Project number
26014
Organization
Honeywell Aerospace
Offering
ENGR498-F2025-S2026
Honeywell is designing a new small TurboGenerator engine to support the trend of more electrification in the aerospace industry. The engine will put out 500kW of power through 2 stacked generators. Potential applications are the hybrid VTOL market for urban air mobility and commercial narrowbody APU replacement. These applications are very weight sensitive and require a gearbox that is optimized to be lightweight.
Design and build a prototype of a compact gearbox for Honeywell’s next-generation TurboGenerator engine that is optimized to be lightweight.
The gearbox shall have the following functionality:
• Receive input Power Turbine shaft of 32,000 rpm (geometry interface to be provided)
• Provide a generator output pad at ~7,840 rpm (geometry interface to be provided)
• Provide a Sprague clutch interface to HP spool shaft (concentric to PT shaft) driven by starter generator with light-off at a speed of 6,000 rpm
• Gearbox assembly dry weight target <40 lbs
• Allow for ease of maintenance; ie. remove and replace generators
• A workable oil lubrication concept for gearbox bearings and shafts
• Constructed from Mg EV31A with proper fire and corrosion resistant coatings
• FAA certifiable, ie. low-risk of failing applicable fire testing, endurance testing, strength testing, etc.
Design and build a prototype of a compact gearbox for Honeywell’s next-generation TurboGenerator engine that is optimized to be lightweight.
The gearbox shall have the following functionality:
• Receive input Power Turbine shaft of 32,000 rpm (geometry interface to be provided)
• Provide a generator output pad at ~7,840 rpm (geometry interface to be provided)
• Provide a Sprague clutch interface to HP spool shaft (concentric to PT shaft) driven by starter generator with light-off at a speed of 6,000 rpm
• Gearbox assembly dry weight target <40 lbs
• Allow for ease of maintenance; ie. remove and replace generators
• A workable oil lubrication concept for gearbox bearings and shafts
• Constructed from Mg EV31A with proper fire and corrosion resistant coatings
• FAA certifiable, ie. low-risk of failing applicable fire testing, endurance testing, strength testing, etc.