Cruise Climb - Rotax CESSNA 150 Manual

Converted with kit
NS402S with ROTAX 912 S3 and
HOFFMANN HO-V352F/170FQ+10
WING FLAP SETTINGS
Normal take-offs are accomplished with wing flaps retracted. Using 10° wing flaps reduces the
total distance over an obstacle by approximately 10%. This advantage is however lost in total
climb gradient after 15 m obstacle has been cleared. For this reason 10°-flap setting is to be
used only for minimum takeoff runs, soft- or uneven fields without obstacles ahead
If 10° wing flaps are used for take-off from uneven or soft fields wing flaps should be left down
until all obstacles are cleared. Exception for this rule would be a take-off with hot weather and
high pressure altitude where use of 10° wing flap setting would be critical where 10° wing flap
setting is not recommended for take-offs
CRUISE PERFORMANCE
Takeoff distances for different weights, headwinds and pressure altitudes are found in Table
Takeoff distances Section V
TAKE OFF WITH SIDEWIND
Take-offs into strong crosswinds normally are performed with the minimum flap setting
necessary for the field length, to minimize the drift angle immediately after takeoff. The
airplane is accelerated to a speed slightly higher than normal, then pulled off abruptly to
prevent possible settling back to the runway while drifting. When clear of the ground, make a
coordinated turn into the wind to correct for drift.

CRUISE CLIMB

CLIMB PERFORMANCE
For detailed data, see the table "Maximum climb rate" in Section V.
CLIMB SPEEDS
Normal climbs are performed for best engine cooling with 75-80mph (65-70kts) with retracted
flaps and full throttle. Airspeeds for achieving the best climb rate are in the range of 67mph
(58kts) at sea level and 63mph (55kts) at altitudes above 7500ft. If an obstacle requires a
steeper climb angle, it is recommended to climb with 63mph (55kts) and retracted flaps.
Note
Due to engine cooling steep climbs with low airspeeds should be kept in short
term only
Airplane Flight
Manual Cessna F150L
Nr. 160
4-10
Page:
Revision 1