 |
Hercules Air-to-Air Refuelling 1982
|
 |
|

|
XV179 In Flight Refuelling probe
|
 |
XV296 at Ascension 1982 |
 |
|
|
Receivers and tankers in service
As
recorded, the Lyneham Transport Wing received its first probed
Hercules on 5th May 1982, by which time No 242 OCU’s
Support Training Squadron had already become involved in
the training of squadron crews for air-to-air refuelling,
after two of its own crews had obtained ratings as refuelling
instructors (AARIs) with the help of RAF Marham's Victors.
The first step was to give training in formation flying -
a discipline to which Hercules pilots had, mostly, become
unfamiliar although they may have had experience on smaller,
faster aircraft during previous postings. For refuelling
contacts, or "prods", as the probe was offset,
a technique was evolved in which the captain flew the aircraft
into position behind the tanker, guided by the distinctive
white and red markings on the Victor's underside, while the
co-pilot gave final steering commands to the captain to bring
the probe into the drogue. Few difficulties were encountered
by Hercules crews during conversion or subsequently in AAR
operations.
The Hercules is the first propeller-driven aeroplane to
refuel from the Victor tanker - indeed, it is one of the
very few ever adapted for AAR - and as such it posed a few
unusual problems. In particular, the discrepancy between
speeds of the two aircraft made it virtually impossible to
refuel in level flight. Having taken off from Wideawake at
the max overload weight, the Hercules would need to refuel
about four hours into the typical South Atlantic mission,
and again at about eight hours; with full payload and full
fuselage tanks (these cannot be refilled during AAR and are
kept full for the return leg from the Falklands), the best
speed the Hercules could make, at around 23,000 ft (7010
m), was 210 kts (389 km/h), compared with the Victor's 230
knots (426 km/h) minimum. The technique evolved, therefore,
was for the Victor to approach the Hercules from above and
behind, calling on the Hercules to begin to descend when
visual contact was made and at a distance of about one mile
(1,6 km); with the Hercules descending at 500-1,000 ft/min
(2.5 - 5.1 m/sec), the Victor then overtook, usually to starboard,
and the Hercules moved into line astern to pick up the drogue.
A descent rate of 500 ft/min (2,5 m/sec) was then maintained
for about 15 minutes in a typical refuelling, with the speed
between 230 and 240 kts (426-445 km/h). Another, initially
unforeseen, consequence of the Hercules' particular characteristics
led to an interesting moment during one "prod" over
the South Atlantic, when the two aircraft flew into cloud
and the Hercules' de-icing system came on automatically.
As this takes about 15 per cent of engine power, speed was
reduced at once and the aircraft separated unexpectedly,
being re-united only after a search for clearer air.
The bulk of the OCU training for AAR was concentrated in
a 21 day period in late May, with five 4 1/2hr sorties, carrying
two complete crews on each sortie and many prods completed
by each crew. The first Hercules PLR2 had already reached
Wideawake on 12 May 1982, however, and this aircraft, commanded
by Flt Lt Harold Burgoyne, made the first long range air-refuelling
flight by a Hercules into the Total Exclusion Zone on 16th
May 1982. On this mission, 1,000 lb (454 kg) of vital stores
and eight parachutists were dropped to HMS Antelope, the
flight lasting 24 hrs 5 min and covering 6,300 nautical miles
(11670 km).
Flt Lt Burgoyne was one of two pilots attached to No 47
Squadron's Special Forces Flight to have been awarded the
Air Force Cross for their part in these early long-range
missions, the other being Squadron Leader Arthur (Max) Roberts.
The citation refers to Flt Lt Burgoyne having been tasked,
at the outset of "Operation Corporate", with "intensive
training for clandestine operations, for which he was also
required to undertake comprehensive mission planning".
The nature of any such clandestine operations undertaken
by FIt Lt Burgoyne or Sqn Ldr Roberts has not, however, been
revealed. Three members of the former's crew received Queen's
Commendations for Valuable Service in the Air - Flt Lt R
L Rowley, co-pilot, Flt Lt J D Cunningham, navigator and
Flt Lt S E Sloan, air engineer.
|