Thread
:
NASA's Electric Airplane Project Moves Forward
View Single Post
#
2
March 21st 15, 12:02 AM posted to rec.aviation.piloting
Dave Doe
external usenet poster
Posts: 378
NASA's Electric Airplane Project Moves Forward
In article ,
, Larry Dighera says...
Mentioned in the NASA video at the YouTube link below are the reasons this
revolutionary technology are an exciting step forward for aviation.
* Four horsepower per pound are achievable with electric systems. This is
comparable to turbine engine performance.
* Ninety-five percent efficiency is possible with electric propulsion
systems compared to 45% turbine engine efficiency. This translates into
reduced fuel costs and emissions.
* The technology aims to achieve an 80% reduction in energy requirements.
Notice the rear-facing wing-tip engines on this concept drawing:
http://www.aero-news.net/images/content/aerospace/2015/Airborne-NasaLeapTech-031915.jpg.
Is this a means of overcoming the drag produced by counter rotating wing-tip
vortices inherent in virtually all current aircraft?
I don't think so. Have a look at this...
https://www.youtube.com/watch?v=QKCK...PLCdGBvDMYlr8-
tm7kQibn0iDCBbgpLbX6
--
Duncan.
Dave Doe
View Public Profile
View message headers
Find all posts by Dave Doe
Find all threads started by Dave Doe