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VSKYLABS Guimbal Cabri G2 Manual

The VSKYLABS Guimbal Cabri G2 Project Manual

Fast-Guide instructions for use with X-Plane 11 flight simulator

Warning:
The following information, data and procedures are not to be used for real-world training and usage. For real world training/usage - the official Guimbal Cabri G2 manuals and supplements must be used.

Project's Highlights:
  • Project under constant development: Development plan and evolution are including EVERY aspect of the project (3D modeling and textures, flight dynamics modeling, fmod sounds, interactivity, systems etc...).
  • Highly engineered, robust helicopter simulation which pushes X-Plane's out-of-the-box features and flight dynamics model to its extent.
  • Highly detailed visualization of the Guimbal Cabri G2 helicopter.
  • Engineered as a 'Native X-Plane aircraft': Maximum X-Plane compatibility without the use of 3rd party plugins or external coding dependencies. 
  • Day/Night VFR instrumentation.
  • Electronic Pilot Monitor (EPM): Simplified yet authentic and effective EPM display.
  • FULL-VR mode feature: Enables to operate and fly the G2 without physical hardware for the pedals. 
  • Built in compatibility with the AviTab plugin for 3D and VR AviTab visualization and interaction.
  • Optional Experimental/LSA grade autopilot included.
  • Perfect for new helicopter pilots and for helicopter conversion for fixed wings aircraft pilots -  due to its docile flying characteristics and simple yet effective design features.
  • Highly responsive support forum.

The VSKYLABS Guimbal Cabri G2 Project was designed to follow as much as possible and practical, the actual flight operations of the real Cabri G2. It is highly recommended to use the original Flight Manual as a reference. However - several differences in aircraft systems/behavior/performance may be noticeable.
  • EPM/MLI - The VSKYLABS Cabri EPM is a simplified version of the real Cabri EPM. Not all the MLI modes of operations are covered. The reason for this is that the VSKYLABS Cabri is engineered as a 'native X-Plane' aircraft, utilizing X-Plane's out-of-the-box features and systems. The Cabri's EPM is a specific avionics system which is not included in X-Plane. As development continues, more and more solutions will be found to try and cover as many modes and display cues as possible.
  • Realism Settings - Make sure that you are flying the VSKYLABS Guimbal Cabri G2 with X-Plane's realism settings on 100% (full) realism. The VSKYLABS Cabri is designed with the approach that helicopter simulation should not demonstrate over-excessive pilot workloads just to hold it in the air. To experience the actual project's flying handling, X-Plane's realism and stability settings should set to maximum realism.

Recommended System Settings:
The VSKYLABS Guimbal Cabri G2 add-on was tested and operated on several PC configurations. As a reference, performance on the following specifications was satisfactory:
  • CPU: Intel® Core™ i7-6700 CPU @ 3.40GHz × 8
  • Memory: 32 GB Memory
  • GPU: GeForce GTX 1070/PCIe/SSE2
  • X-Plane 11 (current version).
  • Ubuntu 18.04 OS
It is highly recommended to use the Laminar Research X-Plane 11 specifications for minimum and recommended system requirements:https://www.x-plane.com/kb/x-plane-11-system-requirements/


For balanced field of view, It is recommended to set the 'Lateral Field-of-View' to 95 - 115 Degrees. This is done from X-Plane's rendering options windows in X-Plane.

Recommended Links:

Hélicoptères Guimbal website:
Before you start, it is highly recommended to visit the Hélicoptères Guimbal website. The Guimbal company website is featuring official and useful information regarding the Cabri G2, including free-to-download customer documents.

The Pilot Flight Manual ("for information only" version - which is not mandatorily updated) is available for free download at the Hélicoptères Guimbal website in the customer documents page (registration is needed).

Here are useful links to the Hélicoptères Guimbal website:
Hélicoptères Guimbal website - https://www.guimbal.com/index.php
Download customer documents page https://www.guimbal.com/index2.php?l=6#p=44

BC Helicopters / Pilot Yellow YouTube channel:
BC Helicopters are a Canadian helicopter flight training school, operating the Cabri G2 (also the R44 and the R66). They have a very exciting YouTube channel (called 'Pilot Yellow') in which they share their daily routines, flying practices and world wide adventures.

Among the interesting and fun-factored content you will find useful tutorial videos of the Cabri G2 (start-up checklist, auto-rotations etc...).

BC Helicopters website: https://www.bchelicopters.com/
Pilot Yellow YouTube channel: https://www.youtube.com/user/mischagelb

Here are a few tutorial videos of the Cabri (Pilot Yellow YouTube channel)
Please note that some of the procedures shown in the following videos with the real Cabri G2 may be slightly different than the possible ones in the VSKYLABS Cabri G2. These differences are mostly derived from one of the VSKYLABS core development elements which is creating its add-ons based on the default, built in out-of-the-box features and systems algorithms of X-Plane, which may be lacking in comparison the the real Cabri G2 (for example in the VSKYLABS Cabri G2 the EPM is a simplified version of the real EPM, not covering all of its modes of operation). These differences are being addressed in the long-term development plan of the project and will be covered to the maximum possible extant.

Introductory Flight in a Cabri G2

How to start a Cabri G2 Helicopter

Cabri G2 MLI EXPLAINED

How to do a perfect circuit

(Additional recommended links will be added here soon)

VSKYLABS Guimbal Cabri G2 Project Introduction - General Information

The VSKYLABS Guimbal Cabri G2 Project is an under development project. Development road-map is including these aspects:
  • All around 3D modeling and texturing.
  • Systems and avionics.
  • Flight Dynamics, aircraft performance and handing characteristics in all flight regimes (from ground interaction through hovering to auto-rotations etc...).
  • VR environment operations.
  • FMOD sound package.
  • Any other aspect.
Although it is fully operational and functional, every released / updated version of the project is practically a BETA version. X-Plane 11 flight simulator is constantly evolving, and so as the VSKYLABS projects.


There is a highly responsive support forums for the VSKYLABS project, both at the X-Plane.org website and the VSKYLABS Forums website. Dedicated topics for the VSKYLABS Guimbal Cabri G2 Project will be available shortly after project release.


The VSKYLABS Support Forums:
https://vskylabs.freeforums.net/


VSKYLABS Guimbal Cabri G2 Project Introduction - System Simulation Notes:


One of the core development concepts of the VSKYLABS projects is to create aircraft add-ons for X-Plane, which are not dependent nor using 3rd party plugins and/or additional coding to be required for its operation. The VSKYLABS projects are engineered and built around X-Plane's out-of-the-box features and are to be considered as 'X-Plane native' / 'X-Plane default' aircraft.

One of the leading advantages for this approach is that as long as a default X-Plane aircraft is flying and fully functional, a VSKYLABS aircraft will do the same. However, since the VSKYLABS projects are making use of X-Plane's out-of-the-box, default flight dynamics model and systems algorithms, some systems simulation may be restricted to X-Plane's default systems and features. Most noticeable are complex engine operation and computer based custom avionics (such as the EPM, which is a specific computer based avionics system which is not a part of X-Plane's default systems and avionics).

Here are a few examples:
  • EPM - The EPM system in the VSKYLABS Guimbal Cabri G2 is a simplified version of the actual EPM. Not all of the modes are simulated, but as the development plan is making progress, more and more solutions for non-simulated modes are implemented.
  • Engine (extended system) - The inter connected system of engine-clutch-reduction gearboxes, transmissions-rotors of the VSKYLABS Guimbal Cabri G2 is highly engineered to allow realistic operation in the needed operational and flight envelope regimes, however it is based on the default X-Plane engine simulation algorithms. This may cause some differences in engine behavior, performance, clutch reaction times, transmission loads etc... 

VSKYLABS Guimbal Cabri G2 Project Introduction - Flight Dynamics Notes:

The VSKYLABS Guimbal Cabri G2 Flight Dynamics Model is highly engineered to take full advantage of X-Plane 11 flight simulation with its out-of-the-box features. The extended engine system (the moving parts core elements of the helicopter) are being simulated as a sensitive, complex self-balanced system, which is not regulated by external coding. This design approach is stretching X-Plane's flight dynamics model to its extent and the result is a robust helicopter simulation.

Another aspect to consider is the virtual (simulated) engine-and-flight-dynamics operational/flight envelope, which is not covering all of the real-world aspects (X-Plane is amazing but not fully represents the real-world). Like covering an area using a short blanket...one must prioritize which parts should be covered first...and such decision might get other parts to be un-covered or less-covered. These kind of decisions are part of the project evolution, and the engine/flight dynamics "blanket" will keep on shifting until the optimal trade-off will be achieved.

Here are a few examples:
  • Most of the self-sustained aircraft-operation parameters are within reasonable and plausible margins in comparison to the real Cabri G2. However, various differences in nominal values may be existing, especially in systems which are interconnected by moving parts. These will gradually fine tuned during the project development plan to achieve optimal operation characteristics. 
  • Auto-rotation characteristics - these are still under development/evaluation and will gradually tune up to get the most plausible handling qualities. Currently, the virtual flight envelope/engine-rotors operational envelopes "blankets" may not thoroughly cover it. These aspects are being fine-tuned gradually along the project's updates and evolution as well.



X-Plane 11 Interactive Click Zones:

The VSKYLABS Guimbal Cabri G2 is interactively fully functional both in 2D mode (2D monitor display) and VR mode (Oculust Rift and other compatible gear).

In the illustrations below - you will find the general click-zones mapping for cockpit operations.


Click zones for mouse controller and/or VR touch controllers - 1:




  • Toggle Autopilot - Click to show/hide the custom VSKYLABS LSA/Experimental type autopilot.
  • Autopilot - Clickable autopilot panel.
  • Remove/Install Doors - Click on the attachment point of the doors and the fuselage to remove/Install the doors.
  • Open/Close Doors - Click on the door handles to open/close the doors.
  • Move to Left Seat - Click on the left seat area to set the pilot's view to the left seat.
  • Fuel Valve - Set the fuel valve to ON/OFF position.
  • Toggle VR Mode for Pedals - You will find the letters "VR" tagged on the collective's base. Clicking on it will switch the collective operation mode from "Normal" to "FULL VR" modes. The "VR" letters will turn green when the mode is set to "FULL VR".
    • Normal mode will have the collective's head to be operated as "collective" (up/down), and as "throttle" (left right).
    • FULL VR mode will have the collective's head to be operated as "collective" (up/down), and as "anti-torque" (left right). This mode will allow you to fly the Cabri without pedals hardware in VR environment. Although not true to life, it is a very intuitive solution which will allow full helicopter control with ease.
  • Fold/Unfold Tablet - Click on the tablet's holder attachment point or the tablet's small grip (at its upper right side) to fold/unfold it.



Click zones for mouse controller and/or VR touch controllers - 2:


  • Toggle Autopilot - 
    • Click to show/hide the custom VSKYLABS LSA/Experimental type autopilot. Instruction for the Autopilot are explained down this document.
  • Backup Switch - Backup switch mode:
    • Switch the NR switch to "backup" to power the BARC (simplified).
    • Control the rotor speed using the twist-grip control while monitoring the three NR lights. The central green light will switch on when NR is in the green arc.
  • GNS430 -
    • X-Plane 11 default, fully functional GNS430.
    • Featuring COM1, NAV1
  • Transponder
    • X-Plane's default Transponder system integrated into a similar to a Garmin GTX 327 case.
    • Other than the default transponder modes, VFR button will set the transponder with 1200 (visual flight rules - VFR) or 7700 (emergency) codes (cyclic button).
  • Clock/Timer modes
    • Set and operate the clock/timer modes in the EPM display.
  • Brightness -
    • Set and operate the brightness in the EPM display (AR will also be affected).
  • Warning lights panel -
    • STARTER is ENGAGED - Release the starter button as needed.
    • GOVERNOR is OFF - Monitor engine/rotor RPM with twist grip (manual throttle).
    • BRAKE (ROTOR BRAKE) is ENGAGED.
    • OIl.P (OIL PRESSURE) is LOW (<25 PSI) - Land immediately.
    • MGB.T - GEARBOX DEGREDATION: VSKYLABS project version v1.0b1 (initial release) this light is non-operational. It will be integrated into the system down the development road.
    • LOW FUEL - Fuel is LOW (< 10 L) - Land as soon as practicable. If EPM reads < 10 Liters - Land immediately.
    • ALT - Alternator charging MALFUNCTION - Check ALT switch ON. Switch off unnecessary electrical charges.
    • CLUTCH - Belt tension (engaged) or de-tension (disengaged) or clutch pressure too low - reduce power, reduce IAS to 50 KTS, land as soon as practicable, be prepared to enter auto-rotation.



Click zones for mouse controller and/or VR touch controllers - 3:




  • Fuel Valve - 
    • Switch fuel valve to ON or OFF.
  • Collective Operation Mode (Toggle FULL VR):
    • Click on the "VR" letters located near the bse of the collective.
    • The "VR" letters will turn GREEN, indicating that the control layout is set to FULL-VR mode, which is allowing the pilot to control the helicopter without the need of hardware pedals gear.
    • In FULL-VR mode the right hand controller will control the cyclic, while the left hand controller will control collective (up/down) and anti-torque (twist left/right). Although not true to life it will allow full and easy to adapt control layout using only two hands.
    • NOTE: To avoid VR controllers/hardware controllers conflicts it is recommended to disable cyclic and collective assignments for the physical Joystick/Pedals/Collective during FULL-VR flights.  
    • Check out this demonstration video, showing the VSKYLABS Guimbal Cabri G2 being controlled with FULL-VR model, without the use of any hardware gear for the pedals:





  • Governor switch - 
    • Will engage the governor to have full authority over engine's RPM.
    • Note that in the initial release version of the project, while the governor is engaged, there is no option to set the RPM manually. This aspect will be addressed during the continuous project development plan.
  • Starter button - 
    • Push to engage the starters.



 Click zones for mouse controller and/or VR touch controllers - 3:





  • Ignition Switches - 
    • The VSKYLABS Guimbal Cabri G2 is equipped with dual ignition system of the Magneto type. This is due to X-Plane's default systems layout which doesn't include the specific Plasma system.
  • Rotor Brake Lever - 
    • Engaging rotor brake.
  • Mixture Lever -
    • Set mixture lever to idle/Cut off.
  • Cockpit Lights -
    • Click to toggle interior cockpit lighting for night-time flights (Intense / night flight).
    • The intense light mode is intended for in-cockpit ground operations only. It will reflect light from the windshields/windows and will not allow good outside visibility during flight. For flight - use the low-intensity setting. 



AviTab Built-In Integration


The VSKYLABS Guimbal Cabri G2 Project is "AviTab ready"AviTab is a freeware plugin which is allowing tablet for cockpit usage with full support for X-Plane's native VR and normal 2D modes. In general it is a moving map and PDF viewer. It is including virtual keyboard and lots of useful stuff! It is a great map and information resource in the cockpit (including checklists etc...).

This "AviTab ready" title means that the 3D integration with the plugin is possible on the fly, as an option. The AviTab plugin is a freeware plugin which can be used for 3D and as a pop-up window as well (one can simply install the plugin into X-Plane and use it as a pop-up window with any aircraft flown).


To use the plugin with the VSKYLABS Guimbal Cabri G2 Project, simply install the AviTab plugin into X-Plane, and that's it.

IMPORTANT: The AviTab plugin itself IS NOT
a part and not included in any of the VSKYLABS projects. This plugin and its developers ARE NOT related or connected with VSKYLABS whatsoever, and VSKYLABS is not responsible to any damage or any other issues that were as a result of using the AviTab plugin. The VSKYLABS Guimbal Cabri G2 Project operation and function ARE NOT dependent on any plugin or other 3rd party software/coding. If one will want to use the aircraft without the plugin, it will have no affect the project usability and function.

For this reason, the integrated Tablet is in a "normally-folded" state, meaning that it will not be a distraction for the pilots who are not using / haven't installed the plugin. However, the Tablet can be un-folded at any time on pilot's request.

To fold/un-fold the tablet simply click on the two interactive click zones shown in the following illustration (top right - "fold/unfold tablet").


Here is a link to AviTab at the www.X-Plane.org portal (there is a whole support forum section at the .org dedicated to AviTab as well):
https://forums.x-plane.org/index.php?/files/file/44825-avitab-vr-compatible-tablet-with-pdf-viewer-moving-maps-and-more/

Experimental / LSA Autopilot system
CLICK ON THE IMAGE BELOW FOR HIGH QUALITY


Operation Supplement for X-Plane
The following information and checklists are NOT to be used in real-life training and flying. For real world flying use ONLY official, updated real-world manuals, checklists and supplements 

PERFORMANCE AND SPECIFICATIONS

General Performance and Specifications:
Equipped empty weight: 420 kg (925 lb)
Maximum Gross Weight: 700 kg (1542 lb)
Maximum level speed @ 100% (s.l. ISA): 100 kt (185 km/h)
Cruise speed @ 85%: 90 kt (166 km/h)
Vne (s.l.): 130 kt (240 km/h)
IGE hovering ceiling (@ 700 kg): 5000 ft
Hovering ceiling (2x77 kg + fuel 2 hrs): 7500 ft
Range @ 85 % (15 min reserve): 380 NM (700 km)
Maximum endurance @ 50 kt (no reserve): 5 hr 40

Main Rotor:
Type: Articulated, soft-in-plane
Number of blades: 3
Diameter: 7.2 m (23.6 ft)
Chord: 180 mm (7.1 in)
Speed: 530 RPM

Tail Rotor:Type: Fenestron®
Number or blades: 7
Diameter: 0.6 m (23.6 in)
Chord: 42 mm (1.6 in)
Speed: 5148 RPM

Transmission:
Primary transmission: Belt with a reduction ratio of 0.855/1
Main gearbox: Bevel spiral gear with a reduction ratio of 11/47
Tail Gearbox: Bevel spiral gear wit a multiplication ratio of 25/11


Powerplant:
Engine model: Textron Lycoming O360-J2A
Type: Horizontally-opposed, four-cylinder, air-cooled, carburetted, Double-ignition with one magneto and one electronic ignition.

Displacement: 361 cu.in (5.9 litres)
Max continuous power: 145 shp @ 2585 - 2700 tr/min (108 kW)
Nominal speed: 2650 RPM

Fuel:
Max capacity: 170 litres (45 US Gal)
Unusable quantity: 1.5 litre (0.4 US Gal)
Approved fuel type: Avgas 100 LL


GENERAL LIMITATIONS

  • Only day VFR is approved.
  • Aerobatic flight is prohibited.
  • Voluntary in-flight engine shut down is prohibited.
  • Flight in known icing conditions is prohibited.
  • Flight under snow is prohibited.
  • Operation is approved with either or both doors removed. In these cases, no loose object is allowed in the cabin. Speed limitations are the same than ones with doors installed and closed.

FLIGHT ENVELOPE LIMITATIONS

Altitude Limitation:
Maximum operating altitude (Zp) ............................................. 13 000 ft

OAT Limitations:
Maximum temperature ..........................................................ISA + 30°C

limited to + 45°C

Minimum operating temperature ................................................. - 20°C

Minimum storage temperature .................................................... - 30°C

Airspeed limits (-2 kt IAS per 1000 feet):Vne power-on .........................................................................130 kt IAS
Vne power-off .........................................................................110 kt IAS
Caution range ....................................................................0 – 45 kt IAS


Rotor Speed Limits:
Power-on:
Maximum................................................................................. 540 RPM
Green arc ..................................................................... 515 to 540 RPM
Minimum.................................................................................. 515 RPM
Power-offMaximum................................................................................. 610 RPM
Caution range................................................................... 540-610 RPM
Normal range.................................................................... 515-540 RPM
Caution range................................................................... 450-515 RPM
Minimum.................................................................................. 450 RPM
Rotor brake operationMaximum................................................................................. 150 RPM
High NR horn ...................................................................... > 594 RPM
Low NR horn ....................................................................... < 466 RPM


ENGINE OPERATING LIMITATIONS

Engine speed
Maximum engine speed.........................................................2700 RPM
Normal range ................................................................2585-2700 RPM
Minimum engine speed, power-on .........................................2585 RPM

Temperature

Maximum cylinder head temperature (CHT) .................................260°C
Maximum recommended CHT for shut down................................180°C
Maximum oil temperature..............................................................118°C
Minimum recommended oil temp before applying full power..........60°C

Oil pressure

Maximum .................................................................................... 7.9 bar (115 psi)

Starting and warm-up range
Maximum for flight....................................................................... 6.6 bar (95 psi)
Minimum for take-off (CLUTCH light OFF).................................. 3.6 bar (52 psi)
Minimum during idle.................................................................... 1.6 bar (25 psi)

Fuel pressure

Maximum .................................................................................. 0.55 bar (8 psi)
Minimum .................................................................................. 0.02 bar (0.3 psi)

Fuel
Approved grade.............................................................. AVGAS 100LL
Maximum tank capacity ................................................. 170 L (45 U.S. gal)
Unusable fuel quantity....................................................... 1.5 L (0.4 U.S. gal)

Warning: Do not rely on fuel quantity indication when Caution light is ON or EPM warning is active.


NORMAL PROCEDURES

Airspeeds for safe operation:
Take-off and climbs....................................................................... 50 kt IAS
Best range..................................................................................... 80 kt IAS
Autorotation................................................................................... 50 kt IAS
Never-exceed speed (Vne ), power on ....................................... 130 kt IAS
Never-exceed speed (Vne ), power off ....................................... 110 kt IAS
(-2kt IAS per 1000 feet)

Doors:

Operation with one or two door(s) removed is allowed with no additional
limitation in the whole flight envelope.

Before Engine Start:
Harnesses.............................................................................. Both fastened
Cockpit .............................................................All objects correctly secured
Pedals ....................................................................................Full travel free
Collective ................................................... Friction released, full travel free
Cyclic .....................................................................................Full travel free
Breakers.................................................................................................... In
Hourmeter ...................................................................................... Checked
Fuel shut-off valve ...................................................................Checked ON
Collective ...........................................................................Down, friction on
Altimeter.................................................................................................. Set
All switches ........................................................................................... OFF
Carburetor heating switch ..................................................................... Auto
MASTER switch ...................................................................................... ON
NR switch......................................................................................... Backup
NR green light ..........................................................................Checked ON
Lights and NR horn automatic check ........................ Monitored, all working

NR/EPM operation is the VSKYLABS Guimbal Cabri G2 is being simulated in a simplified way. Some operational differences may be encountered. 

Governor .....................................................OFF, check GOV OFF light ON
Mixture ...............................................................................Forward, full rich

Note: Before starting, NR green light, GOV OFF, OIL P, ALT. lights are on. CLUTCH light may also be ON.

Engine Start:
Headset................................................................................................... ON
Radio....................................................................................... ON if needed
Altimeter setting ........................................ Correlated with ATC information
Compass heading indication ............................................................ Verified
Strobe ..................................................................................................... ON
Fuel pump .............................................. ON, check Fuel pressure increase
Manual fuel injections.................................................................. As needed
Throttle.......... Monitor on MLI : START as required between 0% and 15 %
Rotor brake ......................................... Apply - check the light - lock forward
Mixture ................................................................................Full rich forward
Ignitions, Magneto and Plasma....................................... ON, check beeper
Area .....................................................................................................Clear
Radio clearance if needed
Starter ..............................................................................................Activate
STARTER light........... checked ON and back OFF when switch is released
After engine starts, Throttle.....................................Idle, 0% START on MLI
Alternator ............................................................... ON, check ALT goes off
Check oil pressure light........................... OFF within 30 seconds of starting
If not, shutdown the engine by mixture off
Set engine speed to .............................................. Warm engine : idle
Cold engine : 1000 RPM
CLUTCH .................................. Engage and lock switch – check light is ON
Rotor and Engine indicators....................................................Synchronized

CLUTCH light...........................................................................Wait for OFF

Ignition Test:
Set engine speed to...........................2000 RPM (upper purple radial mark)
Plasma OFF 5 sec. – maximum drop ............. 300 RPM (lower radial mark)
Magneto OFF 5 sec. – maximum drop .......................................... 100 RPM
Set rotor speed .....................................................................NR < 450 RPM
     Wait for Oil temperature increase as needed.

Set rotor speed to .......................................................................... 530 RPM
     Check BARC backup green light lights ON

CARB. HEAT ........................................................................................ HOT
     Wait for an additional Carb brick to pop
     Check that NR drops

CARB. HEAT .....................................................................................COLD
     Wait for the additional Carb brick to disappear
     Check that NR increases

CARB. HEAT ..................................................................................... AUTO

Roll-off throttle to idle.............................. Check needles desynchronization
     Check lower BARC light blinks when NR in yellow arc
     Check warning horn when NR approaches lower red limit
     Switch BARC to mute warning horn. This will also switch to normal mode
     Check idle stabilization

Governor ON, Roll-in throttle ........................................................................
     Check governor engages from NR = 400 RPM

     Check rotor speed in green arc

Note-1: The VSKYLABS Guimbal Cabri G2 engine nad rotor RPM values might differ from the real aircraft due to simulation limitations. These will gradually tune up as the project development plan is including also this aspect. 

Note-2: Current configuration of the throttle and governor in the VSKYLABS Guimbal Cabri G2 is not allowing manual throttle management when the governor is ON. This issue will be addressed in future versions of the project.

Before Takeoff:
Oil temperature......................................................................... 30°C (86°F)
      minimum recommended 60°C (140°F) minimum for max power

Doors.............................................................. Closed or secured with strap
Harnesses ..............................................................................Both fastened
Pressures and temperatures ...................................................... Green arcs
Warning and caution lights ....................................................................OFF
Performance calculation ....................................... first limit checked on MLI
Landing light and NAV. light ........................................................As needed
Radio ...........................................................................................As needed
Collective friction ...........................................................................Released


Takeoff Procedure:

On clear flat area

1. Apply collective pitch progressively to stabilize hover at 2 feet skid height.

2. Adjust cyclic trim.

3. Check engine parameters in green arcs and warning / caution lights OFF.

4. Apply slight forward cyclic to accelerate at a constant height.

5. At 45 kt IAS, rotate to reach and maintain 50 kt IAS.

6. Once climb is stabilized, adjust power as needed. Rate of climb should not exceed 500 ft/min below 100 feet in order to ease piloting in case of an engine failure.

7. Follow take-off profile shown on Height-Velocity diagram in the manual page 5-3

Climb:
1. Prescribed climb speed is 50 kt IAS.

2. Adjust power to obtain desired rate-of-climb. Maximum allowed power is indicated by 100% on MLI.

3. If full throttle is reached (100 % FLOW on the MLI), the rotor speed may decrease. In this case, slightly lower the collective to recover rotor speed.

Cruise:
All parameters ............................................................................ Green arcs
Warning and caution lights ....................................................................OFF
Fuel remaining....................................................................................Check
Economy cruise is obtained with ...............................................90% on MLI
Fast cruise is obtained with .....................................................100% on MLI
Maximum endurance speed is...................................................... 50 kt IAS
Best range speed is ...................................................................... 80 kt IAS





2 comments:

  1. Hello,
    The helicopter flies way too smooth. Is there no way to increase the sensitivity? I already tested it over X-Plane. Still too gentle.
    Best regards

    ReplyDelete
    Replies
    1. Hi there :)

      Make sure that you fly with X-Plane's realism settings on 'Maximum Realism' for both stability and control.

      It is designed with a slightly different approach on helicopter simulation: The approach is that helicopters simulation should introduce reasonable (plausible) pilot work loads; in real life a new pilot can take over the *basic* flying elements within a several flights, while a common conception of many PC helicopter pilots is that it should take dozens of hours just to hold it in place. Helicopters in real life are challenging to fly but a good helicopter can be flown basically, quite easily.

      If you are an experienced PC helicopter pilot, you will find out that you are taking over the controls of the VSKYLABS Cabri quite easily. This also applies in real-world - when an experienced helicopter pilot convert to another one (especially a safe trainer such as the Cabri).

      The project is under constant development, and the flight dynamics will have additional tuneups, so this aspect may vary a bit. But it will always remain within this design approach border-lines which are: reasonable and plausible pilot workloads in a PC based helicopter simulation.

      Thanks for reaching out!

      JMH - VSKYLABS

      Delete