The latest civilian V/STOL aircraft are examined. It is found that such aircraft are more economical and convenient in short air flights, require lower capital investments compared with other systems, and have less influence on the environment.
hesham said:Here is a three variants for Hawker HS.141;
first HS.141-16 with 16 lift fans.
second HS.141-12 with 12 lift fans.
third HS.141-8 with 8 lift fans and two rear mounted engines.
http://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/19730004285_1973004285.pdf