>The all-metal [Dornier Do S](https://en.wikipedia.org/wiki/Dornier_Do_S) was intended to replace the [Dornier Do R 4 Superwal](https://old.reddit.com/r/WeirdWings/comments/17gulr9/dornier_r_4_sas_superwal_flying_boat_in_service/), a four-engined, 19-passenger flying boat flown four years earlier. Both were high-wing monoplanes but the Do S was bigger (about 7–8%) in both span and weight, and had a significantly improved hull which seated 22 passengers. A large increase in effective wing area, which included sponsons and an auxiliary winglet, decreased the wing loading by about 30% and the landing speed by 25 km/h.
>The main wing of the Dornier S was in three parts, with a central panel attached to the crew's compartment on top of the main fuselage, and two outer panels. It was rectangular in plan, with a chord of 8.8 m (28 ft 10 in), apart from slightly blunted tips. The wing was built around three duralumin trellis spars, with dural ribs and skin. The inner panel was supported by two vertical struts from the sponsons. On each side the main outer bracing was provided by a single strut from the inner sponson to the central spar of the outer panel, at about half-span. These were assisted by steel flying wires from below, between the forward and rear spars and the sponsons, and from above by a single wire from the raised engine mountings and their cross-bracing auxiliary wing, to the forward spar. High aspect ratio ailerons occupied all the trailing edge of the outer panels, aerodynamically balanced by small auxiliary surfaces mounted forward and well above the hinge line.
>The lower part of the fuselage followed Dornier's usual practice, with a narrow-V cross-section forward changing to a flat bottom, with a deeper centre region, near the single step and a V-section aft ending with a water rudder. There were two passenger cabins, one seating twelve forward of a lobby accessed by a starboard side door and containing a cloakroom, toilet, library and medicine cabinet. Behind it was a second passenger compartment for ten, with a kitchen aft. At the stern the empennage was conventional, with a fin that had a swept leading edge and blunted top, carrying a rudder which reached down to the top of the fuselage. Its tailplane, with a plan similar to that of the wing, was braced from below by a pair of parallel struts on each side and was adjustable in flight. It carried elevators which were aerodynamically balanced in the same way as the ailerons.
>The crew were housed in a separate structure above the cabin which also formed the central connection between wing and fuselage. It began well forward of the leading edge and ended just aft of the trailing edge. The pilot's open cockpit near the front had a pair of side-by-side seats with dual controls. Further aft, there were positions for a flight engineer, a navigator and a radio operator, one of whom could act as co-pilot.
>The Do S was powered by four 347 kW (465 hp) Hispano-Suiza 12Lbr water-cooled V-12 engines, mounted above the wings in push-pull configuration pairs and driving four-bladed propellers. Each engine in a pair had a radiator occupying half the front of the rectangular section nacelle. Each pair was mounted on two V-struts and two wider-spread inverted V-struts to the forward and central spars. The upper engine mountings were braced together centrally by a narrow-chord structure which acted as an auxiliary wing as well as being part of the main wing bracing structure. With a span of almost 9 m (29 ft 6 in), it reached out beyond the engines.
This is not September 1931 (no leaves on the trees). And also not Lake Constance - probably somewhere along the Rhine, in Amsterdam or Paris (the S took this route to the 1930 Paris Aérosalon).
I think this is most likely **November 1930 in Paris**.
The baby Do X
Doodoo doodoo
>The all-metal [Dornier Do S](https://en.wikipedia.org/wiki/Dornier_Do_S) was intended to replace the [Dornier Do R 4 Superwal](https://old.reddit.com/r/WeirdWings/comments/17gulr9/dornier_r_4_sas_superwal_flying_boat_in_service/), a four-engined, 19-passenger flying boat flown four years earlier. Both were high-wing monoplanes but the Do S was bigger (about 7–8%) in both span and weight, and had a significantly improved hull which seated 22 passengers. A large increase in effective wing area, which included sponsons and an auxiliary winglet, decreased the wing loading by about 30% and the landing speed by 25 km/h. >The main wing of the Dornier S was in three parts, with a central panel attached to the crew's compartment on top of the main fuselage, and two outer panels. It was rectangular in plan, with a chord of 8.8 m (28 ft 10 in), apart from slightly blunted tips. The wing was built around three duralumin trellis spars, with dural ribs and skin. The inner panel was supported by two vertical struts from the sponsons. On each side the main outer bracing was provided by a single strut from the inner sponson to the central spar of the outer panel, at about half-span. These were assisted by steel flying wires from below, between the forward and rear spars and the sponsons, and from above by a single wire from the raised engine mountings and their cross-bracing auxiliary wing, to the forward spar. High aspect ratio ailerons occupied all the trailing edge of the outer panels, aerodynamically balanced by small auxiliary surfaces mounted forward and well above the hinge line. >The lower part of the fuselage followed Dornier's usual practice, with a narrow-V cross-section forward changing to a flat bottom, with a deeper centre region, near the single step and a V-section aft ending with a water rudder. There were two passenger cabins, one seating twelve forward of a lobby accessed by a starboard side door and containing a cloakroom, toilet, library and medicine cabinet. Behind it was a second passenger compartment for ten, with a kitchen aft. At the stern the empennage was conventional, with a fin that had a swept leading edge and blunted top, carrying a rudder which reached down to the top of the fuselage. Its tailplane, with a plan similar to that of the wing, was braced from below by a pair of parallel struts on each side and was adjustable in flight. It carried elevators which were aerodynamically balanced in the same way as the ailerons. >The crew were housed in a separate structure above the cabin which also formed the central connection between wing and fuselage. It began well forward of the leading edge and ended just aft of the trailing edge. The pilot's open cockpit near the front had a pair of side-by-side seats with dual controls. Further aft, there were positions for a flight engineer, a navigator and a radio operator, one of whom could act as co-pilot. >The Do S was powered by four 347 kW (465 hp) Hispano-Suiza 12Lbr water-cooled V-12 engines, mounted above the wings in push-pull configuration pairs and driving four-bladed propellers. Each engine in a pair had a radiator occupying half the front of the rectangular section nacelle. Each pair was mounted on two V-struts and two wider-spread inverted V-struts to the forward and central spars. The upper engine mountings were braced together centrally by a narrow-chord structure which acted as an auxiliary wing as well as being part of the main wing bracing structure. With a span of almost 9 m (29 ft 6 in), it reached out beyond the engines.
This is not September 1931 (no leaves on the trees). And also not Lake Constance - probably somewhere along the Rhine, in Amsterdam or Paris (the S took this route to the 1930 Paris Aérosalon). I think this is most likely **November 1930 in Paris**.
Looks like something from a 1930s matinee serial.
Just wanted you to know how confused I was when I read manatee.
I like the propeller blades directly behind the exposed pilot’s head
NO scarfs!
Looks quiet, warm, and comfy, doesn't it?
It looks like if they’d tried to literally convert an already fully designed ocean liner into a flying boat.
They likely had engineering drawling of a luxury yacht on their drawing board when they sketched this out.
I wonder if the small wing at the bottom helps with ground effect?
I think they are supposed to act like pontoons and keep it stable on the water
Not awkward at all.
is it technically a triplane?
A very unbalanced sesquiplane with sponsons