Pilot Operating Handbook
Cavalon
SECTION 6
WEIGHT AND BALANCE
AutoGyro_POH_Cavalon 915iS
Revision 1.0 – Issue Date 08.MAY.2019
5-3
5.4
Speeds
The following speeds are relevant for flight performance. For additional speed limitations
refer to SECTION 2 LIMITATIONS of this manual.
Vmin, TOP * 560Kg TOW ................................... 20 km/h (25mph, 20KIAS) IAS
Speed for best angle of climb V
X
....................... 100 km/h (60mph, 50KIAS) IAS
Speed for best rate of climb or maximum endurance V
Y
112 km/h (70mph, 60KIAS)
IAS
Best range speed............................................... 110 km/h (70mph, 60KIAS)IAS
Long range speed** .......................................... 120 km/h (75mph, 65KIAS) IAS
Approach speed***............................................ 100 km/h (60mph, 50KIAS) IAS
Vmc power-off**** ............................................... 32 km/h (20mph, 15KIAS) IAS
Vmc power on**** .....................................................0 km/h (0mph, 0KIAS) IAS
WARNING
* Take care! A full power operation at Vmin with a Rotax 915iS engine will result
in a very high nose-up attitude with little forward visibility, and very little
airspeed. Airspeed indication below 25km/h (20mph, 15KIAS) is unreliable.
Further, rotor rpm will be reduced due to the aircraft being partially supported
on engine thrust.
ROTOR RPM MUST BE MAINTAINED ABOVE 280!
Take great care, especially when flying at light weight, to maintain rotor rpm.
** Long range speed is the speed faster than the best range speed which
results in a slightly lesser range but represents a good compromise between
range and saved air time.
*** Approach speed above 100kmh (60mph, 50KIAS) builds energy in the
rotor that results in a long floating landing. Approach speed at 80kmh
(50mph, 40KIAS) results in a very short landing roll, and below 80kmh
requires increasing skill especially at maxTOW.
****Vmc is the minimum controllability speed. At 30kmh (20mph, 15KIAS) or
below, engine off, rudder authority reduces, to negligible below 15kmh
(10mph, 8KIAS).
TOP is Take Off Power.
5.5
Rate of Climb
1
Rate of climb, 560 kg, V
Y
, TOP ............................................. 5.0 m/s (1000fpm)
5.6
Take-off and Landing Data
1
Rate of Climb values were identified within noise measurement according to German regulations and
may differ from the listed values depending on engine and propeller type.