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Aeromarine 40 / 41

aeromarine40b
40B

 

The Aeromarine Model 40 was a two-seat floatplane trainer aircraft serving the United States Navy. The aircraft was produced by the Aeromarine Plane and Motor Company of Keyport, New Jersey, and had already made a name for itself by supplying the US Navy with its first carrier-landed aircraft in the Aeromarine Model 39. Whereas the Model 39 could be utilized as a land-based and floatplane aircraft equally (requiring the conversion of the undercarriage to suit each task), the Model 40 was a dedicated flying boat using wing panels and struts of Model 39 on a new flying boat hull.

One or two 40-F may have been tested by the Coast Guard.


Design was conventional for the time, consisting of a contoured boat-like hull fitted to a boxy fuselage mounting a large unequal-span biplane wing configuration. Single pontoons were fitted as outrigger floats, one per each lower wing assembly. The upper and lower wing assemblies were joined by parallel struts making up two bays and fitting appropriate cabling. The student and instructor sat side-by-side just behind the nose and in front of the wing structure in an open-air cockpit. The view was superb from this position with their forward views protected by two simple curved windscreens. The empennage was adorned with a conventional large-area vertical fin and horizontal tailplane system showcasing rounded edges. The powerplant was placed within a strut configuration supporting the upper and lower wing assemblies at mid-span. The engine was situated well above and just behind the pilots, sporting a two-bladed pusher propeller system powered by a single Curtiss OXX-6 series V-8 water-cooled engine producing an output of roughly 100 horsepower (some later Model 40's were known to fit a Hispano-brand engine in its place). Performance from this pusher arrangement allowed for speeds of up to 71 miles-per-hour with a service ceiling of nearly 1,900 feet. Endurance was listed at about 4.5 hours of flight time.

200 Model 40's were initially ordered by the US Navy in 1918. Serialed A5040-5089, fifty 40-Fs were built. The model 40-F was operated by the US Navy as a trainer. The end of the war in November ultimately signified the end of the production contract, leaving only 50 Model 40 examples produced. Model 40's still managed to see service in the post-war world solely with the United States Navy, encompassing the early and fascinating inter-war years in America. Overall, their operational use proved the airframe too fragile for the constant rigors of water-born operations, to which these results helped in future American flying boat designs. The Aeromarine Model 40 was further developed into the Model 41 to which some existing Model 40's were converted to this newer design.

 

aerom-40
 
The Aeromarine 41 flying boat were conversions of Model 40s mentioned in 1922.
 

40
1919                     
Engine: Hisso, 150hp
Span: 48 ft 4 in        
Length: 28 ft 11 in
Seats: 2            
Speed: 85 mph
New price: US$9,000

40-B
1919                     
Engine: Hisso, 150hp
Span: 48 ft 4 in        
Length: 28 ft 11 in
Seats: 2            
Speed: 85 mph
New price: US$9,000

40-C
1918                    
Engine: Aeromarine U-8, 150hp
Seats: 2

40-F
1919
Engine: Curtiss OXX-6, 100hp
Wing span: 48 ft 6 in / 14.80m
Length: 28 ft 11in / 8.8m
Height: 11.48ft / 3.50m
Empty Weight: 2,061lbs / 935kg
Maximum Take-Off Weight: 2,590lbs / 1,175kg
Maximum Speed: 71mph / 114kmh / 62kt
Maximum Range: 314miles / 506km)
Service Ceiling: 1,903ft / 580m)
Seats: 2    
New price: US$8,100

40-L
1918                     
Engine: Aeromarine L, 130hp
Seats: 2            
Speed: 80 mph
Payload: 560 lb

40-T
1919                     
Engine: Curtiss OXX-6, 100hp
Seats: 2

40-U
1919                     
Engine: Aeromarine U-6D
Seats: 2

 

 


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