Avro 504

Biplane Reconnaissance / Biplane Trainer Aircraft [ 1913 ]

The Avro Type 504 biplane became one of the most remarkable airplane designs to come out of the fighting of World War 1 - over 10,000 were produced.

Authored By: Staff Writer | Last Edited: 05/28/2020 | Content ©www.MilitaryFactory.com | The following text is exclusive to this site.

Image from the National Museum of the United States Air Force, Dayton, Ohio.

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The British-originated Avro "Type 504" biplane series of aircraft would become the most-produced and influential aircraft designs of the World War 1 period, being fielded from 1913 into the early part of the 1930s. The design's service originally began as an armed reconnaissance biplane until, eventually, the outmoded series was relegated to the training role with the arrival of new and better-performing fighter aircraft seen in The Great War. However, it was in this new role that the Avro 504 would go on to make a name for itself with the British Royal Air Force (RAF) and others for decades to come.

The Avro Type 504 followed tried-and-true design and construction practices for its make-up and was centered around a single engine biplane (over-under) design. Depending on the production variant, the aircraft could seat one or two crewmen and machine gun armament was usually 1 x 7.7mm Lewis machine gun on a trainable, rear-facing mounting at the rear cockpit. Both cockpit positions were of the open-air variety. The aircraft could further be armed with conventional drop bombs at underwing hardpoints for ground-attack sorties. Early production models also contained a landing skid in addition to its fixed landing gears for additional support when landing, though this assembly was removed in future operational forms when found to add little.

Its single Gnome rotary-based engine developed 80 horsepower though, in practice, it was closer rated to 60 horsepower driving a two-bladed propeller unit at the nose. Performance figures (Type 504K) included a maximum speed of 95 miles-per-hour though cruising was closer to 75 mph. Range was out to 250 miles and its service ceiling reached 16,000 feet. Rate-of-climb was near 700 feet-per-minute.

The legacy of the Type 504 began when a further development of the Avro "Type 500" basic trainer biplane was drawn up. An order was then placed by the British Royal Navy and Army services and pushed the Type 504 in formal operational service during 1913, just prior to the events beginning the First World War. Early combat experience saw the Type 504 conduct limited strikes against enemy ground targets with the more-than-occasional Zeppelin-busting sortie mixed in. Though a relative success in these critical roles, the advancing technology of the war meant that the Type 504 was drawn back to airman training as soon as 1914 - the year the war began.

Despite this, the Type 504 proved to be a versatile performer as proven by the myriad of variants manufactured and operated and these would, in turn, produce minor structural revisions, new designations for specialized roles, and a plethora of engine fittings. The Type 504K model represented the two-seat version while the 504C was a specialized anti-Zeppelin gunnery platform. The addition of float components in place of the traditional undercarriage produced the Type 504L floatplane while the Type 504M was a transport-minded development. By the end of the war, the series was still in serial production, such was its importance to the British war effort, and would see nearly 600 more units added to the existing grand total of 10,000+ between the years of 1925 and 1932. Newer mounts were designated Type 504N and were of either new-build or conversion measures, the latter pulled form existing stocks of Type 504 aeroplanes. For the British, Type 504s would eventually be superceded by the Avro "Tutor" biplane series in the same training role.

In the end, the remarkable Type 504 series would become one of the most impressive and respected aircraft of its generation. Many-a-military pilot certainly "owed his wings" to having trained on the platform at one point or another and many more civilian pilots would join them throughout the post-war period. The Type 504 would become a mainstay of the famous "Barnstorming" touring groups of the 1920s-1930s as well as going on to become prized collector pieces for avid flyers able to afford the type.©MilitaryFactory.com

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Specifications

Service Year

1913

Origin

United Kingdom

Status

RETIRED
Not in Service.

Crew

2

Production

11,303
UNITS

Avro (A.V. Roe) - UK

(View other Aviaton-Related Manufacturers)

Argentina; Australia; Belgium; Bolivia; Brazil; Canada; Chile; China; Denmark; Estonia; Finland; Greece; Guatemala; India; Iran; Ireland; Japan; Latvia; Malay; Mexico; Mongolia; Netherlands; New Zealand; Norway; Peru; Poland; Portugal; Imperial Russia; South Africa; Soviet Union; Spain; Sweden; Switzerland; Taiwan; Thailand (Siam); Turkey; United Kingdom; United States; Uruguay

(OPERATORS list includes past, present, and future operators when applicable)

✓ Air-to-Air Combat, Fighter
General ability to actively engage other aircraft of similar form and function, typically through guns, missiles, and/or aerial rockets.

✓ Ground Attack (Bombing, Strafing)
Ability to conduct aerial bombing of ground targets by way of (but not limited to) guns, bombs, missiles, rockets, and the like.

✓ Intelligence-Surveillance-Reconnaissance (ISR), Scout
Surveil ground targets / target areas to assess environmental threat levels, enemy strength, or enemy movement.

✓ Training (General)
Developed ability to be used as a dedicated trainer for student pilots (typically under the supervision of an instructor).

Length

29.4 ft
(8.95 m)

Width/Span

35.9 ft
(10.95 m)

Height

10.5 ft
(3.20 m)

Empty Wgt

1,235 lb
(560 kg)

MTOW

1,830 lb
(830 kg)

Wgt Diff

+595 lb
(+270 kg)

(Showcased structural values pertain to the Avro Type 504K production variant)

Installed: 1 x Le Rhone 9J air-cooled rotary engine developing 110 horsepower driving a two-bladed propeller unit at the nose.

Max Speed

90 mph
(145 kph | 78 kts)

Ceiling

15,994 ft
(4,875 m | 3 mi)

Range

249 mi
(400 km | 741 nm)

Rate-of-Climb

700 ft/min
(213 m/min)

♦ MACH Regime (Sonic)

Sub

Trans

Super

Hyper

HiHyper

ReEntry

♦

(Showcased performance specifications pertain to the Avro Type 504K 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)

STANDARD (VARIABLE):
1 x 0.303" (7.7mm) Lewis Machine Gun on trainable mounting at rear cockpit.
1 x 0.303" (7.7mm) Lewis Machine Gun in fixed, forward-firing mounting over the upper wing member (single-seat / nigh-fighter variants).

Supported Types

Graphical image of an aircraft medium machine gun

(Not all ordnance types may be represented in the showcase above)

Hardpoint Mountings: 0

Type 504 - Initial Production Model developed from the Type 500 basic trainer; powered by a Gnome Monosoupape rotary engine generating 80 horsepower.

Type 504A - Featured smaller ailerons; powered by a Gnome Monosoupape rotary engine generating 80hp.

Type 504B - Featured larger dorsal fin; powered by a Gnome Monosoupape rotary engine generating 80hp.

Type 504C - "Anti-Zeppelin" single seat fighter; powered by a Gnome Monosoupape rotary engine generating 80hp.

Type 504D - Powered by a Gnome Monosoupape rotary engine generating 80hp.

Type 504E - Re-engineered wings; powered by a Gnome Monosoupape rotary engine generating 100hp.

Type 504J - Powered by a Gnome Monosoupape rotary engine generating 100hp.

Type 504K - Standard RAF Two-Seat Trainer Model; universal engine mounting (inline, radial or rotary types).

Type 504L - Floatplane Derivative

Type 504M - Cabin Transport Aircraft

Type 504N - Post-War Conversion Models featuring subtle modifications and redesigns to structure and landing systems; fitted with Armstrong Siddeley Lynx IV radial engines.

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