Hawker 850XP Pro Line 21 Airplane Flight Manual
Page 4
FAA Approved
Original Issue: Feb 28, 2006
Sub-section - 5.25
NET TAKE-OFF FLIGHT PATH
Third Segment
During this segment the airplane accelerates in level flight from V
2
to final take-off climb speed
on maximum thrust. The height may be 1500 feet or some lower height. If take-off was with
flaps 15°, flaps are selected up at V
2
+ 10 knots.
Fourth Segment
During this segment the airplane completes the climb to 1500 feet in those cases where
acceleration took place at a lower height.
Fifth Segment
The airplane is accelerated from V
FTO
to V
ERC
during this segment.
PRESENTATION
The net take-off flight path consists of up to five segments, the information being presented on
two charts for each flap setting to the end of the fourth segment, plus a further chart
independent of flap setting which enables the fifth segment to be calculated.
Because the first segment climb gradient will always be better than the second segment
gradient, the first segment performance of the flight path is not given but the second segment
is assumed to commence at 35 feet and the landing gear retraction complete point is ignored.
The construction is based on the assumption that the airplane is flown in the following manner:
• Engine failure occurs at V
1
, and APR thrust is automatically applied.
• Landing gear is selected up immediately after lift-off. At the end of the take-off distance -
where the net flight path begins - the landing gear is still retracting. The speed is V
2
appropriate to the flap setting.
• The climb is continued at V
2
and take-off thrust until 3
1
/
2
minutes have elapsed from the start
of take-off or until the airplane reaches 1500 feet, whichever occurs first.
• From this point the airplane is accelerated in level flight to the final take-off climb speed, V
FTO
(Figure 5.10.1). If take-off was with flaps 15° then they are selected up during the
acceleration at V
2
+ 10 knots or at V
FTO
whichever is lower.
• When the flaps have been retracted and the final take-off climb speed achieved, the climb is
continued if necessary to 1500 feet.
• APR is cancelled and thrust reduced to maximum continuous at the five minute point. Finally
the airplane is accelerated to the en-route climb speed.
For Training Purposes Only