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better opportunities as a reason for
moving on—well, not more than
once early on in your career, anyway.
Don't even think of mentioning
personality clashes or "philosophical
differences" as they are more politely
known (unless you want to be a trial
lawyer!). Oh yes, and DO NOT
TELL LIES.
Finally, when asked to do an
evaluation ride, don't push off
afterwards without helping to put
the machine away, or at least
offering to help.
140 The Helicopter Pilot’s Handbook
Notes
The Bell 206
The Bell 206 is powered by a turbine
engine and carries 5 people
(including the pilot) at approximately
100 kts cruise in day or night VFR
non-icing conditions. The 206L
(LongRanger), is a stretched version
with two extra rear-facing seats that
can easily do 120 kts (it can also have
an IFR fit that includes an autopilot,
which is not useable in some
countries). All doors can be
removed, but there are speed and C
of G restrictions if they are.
What came to be known as the A
model (206) was originally designed
in April 1965, with the first flight
taking place on 10th January 1966. By
January 1967 it was in full
production and had sold over 7500
by 1989, rightly claiming to be the
most popular light turbine helicopter
in history, having done millions of
flight hours. In fact, the 206 is
officially the safest single-engined
aircraft, including fixed wing,
according to NTSB statistics.
Various non-standard versions have
appeared from time to time—for
example, the US Army and Navy
had their own, as did the Australian
Army. The JetRanger II (206B) came
on the scene in 1972, and the III not
long after. The 206L came last. In
practical terms, the 206 is roughly
equivalent to a Chevy truck, in that it
does lots of things fairly well, but
there are better machines for specific
tasks, mainly because any
improvements made over the years
have not included the payload –
there’s about 300 lbs less available
now than originally (well, you can't
do much else with the rotor system).
Thus, there are advantages to
choosing older models; for example,
the engine start cycles aren't limited
on a 206A, which makes it ideal for
situations where you might want to
start the engine often. It also uses
less fuel, but may have less Max All
Up Weight.
The MAUW of the B and up is 3200
lbs, which is considerably lighter
than the average quality car, and a
typical APS (Aircraft Prepared for
Service) weight is about 2000 lbs, so
you have slightly more than 1000 lbs
for fuel and passengers, and 150 lbs
more if you use the hook, so, on full
tanks, you can get three average male
passengers in and fly them around
142 The Helicopter Pilot’s Handbook
for about 2 hours. With the range
extender fitted, you lose a passenger
but get an extra half hours'
endurance. To use the rear seats for
cargo, just remove the cushions.
The ambulance version can hold two
stretchers through a special large
door, and there are Electronic News
Gathering (ENG) variations as well,
but these require special
modifications to the airframe.
Behind the passenger compartment,
on the left of the fuselage, is a 16
cubic foot baggage compartment.
The maximum weight allowed in
there is 250 lbs.
The LongRanger
This came in several versions:
·  206L – this had the same engine
as the Jetranger. Some had a
water-methanol system to cool
the TOT at critical moments.
·  206L-1 - engine upgraded to a
500 hp Allison C28B. As only
500 were made, however, many
have been converted to L-3s.
·  206L-3 - another engine
upgrade to the 650 hp C30P.
·  206L-4 - still the C30P, with a
transmission that can cope with
another 55 hp.
There is generally no difference in
flying characteristics (except that the
L is more comfortable because of its
nodamatic suspension) but, on the
ground, certain wind azimuths can
cause a noticeable ground bounce,
particularly at idle. A slight raising of
the collective and better centering of
the cyclic often reduces it.
The vibration levels are extremely
low throughout all flight regimes in
any configuration. The tail rotor
pedals have more free-play in their
travel and you almost have to
anticipate pedal input to keep it
pointed straight on final.
　
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本文鏈接地址：The Helicopter Pilot’s Handbook(94)