Is it just me or do you feel like slapping the designers of HSA and telling then to loose the ______ing V in V/STOL ?Joint Study - Fixed wing Bi-Service aircraft.Fixed high aspect ratio wing with twin deflected thrust main engines plus additional lift boost engines.
I wonder if that project was one that Dave Williams worked on when he was at Hatfield. Its got an Addax-S vibe to it...From the Hatfield Future Projects Newsletters No.24, April 1988
1969: HS138/145 VTOL Fan Lift W.S.R (Wide Speed Range) projects...
"The HS138 is an aircraft designed to the draft specification for a "Wide Speed Range Aircraft". It is intended to combine the high speed attack capabilities of the high speed strike aircraft with the low speed search and strike potential of the battlefield helicopter. The HS145 is an 8-seat executive aircraft using the same lift fan and outer wing geometry as the HS138. They each employ four RB.202-25 lift fans at the same rating as used in the HS141 VTOL airliner (i.e. 10,900 lb. SLST)and two propulsion engines with full thrust deflection. One means of achieving the desired degree of commonality is shown by the configuration represented
The specified mission with a crew of two and a 2000 lb weapon load (Carried out and back) is over a radius of 115 nm. at sea level under ISA 15°C temperature conditions at 575 mph EAS. At mid point, a search at a speed not exceeding 60 mph EAS is carried out for 15 minutes followed by 5 minutes at maximum speed."