Calidus
SYSTEM DESCRIPTION
AutoGyro_POH_Calidus Revision 4.0 – Issue Date 17.JAN.2019 7-7
A three-bladed, fixed pitch propeller with aluminium hub is used as standard version. The
propeller blades are made from composite material with a foam core. As an option a
variable pitch propeller is available which is described in SECTION 9 of this manual.
7.8 Rotor System
The two-bladed, semi-rigid, teetering rotor system comprises high-strength aluminium
extruded rotor blades, a hub bar, and a common teeter hinge assembly.
The rotor blades feature an aerodynamic profile especially suitable for rotorcraft which, in
combination with its relative centre of gravity, provides aerodynamic stability by eliminating
negative blade pitching moments and flutter tendency. The hollow blade profile is sealed at
both ends by plastic blade caps.
The aluminium rotor hub bar is pre-coned to the natural coning angle of the blades and
connects the blades firmly to each side using 6 fitting bolts and a clamping profile. In order
to compensate for asymmetric air flow in forward flight the blades are free to teeter. The
hinge assembly consists of teeter tower, teeter bolt and teeter block.
The teeter bolt runs in a long Teflon coated bushing in the teeter block (main bearing
action), as well as two shorter bushings in the teeter tower (emergency bearing action). The
main bearing action is supported by special grease which is applied through a grease nipple
on top of the teeter block. Servicing is described in SECTION 8 of this manual.
Three generations of rotor and rotorhead are in service on Calidus.
1. Orange end cap rotorsystem I and short teeter tower, from first build. Stainless
steel rotorbridge.
2. RotorSystem II with ‘tall’ teeter tower. Same rotorhead construction.
3. RotorSystem II with Rotorhead III. Released in 2018. Characterised by a short
teeter tower and teeter block (the rest of the rotorsystem is RSII), and totally new
rotorhead construction. Permits pre-rotation up to 320rpm.
View of Rotorsystem I rotor assy and installed in rotorhead
To Next Page
Loading...