kpayne on VMOFRWIN702 with $$_JOB

VerDate Sep<11>2014
Cruise Augmentation On and
Off.

For periodic responses,
record results for three full
cycles (6 overshoots after
input completed) or that
sufficient to determine time
to 1-2 or double amplitude,
whichever is less.
The test may be terminated
prior to 20 sec. if the test
pilot determines that the results are becoming uncontrollably divergent.

X

X

X

The response may be
unrepeatable throughout
the stated time for certain
helicopters. In these cases,
the test should show at
least that a divergence is
identifiable. For example:
Displacing the cyclic for a
given time normally excites
this test or until a given
pitch attitude is achieved
and then return the cyclic
to the original position. For
non-periodic responses, results should show the
same convergent or divergent character as the flight
test data.

2.c.3.b. ........

Short-Term Response.

Section1.5Section Pitch or Section2Section/sec. Pitch
Rate. Section0.1 g Normal Acceleration.

Cruise or Climb. Augmentation On and Off.

Record results for at least
two airspeeds.

X

X

X

A control doublet inserted at
the natural frequency of the
aircraft normally excites
this test. However, while
input doublets are preferred over pulse inputs for
Augmentation-Off tests, for
Augmentation-On tests,
when the short-term response exhibits 1st-order
or deadbeat characteristics,
longitudinal pulse inputs
may produce a more coherent response.

2.c.4. ...........

Maneuvering Stability.

Longitudinal Control Position - Section10% of change from
trim or Section0.25 in. (6.3 mm)
or Longitudinal Control
Forces - Section0.5 lb. (0.223
daN) or Section10%.

Cruise or Climb. Augmentation On and Off.

Record results for at least
two airspeeds at 30Section-45Section
roll angle. The force may
be shown as a cross plot
for irreversible systems.
May be a series of snapshot tests.

X

X

X

2.d. .............

Lateral and Directional Handling Qualities

2.d.1. ..........

Control Response

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Pt. 60, App. C

Section10% of calculated period,
Section10% of time to 1-2 or double amplitude, or Section0.02 of
damping ratio.For non-periodic responses, the time
history must be matched
within Section3Section pitch; and Section5 kts
airspeed over a 20 sec period following release of the
controls.

Jkt 247047

Long-Term Response.

Federal Aviation Administration, DOT

16:30 Jun 25, 2019

2.c.3.a. ........