Would it be possible to build an engine twice the size of the Trent 900 in terms of physical size, i.e. doubling the diameter?
Let's assume that it's feasible to build an aircraft tall enough to install the engines. I will go on to ask about the extra heat at the engine core or hot sections of the engines but to run such an engine, would current materials be able to tolerate the extra heat? Would the larger fans tolerate the extra stresses if the diameter doubled?