There were fire bomber versions of BAe-146 and RJ-85.
I only seen third party conversions - and some of them have quite extensive changes of basic airframe.Interesting. Are you talking about some early BAe projects or the later conversions?
I agree with you about necessary protection of structure for propeller aircraft. Although, we could remember a lot of current turboprop airliners - and propeller noise is acceptable for their service.Turboprops require structural upgrades on the fuselage to protect vitals during prop failure. They are also too loud for passenger operations in western countries, so cannot imagine they will be popular. People accept the high pitch of jets better.
There are many, many turboprop high-wing regional airliners in current airline service in the US, Canada, etc.Turboprops require structural upgrades on the fuselage to protect vitals during prop failure. They are also too loud for passenger operations in western countries, so cannot imagine they will be popular. People accept the high pitch of jets better.
There were fire bomber versions of BAe-146 and RJ-85.
Many light turboprops (e.g. Beechcraft King Air) simply have an extra layer of "armor" glued/riveted/bolted to the outside of the fuselage in line with the propeller arcs. Bolts allow this sacrificial layer to be quickly replaced. The primary function is to absorb impacts from ice ice thrown from propellers.I agree with you about necessary protection of structure for propeller aircraft. Although, we could remember a lot of current turboprop airliners - and propeller noise is acceptable for their service.Turboprops require structural upgrades on the fuselage to protect vitals during prop failure. They are also too loud for passenger operations in western countries, so cannot imagine they will be popular. People accept the high pitch of jets better.