400 Hz Generations Evolution, Effects on Installation Arrangements,
Abstract
The need for 400 Hz electric power airplanes keeps on increasing. Up to now the way to obtain constant frequency from variable speed drive is either hydro or electro-mechanical. New conversion systems are rising: they benefit from recent improvements and developments in high speed electrotechnics and power electronics. Rotational speeds running at more than 24000 rpm. are now accessible to the on-board generator and consequently a significant improvement of power-to-weight ratio is obtained. Installation of such a generator on aircraft entails a high speed gear which can be combined with it or, better, installed in the accessory gearbox. Cooling of the whole system can be realized by air or, better, by oil--electronic components included. Optimum design leads to sharing the oil circuit of the gearbox with the generator cooling system.
Document Details
- Document Type
- Technical Report
- Publication Date
- Sep 01, 1983
- Accession Number
- ADP002299
Entities
People
- C. Jacques