Cessna's Sovereign to Use Honeywell RE100(CS) APU

Honeywell will supply its RE100[CS] APU as well as environmental control and cabin pressure equipment for Cessna's new Citation Sovereign business jet.

"By providing an APU, environmental control and pressurization components, Honeywell can reduce overall costs," said Honeywell Engines & Systems president Steve Loranger.

The RE100 is designed specifically for business jets. It is 20 percent smaller and 30 percent lighter than previous business aircraft APUs, Honeywell says. It's rated at 135 equivalent shp and can be operated in flight for electrical power redundancy.

The environmental and cabin pressure control systems for the new Sovereign are "proven and robust designs" already in service on Cessna Excel and Citation X aircraft. The environmental pack employs a proprietary Honeywell 3-wheel, air-bearing cooling turbine with integral primary and secondary heat exchangers and low pressure water separation. The electro-pneumatic pressure system is digitally controlled.