Tests conducted in the USA led the British Admiralty to
adopt the Davis recoilless gun for the RNAS, several
types of aircraft being designed around this immense
weapon, essentially for the anti-Zeppelin role. Among
these was the Robey Peters R.R.F.25, designed by J A
Peters for Robey & Company. Powered by a 250hp
Rolls-Royce 12-cylinder Vee-type water-cooled engine
(later to be named Eagle), the R.R.F.25 was an unequal-span
two-bay biplane with a crew of three comprising a
pilot and two gunners. The pilot was accommodated
far aft, immediately ahead of the vertical tail, and the
gunners occupied nacelles suspended beneath the
upper wing. The port nacelle accommodated a 7.7mm Lewis gun and the starboard nacelle housed a
two-pounder version of the Davis gun which exceeded
2.13m in length. Eight shells for the gun were fitted
into the nacelle and two more in the adjacent wing.
Two prototypes were ordered, the first of these flying in
September 1916. It suffered minor damage as a result of
turning over during the take-off run for what was to have been its second flight, and when it did succeed in
getting airborne once more a fire at low altitude resulted
in a crash in which it was destroyed. The second
prototype, referred to as the Mk II, featured a new equispan
three-bay wing cellule, introduced a fixed tail fin,
and side windows were added for the pilot. Overall
span was reduced by 61cm and wing area was increased
by 5.89m2. It was intended that a
Davis gun be carried in each nacelle. This aircraft was,
in fact, cancelled by the Admiralty, but was completed
nonetheless in January 1917 and flown during the
course of the month. It stalled on take-off, however, and
crashed, further work on the aircraft being finally abandoned.
|A three-view drawing (1278 x 778)|
| Take-off weight||1678 kg||3699 lb|
| Wingspan||16.61 m||55 ft 6 in|
| Length||8.95 m||29 ft 4 in|
| Wing area||44.92 m2||483.51 sq ft|
|Ali Duncan, e-mail, 02.09.2012 17:59|
I hazard the guess that this aircraft was somewhat underpowered.
|juankuan, 18.06.2011 11:32|
It stalled on take-off, however, and crashed, further work on the aircraft being finally abandoned.
|James Bird, e-mail, 30.01.2011 02:09|
I would like to find out more about this plane as J.A. Peters was my grandfather and I am just finding out about him and his many aircraft. He later became a pioneer motor-cycle designer.
Do you have any comments?
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