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Curtiss A-1 Triad (Model E)


Experimental Navy Floatplane Aircraft [ 1911 ]



The Curtiss A-1 Triad became the first aircraft to be purchased by the United States Navy.



Authored By: Staff Writer | Last Edited: 11/02/2017 | Content ©www.MilitaryFactory.com | The following text is exclusive to this site.

GO TO SPECIFICATIONS [+]
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Like the United States Army's air service of the early 20th century, the United States Navy (USN) air power managed a humble beginning through a series of experimental aeroplanes used to prove certain concepts of naval service viable. The Curtiss A-1 "Triad" became the United States Navy's first-ever aircraft when ordered on May 8th, 1911 and this platform was developed as a true "amphibian" - able to take-off and land from both water and airfields respectively thanks to a floatplane pontoon arrangement for the former action and a retractable wheeled undercarriage for the latter. The "Triad" name stemmed from this versatility for the machine operated through all three facets - air, land, and sea. While not used in a frontline, combat-minded operational manner by the USN, the A-1 still held tremendous value in a developmental sense concerning testing, doctrine, and pilot training. The Triad saw a first flight on February 25th, 1911 and carried the company model designation of "Model E".

Experimentation with such over-water aircraft like the Triad is what piqued the interest of USN authorities in the early years of flight. Glen Curtiss (1878-1930), founder of his famous Curtiss Aeroplane Company, showcased to the Navy the value of his floatplane designs when he landed an aircraft on the water alongside a US Navy vessel. The vessel then used its onboard crane to recover the aircraft - giving rise to the concept of seaplane observation platforms that was carried even into World War 2 (1939-1945) for over-the-horizon scout work. The USN moved on purchasing some fourteen A-1s and variants included the E-4 and E-8 with differences laying in the type and output of engine in play (the "E-4" had a 4-cylinder engine, the "E-8" an 8-cylinder engine, and the "E-8-75" an engine of 75 horsepower output).

The A-1 provided the important groundwork for US naval aviation and introduced flight to the first generations of American naval airmen. Despite its rickety appearance, the Triad was consistent with design and construction philosophy of the time. A biplane wing arrangement was used with parallel struts for support. The pontoon assembly was installed under the aircraft with bicycle-style landing wheels straddling the fixture. The pilot (and one other passenger) sat at the front of the wing arrangement with a horizontal plane fitted just ahead of his position. An automobile-style steering wheel was used for primary controlling. The powerplant was fitted aft of the pilot and between the upper and lower wing structures, the engine operating in a "pusher" arrangement and driving a two-bladed wooden propeller facing the rear of the aircraft. Thin strut work and cabling connected the mass of the aircraft to several more control and stability surfaces found at the rear of the aircraft.©MilitaryFactory.com
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The Triad was used in the USN's first-ever (semi-successful) catapult launch test and made the first water landing at night. The platform was also used for early tests in surface-to-air communications and overland endurance ventures. The A-1 series continued in this test-minded role until its value had been played out and all-new technologies rendered the design obsolete. By the time of World War 1 (1914-1918), a new generation of biplane fighters arose to take the aviation mantle from these early - and usually lethal - pioneering efforts.

A replica of the A-1 Triad hangs in the lobby of the Naval Aviation Museum in Pensacola, Florida, USA while an original (flyable) example is preserved at the EAA AirVenture Museum of Oshkosh, Wisconsin, USA.©MilitaryFactory.com
Note: The above text is EXCLUSIVE to the site www.MilitaryFactory.com. It is the product of many hours of research and work made possible with the help of contributors, veterans, insiders, and topic specialists. If you happen upon this text anywhere else on the internet or in print, please let us know at MilitaryFactory AT gmail DOT com so that we may take appropriate action against the offender / offending site and continue to protect this original work.
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Specifications



Service Year
1911

Origin
United States national flag graphic
United States

Status
RETIRED
Not in Service.
Crew
2

Production
14
UNITS


National flag of the United States United States
(OPERATORS list includes past, present, and future operators when applicable)
Maritime / Navy
Land-based or shipborne capability for operating over-water in various maritime-related roles while supported by allied naval surface elements.
Intelligence-Surveillance-Reconnaissance (ISR), Scout
Surveil ground targets / target areas to assess environmental threat levels, enemy strength, or enemy movement.
X-Plane (Developmental, Prototype, Technology Demonstrator)
Aircraft developed for the role of prototyping, technology demonstration, or research / data collection.


Length
27.7 ft
(8.43 m)
Width/Span
37.0 ft
(11.28 m)
Height
9.3 ft
(2.84 m)
Empty Wgt
981 lb
(445 kg)
MTOW
1,576 lb
(715 kg)
Wgt Diff
+595 lb
(+270 kg)
(Showcased structural values pertain to the base Curtiss A-1 Triad (Model E) production variant)
Installed: Variable - 4- or 8-cylinder Curtiss brand engine of 40, 60, or 75 horsepower depending on installation; installed as "pusher" arrangement driving two-bladed propeller.
Max Speed
65 mph
(105 kph | 57 kts)
Range
124 mi
(200 km | 370 nm)


♦ MACH Regime (Sonic)
Sub
Trans
Super
Hyper
HiHyper
ReEntry
RANGES (MPH) Subsonic: <614mph | Transonic: 614-921 | Supersonic: 921-3836 | Hypersonic: 3836-7673 | Hi-Hypersonic: 7673-19180 | Reentry: >19030


(Showcased performance specifications pertain to the base Curtiss A-1 Triad (Model E) production variant. Performance specifications showcased above are subject to environmental factors as well as aircraft configuration. Estimates are made when Real Data not available. Compare this aircraft entry against any other in our database or View aircraft by powerplant type)
None.


Supported Types




(Not all ordnance types may be represented in the showcase above)
A-1 "Triad" - Base Series Designation
Model E - Curtiss company model designation
Model E-4 - Fitted with a 4-cylinder engine of 40 horsepower
Model E-8 - Fitted with an 8-cylinder engine of 60 horsepower.
Model E-8-75 - Fitted with an 8-cylinder engine of 75 horsepower.


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