POH
AQUILA AT01-200C
Section 5
PERFORMANCE
Document Nr.:
Issue:
Supersedes Issue:
Date:
Page:
FM-AT01-1010-106
A.01
--- (first issue)
02.03.2020
5 - 18
We now have all the necessary data to determine the required take-off distances from chart
5.2.5:
Take-off ground roll.........................................210 m
Lift-off speed...................................................50 KIAS
Take-off distance over a 50 ft obstacle...........375 m
Airspeed in 50 ft..............................................57 KIAS
The required take-off distance is less than the available runway length (TODA) of 620m.
CLIMB
Using chart 5.2.6 a best rate-of-climb of 868 ft/min is determined for an aircraft with a take-off
mass of 1632 lbs (740 kg) in 6000 ft at a temperature of 48 °F (9 °C). For the calculation, the
average temperature and the average altitude is used.
Time needed and distance covered as well as fuel consumption for the climb may be calculated
using chart 5.2.7.
Since take-off occurs at an altitude of 1800 ft, the values for climb to this altitude must be
subtracted from the time required, the distance covered and the fuel consumed to the cruise
altitude (9500 ft).
Since the outside air temperature is up to 13°F (7°C) above ISA, the values determined must
be increased by 10% and because of the lower take-off mass decreased by 15%. For our
example, we obtain the following:
Climbing time:....................(13.1 – 2.4)
.
1.1
.
0.85 = 10.0 min = 10‘00“
Climbing distance:.............(15.4 NM – 2.7 NM)
.
1.1
.
0.85 = 11.9 NM
Fuel required:.....................(6.1 ltr – 1.1 ltr)
.
1.1
.
0.85 = 4.7 ltr
(1.61 US gal – 0.29 US gal)
.
1.1
.
0.85 = 1.24 US gal
The reported tailwind component of 10 kts at the cruise altitude also has an effect on the climb.
However, it has no influence on climbing time and fuel consumption.
Since wind speed tends to increase with altitude, we will assume a tail wind of 7 kts for the
entire climb.
During the climb, the tail wind acts on the aircraft for 10 minutes. As a result, we obtain for the
covered distance over the ground during the climb segment:
𝟏𝟏𝟏𝟏
.
𝟗𝟗
𝐍𝐍𝐍𝐍
+
𝟕𝟕
𝐤𝐤𝐤𝐤𝐤𝐤 ∙ 𝟏𝟏𝟏𝟏
𝐦𝐦𝐦𝐦𝐦𝐦
𝟔𝟔𝟏𝟏
𝐦𝐦𝐦𝐦𝐦𝐦
/
𝐡𝐡
=
𝟏𝟏𝟏𝟏
.
𝟏𝟏
𝐍𝐍𝐍𝐍
This result shows that the wind only has a small influence on climbing distance and is only of
importance when large head or tail winds are present or when climbing to high altitudes. In this
example, the wind influence on climbing distance could have been neglected.
