Absolute Ceiling to Size the Aircraft for Time to Climb

Aircraft Type

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Piston

normally aspirated

12000 - 18000

3600 - 5600

supercharged

15000 - 25000

4600 - 7600

Turbojet or Turbofan

Commercial

40000 - 50000

12200 - 15200

Military

40000 - 55000

12200 - 16800

Fighters

55000 - 75000

16800 - 22800

Military Trainers

35000 - 45000

10700 - 13700

Turboprop or Propfan

Commercial

30000 - 45000

9100 - 13700

Military

30000 - 50000

9100 - 15300

Supersonic Cruise

55000 - 80000

16800 - 24400