. A result at this level usually justifies acting on the stressed input before touching anything else, because every other figure in the table is downstream of it.

Results at a glance

  • Expected good units during ramp: 688 units (headline result)
  • Gross ramp unit capacity: 1,350 units
  • Units lost to ramp downtime: 594 units
  • Units lost to launch yield loss: 68.04 units

Run it with your numbers

  • To rerun this with your own numbers, open the live Production Ramp Capacity Calculator calculator, set expected ramp uptime to your actual value, and adjust the remaining inputs to match your operation.

Last reviewed 2026-05-12.