P.Hare Royal Aircraft Factory (Putnam)
Designed during 1917 and probably intended for ground attack, the Armoured Experimental No 2 was to have been a tractor biplane with an armour plated forward fuselage intended to afford the crew, engine and fuel tanks a measure of protection against retaliatory small-arms fire. It is believed it had been based upon the B.E. series of machines, but it is almost certain that the project never progressed beyond the initial stages of design, for no records exist of it having been built, and no drawings of it survive.
Wingspan: 42ft 7in
This armoured two-seater, which was almost certainly the last aeroplane to be designed at Farnborough, has the obscure distinction of being the only Royal Aircraft Factory type to bear an official name. Under the system of nomenclature which was adopted by the Royal Air Force towards the end of the war it became the Farnborough Ram.
Intended primarily for ground attack, the A.E.3 was a pusher biplane developed from the N.E.I, with which it shared its undercarriage, outer wing panels and horizontal tail surfaces. Its nacelle, containing the crew and engine, was protected by steel armour plate, the floor having two skins, the inner being 5 gauge and the outer 10 gauge. The armament comprised three Lewis guns, two firing forward and a third on a telescopic mounting for defence against attack from behind. The forward-firing pair were coupled together and aimed with the aid of an Aldis optical sight mounted between them. Provision was made for no fewer than thirty-two double Lewis drums, each holding ninety-seven rounds, giving the crew what was, at that time, an immense store of ammunition.
It was originally intended that the A.E.3 should be powered by the geared 200hp Hispano-Suiza, but, owing to the almost unending delivery problems with that engine, the first prototype, B8781, which was completed on 28 March 1918, was equipped with a Sunbeam Arab of similar power. The radiator was initially installed between the rear centre-section struts, but was soon repositioned above the centre-section, alongside the overwing gravity tank.
A second example, B8783, had its nacelle modified to accommodate a 230hp Bentley B.R.2 rotary engine. Designated Ram II, it was completed by the end of May. The third machine, B8782, another Arab powered Ram I, was completed a few days later.
The flight trials of B8783, which began on 4 June, revealed that the control response was barely adequate, and by the 30th, when the machine went to France for service trials, the rudder and ailerons had been replaced by surfaces of increased area. The aircraft was tested by crews from both 201 and 209 squadrons before returning to Farnborough on 20 July. At the same time B8781 underwent armament trials at the testing station at Orfordness.
In common with many of the Factory's less-inspired designs, the A.E.3 found little favour with its intended users, service reports being best described as 'unenthusiastic'. No production orders were placed, especially as its intended role would clearly be better filled by more conventional designs such as the Sopwith Salamander.
The design of a further version, the Ram III with wings of increased chord, for which the more plentiful 150hp B.R.I had been suggested as a powerplant, was not completed.
span 47ft 10in; length 27ft 9in; height 10ft 0in; chord 6ft 0in; gap 5ft 6in; wing area 560sq ft; dihedral 5°.
maximum speed 95mph (estimated).
H.King Armament of British Aircraft (Putnam)
Royal Aircraft Factory
A.E.3 (Ram). Among the unusual features of this two-seat armoured ground-attack aircraft of 1918 was the use (or evident intended use) of a tubular optical sight in conjunction with the primary armament of two Lewis guns. This installation was probably devised at Farnborough, although, as will be noted in Volume 2, A. C. W. Aldis designed a gun mounting with which an Aldis sight was used. The guns were yoked together in the extreme nose of the nacelle and the sight was mounted between and above them. Vertical downward fire was possible, though field of fire was limited, and the provision of thirty-two double drums of ammunition was specified. These would be shared by a third Lewis gun on a pillar mounting, for rearward fire above the top wing. The pillar was apparently capable of transverse movement, as on the first Sopwith Buffalo.
The armoured nacelle of the A.E.3 was of structural type, as were the forward fuselage sections of the Sopwith Salamander and Buffalo. The floor and front were of double thickness (10-gauge outer, 5-gauge inner).
W.Green, G.Swanborough The Complete Book of Fighters
ROYAL AIRCRAFT FACTORY A.E.3 RAM UK
The last aircraft type to emerge from the Royal Aircraft Factory at Farnborough, before its change of name in June 1918 to Royal Aircraft Establishment, the A.E.3 was itself an extrapolation from the N.E.1 (which see). Designated as an "Armoured Experimental" type, the A.E.1 was intended as a specialised ground-attack fighter, for which purpose it was to mount a pair of 0.303-in (7,7-mm) Lewis guns in the nose, with a limited degree of movement in azimuth and depression. A third Lewis was to be pillar-mounted in the front, observer’s, cockpit for self-defence. Like the N.E.1, the A.E.3 was a large three-bay equi-span biplane, differing principally in the construction and shape of the nacelle, which was armoured with steel plate and provided stowage for 32 ammunition drums. Intended to be powered by the 200 hp Hispano engine as used in the N.E.1, the A.E.3 prototype emerged at the end of March 1918 with a 200 hp Sunbeam Arab, whilst the second, eight weeks later, had a 230 hp Bentley B.R.2 rotary. Flight testing of the latter began on 4 June, and larger ailerons and rudders were fitted before this A.E.3 went to France for service trials, which aroused little enthusiasm. The third aircraft, also completed in June 1918, had an Arab engine like the first and in this form the A.E.3 was named the Ram I, whilst the B.R.2 version became the Ram II. A proposed derivative, the Ram III, was not built and no production ensued, other, better, types having become available . The following speed is estimated with a 200 hp Hispano engine.
Max speed, 95 mph (153 km/h).
Span, 47 ft 10 1/2 in (14,59m).
Length, 27 ft 8 1/2 in (8,44 m).
Height, 10 ft 0 in (3,05 m).
Wing area, 560 sq ft (52,02 m2).