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Felixstowe F.5


Reconnaissance Flying Boat


United Kingdom | 1918



"The Felixstowe F-series became the standard flying boat for the RAF and was adopted by the Americans in time."

Power & Performance
Those special qualities that separate one aircraft design from another. Performance specifications presented assume optimal operating conditions for the Felixstowe F.5 Reconnaissance Flying Boat.
2 x Rolls-Royce Eagle VIII 12-cylinder Vee piston engines developing 350 horsepower each.
Propulsion
88 mph
142 kph | 77 kts
Max Speed
6,808 ft
2,075 m | 1 miles
Service Ceiling
590 miles
950 km | 513 nm
Operational Range
216 ft/min
66 m/min
Rate-of-Climb
Structure
The nose-to-tail, wingtip-to-wingtip physical qualities of the Felixstowe F.5 Reconnaissance Flying Boat.
4
(MANNED)
Crew
49.2 ft
15.01 m
O/A Length
103.7 ft
(31.60 m)
O/A Width
18.8 ft
(5.72 m)
O/A Height
9,101 lb
(4,128 kg)
Empty Weight
12,681 lb
(5,752 kg)
MTOW
Armament
Available supported armament and special-mission equipment featured in the design of the Felixstowe F.5 Reconnaissance Flying Boat .
STANDARD:
1 x 7.7mm (0.303 caliber) Lewis machine gun in flexible nose mounting.
2 OR 3 x 7.7mm (0.303 caliber) Lewis machine gun in midship positions.

OPTIONAL:
4 x 230lb bombs along underwing racks.
Variants
Notable series variants as part of the Felixstowe F.5 family line.
F.5 - Base Production Series Designation; 53 examples produced.
F.5L - American designation for F.5 production; fitted with Liberty engines; production by Naval Aircraft Factory; Curtiss and Canadien Aeroplanes of Canada; 227 examples produced.
Curtiss F.5L - Alternative American Designation
Aeromarine 75 - Civilian Airliner conversions from F.5L models.
Authored By: Staff Writer | Last Edited: 04/22/2017 | Content ©www.MilitaryFactory.com | The following text is exclusive to this site; No A.I. was used in the generation of this content.

The Felixstowe F.5 series originated in the United Kingdom as a militarized flying boat in the last year of World War 1 (1918). Her design was credited to Lieutenant Commander John C. Porte of the Royal Navy (out of the "Seaplane Experimental Station" at Felixstowe - hence her designation). Porte had already taken the Curtiss H.12 flying boat (Curtiss Model H) and modified it into a better product when he designed his Felixstowe F.2a series. The F.2a series would go on to become the standard Royal Navy Air Service flying boat of World War 1 while the follow-up F.5 led a healthy existence during the post-war period defined as the "inter-war" years (in both military and civilian guises).

Porte continued to evolve the F.2a design and eventually produced the Felixstowe F.3 series. However, the new design being larger and thusly heavier, it suffered from poor handling while still benefiting from having greater range and an increased bomb load capacity - two good qualities for a flying boat to have. As such, development continued and ultimately resulted in the completely redesigned "F.5", essentially a design intended to mate together the benefits of both preceding designs to make for a single excellent sea-borne patrol platform - first flight followed in May of 1918. Despite the improved qualities exhibited from the prototype, the powers that be deemed that the F.5 should incorporate as many production elements of the existing F.3 as possible to help keep costs down and numbers steady. This resulted in production versions of the F.5 lacking much of the performance displayed by the prototype, the end-product finding it hard to even match the performance the preceding F.2a and F.3 it was intended to best.

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Regardless, the F.5 went on to become the standard flying boat of the British Royal Air Force from 1918 onwards though missing out on operational service in World War 1 altogether. Production of the base F.5 military boat was as follows: Short Brothers (23 examples); Phoenix Dynamo Manufacturing Company (17 examples); Gosport Aviation (10 examples); Dick, Kerr & Company (2 examples); Seaplane Experimental Station (1 example).

The Felixstowe F.5 maintained an elegant appearance consistent with flying boats of the time, made most identifiable by its hull-like fuselage. The fuselage was contoured where possible, bulbous at the lower portions to effectively displace water, with little detail to disrupt airflow. Wings were set amidships and were biplane in nature and slightly unequal in span, held in place by parallel bracing struts and cabling with pontoons located outboard. The engines were mounted between the upper and lower wing assemblies, well clear of salt spray from the sea. The fuselage tapered upwards towards the empennage which sported a single, large-area angular vertical tail fin and high-mounted, large-area horizontal tailplanes. Cabling extended from amidships rearwards towards the tail fin. The crew of four sat in open-air cockpits with accommodations for two pilots (seated side-by-side) and a pair of machine gunners - one manning the forward mount in the front circular cockpit and the other nestled between the two engine mounts amidships in another circular cockpit. Defensive armament centered around a collection of four Lewis aircraft machine guns, one set in a flexible mounting in the nose and the other two (or three) Lewis guns positioned along amidships. As a bomber, the F.5 could make use of four underwing bomb racks for the carrying of 4 x 230lb bombs. Power was derived from twin Rolls-Royce Eagle VIII series V12 inline piston engines delivering approximately 350 horsepower spinning two-bladed propellers. This provided for speeds of up to 88 miles per hour with a service ceiling of 6,800 feet and endurance for seven hours of flight time.

The base F.5 served with the British Royal Air Force and the Royal Naval Air Service branches. With the RAF, it made up the inventories of Squadrons No. 230, 231, 232, 238, 247, 249, 259, 261 and 267.

F.5 production was also undertaken by the Americans when the US Navy adopted the type into service in 1918. These were powered by a pair of Liberty engines and produced by Curtiss (60 examples), the US Naval Aircraft Factory (137 examples) in the US and by Canadian Aeroplanes (30 examples) out of Toronto, Canada. The Liberty-powered mounts came under the designation of "F.5L" and some 227 examples were built in all. F.5Ls were the US Navy's primary flying boat up until 1928 before being replaced by the PN-12 series. Curtiss F.5Ls also served in the civilian airliner role after some conversion. These were operated by the Aeromarine Plane and Motor Company beginning in 1919 under the company designation of "Aeromarine 75". Operators of this type included both the United States and Argentina.

Japan license-produced the F.5 for its Imperial Japanese Navy to the tune of 60 examples, these handled by the Hiro Naval Arsenal.

The F.5 served with the RAF up until August of 1925, replaced by the Supermarine Southhampton.

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Operators
Global customers who have evaluated and/or operated the Felixstowe F.5. Nations are displayed by flag, each linked to their respective national aircraft listing.

Total Production: 280 Units

Contractor(s): Short Bros; Phoenix Dynamo Mfg Co; Gosport Aviation Dick, Kerr & Co; Seaplane Experimental Station Felixstowe - UK
National flag of Argentina National flag of modern Japan National flag of the United Kingdom National flag of the United States

[ Argentina; Japan; United Kingdom; United States ]
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Image of the Felixstowe F.5
Left side view of the Felixstowe F.5 in flight
2 / 2
Image of the Felixstowe F.5
Right side view of a Felixstowe F.5L converted into the Aeromarine 75 passenger airliner

Going Further...
The Felixstowe F.5 Reconnaissance Flying Boat appears in the following collections:
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