| The
revolutionary feature of this new helicopter was its powerplant, consisting
of two turboshaft engines mounted side-by-side and driving, via a combining
gearbox, a single output shaft. Besides more power there was another very
considerable advantage of the twin turbines, in the event of a failure
of one of the two turbines, sensing torquemeters in the combining gearbox
signal the remaining turbine to develop power for emergency or continuous
operation. UH-1N deliveries for the US Navy and Marine Corps began in 1971.
The enhanced safety of the helicopter offered by the Twin-Pac powerplant
has resulted in many sales to operators who provide support to offshore
gas/oil prospecting and production companies, as well as to air taxi organizations.
The UH-1N is powered by one Pratt & Whitney Aircraft of Canada PT6T-3
Turbo Twin-Pac coupled turboshaft, flat rated to 1,290 shp for takeoff
and to 1,130 shp for continuous operation. The UH-1N has a maximum cruising
speed of 143 mph at sea level, service ceiling of 14,200 feet, and a range
with standard fuel at sea level with no reserves of 261 miles. |
All helicopter models are Hand Carved, Hand Painted
Mahogany and come fully assembled with removable desk stand. |