(334) 386-5400
(334) 386-5410 Fax

Home > Aircraft Turbocharger

Turbochargers in Aviation

Bruce Bohannon Rajay Turbo

In 1997, Kelly Aerospace acquired Honeywell's Rajay turbocharger line and thus obtained FAA/PMA certification on all Rajay turbochargers, components, and parts, enabling the company to provide worldwide distribution of those items.

Kelly Aerospace expanded its turbocharger "system" capability in September 1998 with its acquisition of Honeywellís aircraft turbocharger valves and controls manufacturing line. This particular acquisition was significant as it placed Kelly in the position of being the only certified supplier of a complete aviation turbocharger system, including the turbocharger units and their required control devices. The company continues to enjoy this competitive advantage today.

In September 2000, Kelly Aerospace purchased Honeywell's Garrett aviation turbocharger manufacturing line.

September 2010, Kelly Aerospace Energy Systems was aquired by Tailwind Technologies Inc. and formed the company Hartzell Engine Technologies (HET). The integration of this acquisition solidified Hartzell as the sole source provider of OEM turbochargers and related controls to GA industry, and by far the largest provider of replacement components to the aftermarket. Though repair facilities can overhaul and repair these items, no other company in the world offers approved replacement components.

Turbocharge Your Engine - Exclusively at Aviall

Aviall logoAll Hartzell Engine Tech Turbos, Valves, & Controls are sold exclusively at: www.aviall.com

Call (800) AVIALL-1

Hartzell Engine Technologies -
Aircraft Turbos

Here at Hartzell (HET), we are constantly expanding our product lines to meet the ever changing needs of the aviation industry. Our purchase of the RAJAY and Garrett turbochargers, pressure relief valves, wastegates, and controllers makes us your best source for both new and rebuilt turbocharging systems for all the general aviation aircraft flying today.

  • Factory New, OEM Approved
  • Rebuilt to Factory New Tolerances
  • Performance alloys that resist cracking
  • 18 month unlimited hours warranty

Valves & Controls

Kelly Aerospace Valves - Controls
  • Hartzell Engine Technologies Factory New & Rebuilt Valves & Controls (Previously Garrett)
  • FAA/PMA Replacement Parts

Design

  • Turbocharger consists of radial-outflow type air compressor direct-coupled to radial-inflow type turbine
  • Turbine and compressor wheels, mounted on common shaft, rotate at same speed
  • Wheel shaft supported by full floating bearings in cast iron center housing
  • Pressurized lubricating oil, from engine lube system, delivered to shaft bearings through drilled passages in center housing
  • Lubricating oil collected in center housing drains by gravity or is scavenged back to the engine crankcase
  • Flow of gas directed to and from wheels by specially designed housings attached to center housing

Maintenance

  • No scheduled periodic maintenance of turbocharger required
  • Good maintenance practices must be observed for engine lubrication, air intake, and exhaust systems for maximum turbocharger life and performance

Operation

  • Turbine, driven by exhaust gas from engine exhaust manifold, drives direct-coupled compressor
  • Compressor output (compressed air) is delivered through ducting to engine intake manifold
  • Increased density of fuel/air mixture in engine permits increased power output
  • Turbocharger speed and compressor output are controlled by use of an aneroid type controller and wastegate, to maintain sea level horsepower to high altitude. Bleed air from the compressor is also available for cabin pressurization options.

Aircraft Turbo System includes: (cut-a-way example)

  • Turbine Housing
  • Turbine Wheel
  • Center Housing
  • Full Floating Shaft Bearing
  • Thrust Bearing
  • Thrust Collar
  • Back Plate
  • Compressor Housing
  • Compressor Wheel
  • Pressure Relief Valve
  • Sonic Venturi
  • Variable Controller
  • Exhaust Bypass Valve