Some Piasecki helicopters are jokingly referred to as “flying bananas” based on their curved fuselages (search the Internet for pictures of the Piasecki models “HRP Rescuer” and “H-21 Workhorse/Shawnee”). Piasecki helicopters are well-known for their tandem rotor system; two rotors, front and back, turning in opposite directions counteract each other’s torque. The YH-16 Transporter shown in this digital rendering of my Lego model depicts what was (at the time) the world’s largest as well as the first turbine-powered helicopter. The huge glass windscreen in the front protected the crew of three. The cargo bay could hold 47 passengers; the length of the fuselage was 77.5 feet. Only two were ever built: the first flight was in late October 1953, but in January 1956 the second prototype crashed killing both pilots, and the project was cancelled shortly thereafter. Nevertheless, well into the 1960s one could buy a plastic model kit (which I remember building as a youth). I have not built this 333-piece Lego model; I would need the surface area of a coffee table to display it. So far this is my only Lego model to use as rotor blades Technic part 99013pb01, which has 2 pinholes to secure it to a rotor mast, and each blade is 30.5 studs long. So each of those 6 rotors depicted is a single Lego piece. I fashioned the cockpit windscreen out of a set of 7 Lego panels (transparent light blue) that are 6 studs tall... with two more transparent windscreens atop them.
Below: Cutaway of some windscreen panels to view into the pilots' cabin - they sit atop a floor over some machinery, though the windscreen wraps around and underneath them towards the rear of the aircraft. If the world has ever seen an actual helicopter with more glass in its front windscreen than the YH-16, I'd like to know what it is!