Edge Rewrite
// HTMLRewriter · presentation

This page was redesigned at the edge.

Cloudflare fetched the original article and streamed it through HTMLRewriter to apply an entirely new visual system without rebuilding the source page.

// request.cf · coarse context

A page that knows where it met you.

Only coarse request metadata is shown. This demo does not display or persist visitor IP addresses.

Country
US
Cloudflare location
CMH
Connection
HTTP/2
Language
Not provided

Ray ID: a2208133fee81ae0

Jump to content

Energy Efficient Engine

From Wikipedia, the free encyclopedia

The Energy Efficient Engine was a program funded by NASA in the 1970s to develop technologies suitable for energy efficient turbofans. Its goal was to improve thrust specific fuel consumption by 12% compared to a GE CF6-50C.[1] Both General Electric and Pratt & Whitney produced turbofans for the program. The GE core featured a 23:1 high-pressure (HP) ratio ten-stage HP compressor,[2] later used in the GE90 and GEnx. P&W also used a ten-stage HP compressor in their core, but it developed 14:1 pressure ratio.

References

[edit]
  1. Hall, Edward J.; Lynn, Sean R.; Heidegger, Nathan J.; Delaney, Robert A. (April 1998), Energy Efficient Engine Low Pressure Subsystem Flow Analysis (PDF), Lewis Research Center, NASA, pp. 6–7, hdl:2060/19980232149
  2. Ciepluch, Carl C.; Davis, Donald Y.; David E. Gray (1987). "Results.of NASA's Energy Efficient Engine Program" (PDF). Journal of Propulsion and Power. 3 (6): 560–568. doi:10.2514/3.23024. Archived from the original on 2012-04-26.