Helikopterfaglig Forum ble etablert av Justisdepartmentet i oktober 2002, og leverte sin innstilling den 13. juni 2003. Mandatet var ikke å peke på en spesiell helikoptertype som den best egnede, men det vart ganske klart gjennom prosessen, at den typen som imponerte oss mest, var AW101. Vår jobb var kun å foreslå veien videre, og det var at hele prosessen måtte ut på anbud. Luftforsvaret kjempet innbitt for NH90 som de hadde 10 opsjoner på, men innstillingen var enstemmig: Anbud. Vi satte bl.a. følgende krav vedr kapasitet og rekkevidde. Bør 1 krav om kapasitet til å løfte 25 overlevende 300NM fra utgangspunktet. Dernest et Bør 2 krav at helikopteret skulle kunne nå det ytterste punkt i vårt redningsanvarsområde, altså 385NM, for der å heise opp 10 nødstedte, eksempelvis en P-3 Orion besetning. Forsvaret hadde en tung fot innenfor den videre prosessen, og mye militært utstyr er lastet inn i maskinen, slik at kravet nå er 25 nødstedte på 150NM, altså veldig langt unna det vi så som en reell mulighet i 2002. Husk at tjenesten er sivil, men opereres av Forsvaret. Forsvaret burde hatt sine egne Combat SAR (CSAR) maskiner slik at tjenesten kunne greid Bør 1 kravene satt for nesten 20 år siden. Politikerne er helt uten forstand i saken. Det å diskutere en rendyrket, sivil redningstjeneste, er helt håpløst. (Red.)
AW101 SAR Queen: The Squadron viewpoint
The
AW101 SAR Queen is transforming the All-Weather Search and Rescue (SAR)
capability of the Royal Norwegian Air Force. Operating in some of the most
demanding conditions anywhere in the world, the helicopters cover thousands of
miles of coastline, fly inside the Arctic Circle and are often faced with rough
seas and extreme low temperatures.
The 330 Squadron, based at Sola, has been operating the first six
SAR Queen aircraft since September 2020. One member of the Squadron with vast
experience on the Sea King provides first-hand insight into how the AW101 is
taking SAR capability to a new level.
I have
almost 30 years of SAR experience with the Sea King. Having flown the AW101 for
the last two and a half years, including the last six months in the SAR role at
Sola, I would argue that the helicopter improves SAR operations in every
aspect. We all loved the Sea King, but we would never go back because the AW101
is like skipping at least three generations of aircraft development.
In general, it is a superb helicopter for SAR operations. Even in
the short period of time we have operated the aircraft so far, we’ve been able
to conduct missions more efficiently and with less risk for the crews.
In our role, where we fly in challenging conditions and in close proximity to mountains and other terrain, you must be able to trust the equipment, and the AW101 gives us that trust.
The two most important capabilities in SAR operations are the
ability to find what you are looking for effectively and maintaining
situational awareness. The AW101 enables us to do both.
The helicopter reduces crew workload, which means we can
concentrate on flying the mission. The combination of the Osprey radar, mapping
and sensors gives us a complete picture of where we are at all times. That
should never be underestimated because it is what keeps you safe.
Enhanced performance
The AW101 has improved almost every aspect of Search and Rescue compared with
the Sea King. In normal helicopter altitudes below 2,000 feet, the AW101 is 20
kts faster in normal cruising speed and probably around 30 kts when using
maximum speed. The speed advantage increases further at altitudes above 2,000
feet, which is a big advantage in the mountainous terrain of Norway.
At Sola, the standard fuel on duty aircraft is 2,300 kg, which
gives us about 2.5 hours endurance. The main reason for this low fuel state at
Sola is because we fly frequent missions in mountainous terrain up to 4-5,000
feet within 10 to 15 minutes’ flying time from the base.
Weight and power margins will always be an issue in mountainous
operations. Standard weight including SAR equipment and fuel is 14,500 kg. With
a maximum allowed all-up weight (AUW) of 15,600 kg, we can carry 3,400 kg of
fuel with standard SAR equipment on board. This gives us a range of 450
nautical miles compared with 400 nautical miles on the Sea King.
The SAR equipment carried on board enables us to operate safely in
all the different environments, including rough sea hoisting, mountain rescue,
waterfalls, glaciers and more. When casualties are on board, the medics have
the essential equipment of a hospital emergency room to treat the patients in
flight.
“The
AW101 is like skipping at least three generations of aircraft development.”
AW101 features that improve SAR
operations
Autopilot
The fully certified digital autopilot connected to the flight
management system (FMS) and the area navigation (RNAV) capability reduce pilot
workload in the air.
The autopilot enhances safety when performing offshore operations
to ships in marginal weather conditions. The aircraft is fully capable to fly
itself into hover position alongside a ship without pilot intervention. Without
visual cues for the pilot to approach a ship, the autopilot is of great help.
Hoisting operations are generally easier and safer with the
autopilot in the AW101. The WTR mode and height hold via GPS and IRS is
important and reduces pilot workload. Together with the three engines, the crew
generally feels safer when executing hoisting operations.
One of the first missions with the AW101 was to rescue four
climbers stuck on a mountainside at night. Low clouds made the transit into the
area difficult. By using the full capacity of the navigation systems, digital
maps, radar and autopilot, we managed to make a safe transit from above the
clouds to survivors. The hoisting operation was conducted almost without pilot
intervention on the controls because of the accuracy of the hover mode under
prevailing wind conditions (calm winds).
“One of
the first missions with the AW101 was to rescue four climbers stuck on a
mountainside at night.”
Osprey radar
The Osprey radar plays a crucial role in our operations, allowing
us to search for and identify small targets over a very wide search area. It
effectively gives us two integrated pictures at the same time because we are
able to operate two modes simultaneously. This means we can maintain
situational awareness while conducting maritime surveillance. It’s a great
capability to have.
Having the radar antennas mounted as panels on the side, instead
of underneath the fuselage as most 360 radars would be, is a great advantage
when landing in confined areas.
For all practical purposes we use three of the modes at this
stage: the maritime surveillance (MS), short range awareness (SRA) and small
target modes (STM).
MS is used for navigation in open water and when searching for
larger targets. SRA is used for coastal and fjord navigation, and search
operations. In calm seas, this is a good mode for searching as well, especially
when visibility is poor. We use STM for searches when weather is such that we
have clouds and difficult visibility conditions to visually avoid conflict with
terrain and obstacles.
Rotor de-ice
Thanks to the autopilot with the rotor de-ice capability, we can
proceed more directly to incident scenes. While the Sea King always needed an
escape route at low level, the autopilot in the AW101, together with rotor
de-ice, enables the helicopter to recover by climbing to safe altitude. This
was rarely an option for the Sea King.
The de-ice capability enables the AW101 to conduct electronic
searches even in clouds and poor weather using the mobile phone detection and
location system (MPDLS) or Osprey radar.
Digital map with overlays
The digital moving map on board provides excellent situational
awareness. With the several possibilities with overlays and screen set up, the
pilots have an easy job orientating themselves, even in poor weather and low
visibility conditions.
The feature of displaying the Osprey radar picture as an overlay
on the DMAP is helpful during fjord navigation. Together with the 1600 radar
and terrain awareness and warning system (TAWS), the crews are informed of any
terrain, obstacle or other things that may be a conflict during low-level
navigation, even if one system fails. The automatic identification system (AIS)
as an overlay also helps situational awareness regarding surface targets
onshore and offshore.
Avionics and mission suite
Both the navigator and one of the pilots can see the same picture
on the screen, which makes it easier to discuss tactics and strategies during
SAR operations. The AMMC integration, giving only one pilot the opportunity to
see DMAP or RADAR, is however a limitation.
To simplify navigation and positional awareness, the avionic
systems on board are quite helpful during search missions. The electro-optical
sensor system (EOSS) has already proven efficient during searches. An AW101
crew was able to spot and locate a missing person after the police had used a
drone to search for quite some time, concluding that the person probably was
not in the search area.
The AW101 used the EOSS
for about 15 minutes and found the missing person well within the search area.
The laser integrated in the avionics suite is also helpful in keeping targets
on the screen, and the pilots can see where the EOSS is pointing constantly. Being
able to slave the TRAKKA searchlight to the EOSS is also a helpful tool to
identify possible targets at night.
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