N
ORMAL
O
PERATING
P
ROCEDURES
R
EVISION
:
-
D
ATE
:
12/29/04
P
AGE
:
25
Copyright
2004 Glasair Aviation, LLC Arlington, Washington All rights reserved
4-9 CRUISE
Hold the plane at the desired altitude, when it is reached, and throttle
back to the desired cruise r.p.m. It takes a little while for the airplane
to adjust to the cruise attitude after climb-out. Use the elevator trim to
trim away stick pressure as the airplane increases in speed. Because of
the wide speed range of the Sportsman, considerable trim change is
required in transitioning from climb to cruise. An airplane in trim is a
much easier airplane to handle.
4-10 CRUISE PERFORMANCE
The following figures are to be used as guides for determining the
desired cruise power settings and speeds. Performance numbers are
the actual data from Glasair Aviation’s prototype Sportsman. The 180
h.p. numbers are for aircraft equipped with Lycoming O-360 engines,
and Hartzell constant-speed propellers. Cruise performance will vary
from plane to plane depending on many factors (such as propeller,
engine horsepower, weight, etc.).
Cruise Speed (75% power @ 8,000 ft., TAS):
180 h.p.................................................................135 kts./155 m.p.h.