Abstract: A multi-stage, intercooled centrifugal compressor with integral power generator system for a mobile, ground-based aviation support cart is disclosed. A bootstrap-type turbo compressor module which can supply cooled air. The system may be operated in one of several modes: high pressure “bleed air” (e.g., 35-50 psig) for jet engine start, conditioned or cooled air (e.g., 2-5 psig) for aircraft cooling purposes, or electrical ground power. Electrical ground power and conditioned air may also be supplied simultaneously if desired.