Bell CTR-7500

[Triton]

The Bell CTR-7500 was an all-new 75-passenger design.

Propulsion was to be assumed by the largest projected growth version of the Allison T406 engine delivering up to 12883shp (16100shp for 30 seconds).

Technical data for Bell CTR-7500:

Wing span: 19.20m, rotor diameter: 14.02m, overall length: 25.51m, take-off weight: 36158kg, cruising speed: 555km/h, range: 1110km

Source:
http://www.aviastar.org/helicopters_eng/bell_ctr-7500.php

 

[Jemiba]

A side-view of the variant in the second picture we had here, I think
http://www.secretprojects.co.uk/forum/index.php/topic,1222.msg23480.html#msg23480 , #89,
with V-tail, but obviously minus canards.

 

[Triton]

Artist's impression of Bell Boeing NASA CTR-7500.

Source:
http://www.boeingimages.com/C.aspx?VP3=SearchResult&VBID=2JRSN2PXP22NNW