234
14 CFR Ch. I (1–1–14 Edition)
Pt. 60, App. C
T
ABLE
C2A—F
ULL
F
LIGHT
S
IMULATOR
(FFS) O
BJECTIVE
T
ESTS
—Continued
QPS requirements
Information
Test
Tolerance(s)
Flight condition
Test details
Simulator
level
Notes
Entry No.
Title
B C
D
3.f.1.
...........
Vibrations—to include 1/Rev
and n/Rev vibrations
(where ‘‘n’’ is the number
of main rotor blades).
+3db to
¥
6db or
±
10% of
nominal vibration level in
flight cruise and correct
trend (see comment).
(a) On ground (idle);
(b) In flight
Characteristic vibrations in-
clude those that result from
operation of the helicopter
(for example, high air-
speed, retreating blade
stall, extended landing
gear, vortex ring or settling
with power) in so far as vi-
bration marks an event or
helicopter state, which can
be sensed in the flight
deck.
[See Table C1A, table entries
5.e. and 5.f.]
X
Correct trend refers to a com-
parison of vibration ampli-
tudes between different
maneuvers; e.g., if the 1/
rev vibration amplitude in
the helicopter is higher dur-
ing steady state turns than
in level flight this increasing
trend should be dem-
onstrated in the simulator.
Additional examples of vi-
brations may include:
(a) Low & High speed transi-
tion to and from hover;
(b) Level flight;
(c) Climb and descent (in-
cluding vertical climb;
(d) Auto-rotation;
(e) Steady Turns.
3.f.2.
...........
Buffet—Test against recorded
results for characteristic
buffet motion that can be
sensed in the flight deck.
+3db to
¥
6db or
±
10% of
nominal vibration level in
flight cruise and correct
trend (see comment).
On ground and in flight.
Characteristic buffets include
those that result from oper-
ation of the helicopter (for
example, high airspeed, re-
treating blade stall, ex-
tended landing gear, vortex
ring or settling with power)
in so far as a buffet marks
an event or helicopter
state, which can be sensed
in the flight deck.
[See Table C1A, table entries
5.e. and 5.f.]
X
The recorded test results for
characteristic buffets
should allow the checking
of relative amplitude for dif-
ferent frequencies.
For atmospheric disturbance,
general purpose models
are acceptable which ap-
proximate demonstrable
flight test data.
4. Visual System
4.a.
.............
Visual System Response Time: (Choose either test 4.a.1. or 4.a.2. to satisfy test 4.a., Visual System Response
Time Test. This test is also sufficient for motion system re-
sponse timing and flight deck instrument response timing.)
4.a.1.
..........
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