Flight 77, the supposed plane that hit the Pentagon on 9/11 was a Boeing 757. It is the same plane that President Trump flies in.
A Boeing 757 uses one of 2 different engines: Either a Rolls-Royce RB211 or a Pratt & Whitney PW2000
Here is a diagram of a Rolls-Royce RB211. It says the opening of the turbine of a RB211 is 84.8 inches in diameter. (7 feet)
https://ars.els-cdn.com/content/image/3-s2.0-B0122274105003562-gr7.jpg
Here is a photo of President Trumps plane (757), look at the size of the opening of the plane turbine and the person standing next to the plane. Look at the center hub of the turbine, compare its size to the person standing next to the plane.
Here is a photo from the Pentagon on 9/11. Look at the round object behind the person on the left. That is the center hub of a turbine from the object that hit the Pentagon. Notice anything wrong?
What's wrong is that you don't know your way around a modern aircraft engine. The 7-foot-diameter applies to the FAN, which is at the front of the engine, and is entirely consistent with the photo of Trump's airplane. The last photo, of the wreckage, shows either the last stage of the COMPRESSOR or what is probably the first stage of the TURBINE, consistent with the Rolls-Royce diagram. (Blade heights are already small in these positions; nothing is broken off.) As "Pbman2" points out, the central button could be a shaft separation.
Let’s just forget about planes and details about planes and let’s talk about building 7.
Change the subject...an old maneuver. No thanks. I don't trade one empty conspiracy for another.