Tuesday, January 12, 2016

VSKYLABS Latest News

VSKYLABS LATEST NEWS

UL-104 FAN-JET 

The VSKYLABS UL-104 Ultralight aircraft package is under a major update.
The basic model will have a 3D model overhaul, and an additional version of the aircraft will be added. So...Stay tuned!


VSKYLABS Powered Hang Glider project


The VSKYLABS powered Hang Glider project for X-Plane
This package is going to feature lot's of versions and variations of the motored hang glider ultralight aircraft, including a stripped down buggy-trike, pulse-jet powered trikes, rigid wing futuristic concepts an more. First aircraft in the package is the 'Trike S-1'.

TWO AIRCRAFT INCLUDED
VSKYLABS 'Trike S-1' version 2016-001 (X-Plane 10.42+)
VSKYLABS 'Trike-Buggy S-2' version 2016-001 (X-Plane 10.42+)

Buy now

Current version: 2016-002 (31/1/2016)
Added a toggle switch for pilot figure appearance 
The VSKYLABS 'Trike S-1'
The VSKYLABS 'Trike-Buggy S-2'
SCROLL DOWN FOR IMPORTANT SETUP INFORMATION:




What is an ultralight trike aircraft?
An ultralight trike aircraft, also known as a flex-wing trike, weight-shift-control aircraft, microlight trike, deltatrike or motorized deltaplane, is a type of powered hang glider using a high-performance Rogallo wing coupled to a propeller-driven three-wheeled undercarriage. While many powered aircraft have three-wheeled landing gear, the term "trike" refers specifically to the form of aircraft described above.

Flight control in a trike is made by weight-shifting; the undercarriage structure is connected to the wing at a hinge-point, and the wing can be tilted in both X and Y axes. While on the ground (takeoff for example), pushing the wing control bar raises the angle of attack of the wing and lift is produced. As the aircraft is airborne, moving the control bar of the wing causes the undercarriage to swift both sideways or back and forth, and a weight-shifting control is achieved.



Performance (VSKYLABS 'Trike S-1'):
  • Climb Rate @ Gross weight: ~850 fpm.
  • Stall Speed @ Gross weight: ~40 knots.
  • Cruise speed: 55-65 knots.
  • VNE: 80 knots.
  • Descent Rate @ Gross weight / Idle: ~500 fpm @ 44 knots.
  • Fuel Capacity: 12 Gallon.
  • Fuel Burn @ Cruise speed: ~2 Gal/Hr.
Performance (VSKYLABS 'Buggy-Trike S-2'):
The characteristics of the pulse-jet thrust is quite interesting in such of an ultralight aircraft, when comparing it to a standard propeller-driven engine.
Take off run is a little longer, maximum airspeed is much higher (you don't cruise at more than 60% power!), and climb rate is much higher.
  • It is a completely experimental aircraft.
  • Climb Rate @ Gross weight: >850 fpm.
  • Stall Speed @ Gross weight: <40 knots.
  • Cruise speed: 55-65 knots.
  • VNE: 80 knots.
  • Descent Rate @ Gross weight / Idle: ~500 fpm @ 44 knots.
  • Fuel Capacity: Propane Tank (~60 lbs).
  • Fuel Burn @ Cruise speed: N/A

Flight model important notes for X-Plane (both models):
  • The 'Trike S-1' is trimmed for 45-50 knots. Adding power will affect the pitch attitude slightly and produce a nose-down moment. I made this setup due to some limitations of X-Plane's flight model which concerns hang-gliders physics; in real life - the engine's thrust vector is in straight line with the CG location, and change of power settings doesn't affect the aircraft's attitude. In the 'Trike S-1' flight model, the vertical CG location is lowered, as much as possible, to eliminate "nosing-up" when tilting the wing upwards, while on the ground (X-Plane is shifting the weight backwards while on the ground...this doesn't occur in real life, when the weight is actually shifting while airborne). So...when changing the engine's setting from full power to idle, expect a slightly nose-up moment. Once the power setting is settled down to a ~50 knots flight, minimum pressure on the control bar will be required.
  • Because the trike is trimmed to 45-50 knots, almost no pressure at all will be required on final approach, and when the engine is on Idle, it will keep gliding in a good attitude, near the stall speed, right until touchdown. This is a very fun exercise when landing the trike.
  • Do not exceed a 60 degree turn, nor abrupt movements of the control bar on steep turns. The lateral stability of the trike is limited, and it could snap out of the turn.
  • When flying the Trike-Buggy S-2: Take off with 100% power. Once airborne, set it to ~60%.
How to fly the VSKYLABS 'Trike S-1' and the 'Buggy-Trike S-2' in X-Plane:
  • Point of View setup: 
    • Set the lateral field of view to 95 degrees.
    • You can do this from the 'Rendering options' menu in X-Plane.
    • You can toggle between 95 and 105 degrees by clicking on the screen of the smartphone which is in front.
  • Pilot Toggle Switch: Located in the cockpit panel. Push to toggle the pilot appearance in the cockpit (for not seeing the pilot object).
  • Joystick and controls setup: You can fly the trike with regular fixed wing aircraft joystick setting (pull the stick to pitch up, push the stick to pitch down). For more realistic training, joystick pitch axis should be inverted (joystick setting menu) to simulate the real style flying of the trike which is push the control bar of the wing to tilt it up and by that getting the nose up (push for up). When moving the control bar of the wing, the weight of the undercarriage is shifting also and once airborne it is the main control input for the trike.
  • How to fly a hang glider trike? I will write a brief manual soon. Until then, you can go to this YouTube links and get yourself familiar with this beautiful flying machine. It is from the channel of Paul Hamilton (I don't know him in person but his videos are great):
Here are some videos of the VSKYLABS Trikes:







Stay tuned for updates


Friday, November 27, 2015

VSKYLABS F-19 Stealth Fighter


VSKYLABS 
Testors/Italeri version of the
F-19 STEALTH FIGHTER V2015-003.1
FOR X-PLANE FLIGHT SIMULATOR (V10.42+)
** VSKYLABS development of the F-19 is approved by Italeri **
This package contains files with virtual content for usage with X-Plane flight simulator.
No physical model included.

(TWO AIRCRAFT PACKAGE)


VERY IMPORTANT LINKS:

In General:
The VSKYLABS F-19 Stealth Fighter aircraft is designed around the Testors/Italeri's concept, which was based on research and information that was available back in the 80's through the media and public sources. The assumptions back then were that the stealth fighter was a sub-sonic aircraft, small, light and with dimensions which made it air-transportable in a Lockheed C-5A Galaxy. It was assumed also to have only internal fuel tanks, and used the same General Electric F404 engines as the F-18 Hornet but without afterburners. This is the most comprehensive project of VSKYLABS, and it features a fully operational aircraft and systems.

The VSKYLABS F-19 Stealth Fighter is an upgraded version of the 80's concept. The upgrade is mostly done with a replacement of the old F404 engines with a newer, more powerful F414-GE-400 engines.

Flight Dynamics Model:
This is the core of the project: Is the F-19 design plausible, considering its design and mission estimations back in the 80's? X-Plane's Flight Dynamics Model is based on the physical dimensions and structure of the aircraft, and this was a really great opportunity to test the design and see if it meets its estimations regarding it's range of operation, lift to drag ratio and power to weight ratio, service ceiling, maximum speed, low speed characteristics, payload management, center of gravity behavior and the performance of the GE F404 engines when propelling it's platform.





The Testors/Italeri F-19 Stealth Fighter design history:
summary from an article, published in the Los Angeles Times Magazine, by Paul Ciotti:

In the spring of 1985, the Testors model kit company introduced it's model of the super-secret F-19 stealth fighter, and immediately created an international sensation. An irate congressman held up the kit during testimony from the chairman of Lockheed and demanded to know how a toy company was able to sell plastic models of a plane that members of Congress weren't allowed to see.

The man who came up with the model, Testors plane designer and airplane buff John Andrews, claimed it to be a result of sound engineering and common sense. Because Andrews had learned from public sources that the stealth fighter used the same General Electric F404 engines as the F-18 Hornet but without afterburners, he knew the plane was subsonic, which was no surprise. Figuring out the size of the stealth fighter was less difficult than one would suppose. "We knew that it was air-transportable in a C-5 (the Lockheed C-5A Galaxy)," Andrews says, which meant the plane had to be small, light and not burdened with external fuel tanks. "You wanted to be able to roll it out of the C-5 and fly away."

Operating on the assumption that the plane, like the C-5, had to be able to take off from unpaved runways gave Andrews a wheel tread the width of the main landing gear of 15 1/2 feet. That and the fact that the plane had to have internal fuel tanks dictated a wingspan of 24 feet. Because the cargo bay doors on the C-5 are only 18 to 19 feet wide, Andrews knew that the stealth had to have folding wing tips. The size and weight of the engines determined the center of gravity, which in turn determined the location of the forward landing gear.

For weaponry, he gave the stealth the same AGM-65 Maverick air-to-ground laser-guided missiles used by the Air Force and Marines but mounted them internally.

To reduce the infrared signature left by exhaust, Andrews says, he added flush-mounted air intakes for adding bypass air to the exhaust and a rectangular nozzle for scattering engine gases.

In deciding on the model's basic shape, Andrews had a lot to go on. Twenty-five years earlier, Lockheed had built the SR-71 high-altitude reconnaissance plane with its classic sharp-edged, wedge-shaped cross section ("a very stealthy plane," Andrews says). He had also seen the CIA's Mach 3.5 D-21 photo reconnaissance drone in an aircraft "boneyard" outside Tucson. Andrews says he combined the primary features of these pre-stealth aircraft with what he already knew, then took the design "to the ultimate."



Please read this COPYRIGHT and DISCLAIMER information before downloading and/or using files from VSKYLABS.COM



VSKYLABS F-19 Features List


VSKYLABS F-19 Stealth Fighter Features List (updated to 21/12/15):
  • General Design:
    • Detailed air frame based on the authentic Testors/Italeri design.
    • VSKYLABS development of the F-19 is approved by Italeri.
  • Flight Controls and Air frame:
    • Each wing consists differential spoilers for roll control.
    • Single, central elevator is located behind the engines exhaust nozzles, and serves also as "thrust deflector", thus increase pitch authority control at full power.
    • Fixed Canards are located in front of the engines intakes. The Canards improves pitch-trim loads and also straighten the intake airflow.
    • Dual speed brakes are biased to both rudders.
    • Control system is powered by dual, engine driven Hydraulic systems, backed up by automatic, manual control system mechanism.
    • 3 x internal weapon bays for internal armament.
    • Engine intakes re-designed into a plausible structure to for the F414-GE-400 engine specification and intake required surface/volume.
  • Landing and Arresting Gear:
    • Landing gears: The F-19 is equipped with an aircraft carrier operational landing gears system. Main and nose gears are similar to the F-18 heavy duty landing gears mechanism. The detailed landing gears are fully animated.
    • Tail hook.
    • Braking chute.
  • Cockpit and Avionics:
    • Two versions of the aircraft: Caged canopy, and bubble-type canopy.
    • The bubble-type canopy aircraft features a 3D HUD.
    • By concept, as a single seat attack fighter, the cockpit is similar to the F-18/E cockpit.
    • 3 x main MFD's for map/tactical/nav aids/artificial horizon and flight data displays. Heading bug, HSI needle, display modes, map zoom in/out are all controllable through click buttons of the MFD's.
    • 1 x ECAM screen for engine data, system damage and fuel management information.
    • 1 x screen for X-Plane's pop-up GPS system.
    • Electric panel: Generators, Battery, Inverters.
    • ECS (environmental control system): Pressurization (cabin press/ram/dump), Anti Ice, Bleed Air.
    • INTR LT panel: consoles, flood lights.
    • EXT LT panel: Nav, Strobe.
    • FUEL panel: fuel management, fuel transfer, fuel dump. shutoff.
    • Autopilot operations with altitude, heading, attitude, terrain following modes.
    • Annunciator panels.
    • Engine Fire extinguishers.
    • Stick, throttles, landing gears, tail hook, parking brakes.
    • All switches and displays include detailed information for on-screen instruments explanation (feature you can to easily enable/disable in X-Plane).

  • Armament/Weapon systems:
    • Internal weapons selector:  2 x AIM-120 AMRAAM missiles, 1 x Long Range Strategic AGM missile (classified).
    • Defensive Flare/Chaff.
    • Parachute flares.
    • Reconnaissance Camera (View Finder) with dual tilt and field of view modes (horizontal/vertical, wide/narrow) and night vision capability. 
    • Night Vision switch for all views.
    • HUD display (the F-19 is not equipped with a HUD system, but there is an option to use HUD displays).

  • Power Plant:
    • 2 × General Electric F414-GE-400 turbofans.
    • Dry thrust: 13,000 lbf (62.3 kN) each (no afterburner).
  • Interactivity
    • The MFD left/right screens are clickable for easy head glancing left/right; it's a toggle click mechanism so the second click gets you back on center-line view.
    • The Middle MFD screen is clickable also, for fast changing of the field of view. It's a toggle mechanism also and you can switch easily between 65 to 95 degrees.
    • On screen explanations for each operational switch in the cockpit.
  • Sounds:
    • Custom sounds, Layered sounds.
    • Custom warning sounds for defensive missile launch, pull-up, warning, engine fire, high angle of attack, electronic radar alt readouts and more.
  • Textures:
    • 4096*4096 textures layout.

Thursday, November 26, 2015

F-19 Aircraft Technical Data


VSKYLABS F-19 Stealth Fighter Technical Data and Instructions


SCROLL DOWN FOR IMPORTANT INFORMATION AND INSTRUCTIONS
  • Role: Stealth strike fighter
  • Crew: One
  • Wing Span: 31'8"
  • Overall Length: 59'0"
  • Overall Height: 13'2"
  • Mission Weight at Takeoff: 46,000lbs
  • Engine(s): 2 × General Electric F414-GE-400 turbofans, dry thrust: 13,000 lbf (62.3 kN) each (no afterburners)
  • Range: 520 miles
  • Ceiling: 50,000'
  • Maximum Speed in level flight at 0': Mach 0.95
  • Maximum Speed in level flight at 36,000': Mach 1.1
  • Armament: Three internal weapon bays carrying 2 x AIM-120 AMRAAM's, 1 x AGM-N1 (classified).

The F-19 flying and handling characteristics:

Wing configuration:
Due to its long chines, ended backwards with an "outer" wing portions (as the wings themselves), the F-19 wing configuration is comparable with the cranked arrow wing concept (which was introduced into the F-16 design as a logical choice to substantially improve range, payloads and performance across all mission areas). This wing configuration retains the advantages of the Delta-wing for high speed flight, while overcoming it's disatvantages in excessive bleed rate and stability by having the outer wing portions at a reduced sweep angle. It also retains excellent low speed characteristics and minimizes trim-drag penalties common to tailless Delta wings: 
  • The increased wing and fuselage volume allows an internal fuel increase which greatly increase range and provides extensive weapons carriage possibilities.
  • This configuration increases skin friction drag but reduces wave, interference and trim drag for overall Net decrease.
  • Higher penetration speeds.
  • Reduced signature.
  • Improved flying qualities - stable at all conditions and loadings.
  • "Good ride" quality.
  • Lower radar signature (by 50% due to shape).
The F-19 is powered by two non-afterburning engines, having a thrust to weight ratio of less than one. In addition, the aircraft's low aspect ratio Delta wing configuration produces high Drag when maneuvering in a high angle-of-attack attitudes ("high Alpha"). This combination is causing the F-19 aircraft to bleed airspeed while maneuvering, and loose it's energy rapidly (kinetic potential). The low thrust to weight ratio also limits its ability to gather back its energy while maneuvering.This factor is causing the F-19 to be very vulnerable behind enemy lines, and great attention must be invested by the pilot when flying the aircraft and managing it's energy. Remember: Speed is energy. Energy helps you get in and out of battle.


The F-19 is very vulnerable once engaging into a close range dogfight

The VSKYLABS F-19 Stealth Fighter armament:

The VSKYLABS F-19 Stealth Fighter's primary mission is to penetrate deep into the designated target area, launch it's medium-range air to surface tactical nuclear missile, and head back to base, undetected. The F-19 carries 2 x AIM-120 AMRAAM for self defense or Fighter-Sweep objectives.

The AIM-120 AMRAAM
The AIM-120 Advanced Medium-Range Air-to-Air Missile, or AMRAAM, is a modern beyond-visual-range air-to-air missile, capable of all-weather day-and-night operations. It employing active transmit-receive radar guidance and it is a fire-and-forget upgrade to the previous generation Sparrow missiles. When an AMRAAM missile is being launched, NATO pilots use the brevity code "Fox Three".
  • Type: Medium-range, active radar homing air-to-air missile.
  • Place of originUnited States.
  • Specifications:
    • Weight 335 pounds (152 kg)
    • Length 12 feet (3.7 m)
    • Diameter 7 inches (180 mm)
    • WarheadHigh explosive blast-fragmentation (40-50 pounds)
    • Detonation mechanism: Active RADAR Target Detection Device (TDD)
    • Engine: Solid-fuel rocket motor
    • Wingspan20.7 inches (530 mm)
    • Operational range: 
      • AIM-120A/B: 55–75 km (30–40 nmi)
      • AIM-120C-5: >105 km (>57 nmi)
      • AIM-120D (C-8): >180 km (>97 nmi)
    • SpeedMach 4 (4,900 km/h; 3,045 mph; 1.3612 km/s)
    • Guidance system: inertial guidance, terminal active radar homing
The AGM-N1
Medium range air to surface missile, carrying a tactical nuclear warhead (classified).

Firing one of its two AIM-120 AMRAAM missiles
Launching the AGM-N1(classified)
Considerations when firing missiles: The AGM-N1 Missile drop up to 300' from the aircraft when launched, due to it's booster ignition suspension. As a general rule, don't launch the missile at low altitude. It may hit the ground before it can flyaway to the target.


The F-19: General performance characteristics:

Some reference numbers:
  • Takeoff - 35,000 lbs:
    • Rotation: 160 knots.
    • Lift off: 175 knots.
  • Take off - 46,000 lbs:
    • Rotation: 170 knots.
    • Lift off: 185 knots.
  • Lift/Drag ratio: 
    • 4.8 - Normal flight / 300 knots.
    • 3.6 - Near stall.
  • Suggested climb profile to 38,000' / Mach 0.95:
    • Initial climb at 350 knots to 20,000'
    • At 20,000': Accelerate to Mach 0.8
    • Climb at Mach 0.8 to 30,000'
    • Climb at Mach 0.85 to 38,000' and gradually pitch off to reach Mach 0.95 
  • Airspeed Management:
    • Above 28,000': 
      • Do not perform maneuvers below Mach 0.85
    • Below 28,000':
      • Horizontal maneuvers: Combat speed is Mach 0.85 (best turn rate).
    • Low Altitude (below 7000' AGL):
      • Corner speed is Mach 0.85 / 520 knots.
      • Maximum allowable g load factor: 7g
  • Landing:
    • Final: 180-190 knots.
    • Touch down speed: 165 knots.

Front Cockpit Panel - Main Switches
  1. Air to Air / Air to Ground Weapon selector.
  2. Re-arm all weapons.
  3. Fire extinguishers (left/right engines).
  4. Tactical/Navigation map (toggle push on the screen  to move the head to the left side).
  5. Instruments brightens.
  6. Map zoom selector (top to bottom switches, up – see far / down – see close).
  7. HSI needle selector (right/left).
  8. Map mode selector (cyclic).
  9. Heading bug selector (right/left).
  10. Display layers selectors (VOR's, NDB's, TCAS...).
  11. Warning Annunciator panel #1
  12. Flight data and Recon camera MFD (toggle push on the screen to change field-of-view setting 65/95 degrees).
  13. HUD power on.
  14. HUD brightness ratio.
  15. Recon camera on/off switch.
  16. Recon camera tilt/field of view switches.
  17. General navigation screen ( (toggle push on the screen  to move the head to the right side).
  18. Autopilot mode selectors (alt/heading/pitch/terrain follow/wing level).
  19. Autopilot on/off switch.
  20. Braking Chute.
  21. X-Plane's GPS (click on the screen to toggle pop-up).
  22. ECAM MFD.
  23. ECAM display selectors (engine/ fuel management and systems status)

Side Cockpit Panels - Main Switches
  1. Engines shut-off switches (left/right).
  2. Engines start-up switches (left/right).
  3. Fuel Dump switch (on/off).
  4. Fuel transfer switches (both tanks - transfer fuel to TANK NO#).
  5. Ext lights - Navigation and Strobe lights.
  6. Artificial stability: Yaw Damper / Artificial Stabilization.
  7. Landing lights switch.
  8. Oxygen meter.
  9. Parking brakes.
  10. Landing gears handle.
  11. Tail-hook handle.
  12. Annunciator panel #2.
  13. Avionics on/off switch.
  14. Annunciator test button - CLICK AND HOLD.
  15. Electricity panel: generators #1/#2, inverters, battery switches.
  16. Pressurization DUMP switch.
  17. Pitot tube heating switch.
  18. Anti icing systems switch.
  19. Bleed air switch on/off.
  20. Interior panel lights (left/right/center).


Flying tips for X-Plane flight simulator:
  • The aircraft loads up with a 2D HUD display. To switch on the 3D HUD display, you have to turn off the 2D HUD, by using the "HUD power on" toggle switch (no.13 in the front panel map. Scroll up here to see it). This switch toggles between the 3D & 2D HUD. Brightness of the 3D HUD is controlled by the instruments brightness rheostat.
  • Enable X-Plane's "show instrument instruction in the cockpit" (by entering the 'About/Instructions' window in the simulator, and mark/un-mark the check box in the bottom of the window. After you enable it, you can point your mouse to any relevant switch/screen in the cockpit and read useful information about it.
  • For takeoff and landings click on one the MFD's screens to adjust field-of-view and head position to see the runway center line.
  • When landing on regular/long runways and on an aircraft carrier, do not extend the air-brakes on final approach. Extension of the air-brakes result in an additional 1-2 degrees to nose attitude and affects forward visibility in a 3-4 degrees final.
  • When landing on short runways (air strips in the desert), extend the air-brakes on final approach and deploy the braking chute upon touchdown.
  • Important Joystick assignments:
    • Assign the 'Pitch trim up/down' and 'Aileron trim left/right' to your joystick HAT switch.
    • Assign the 'Speed-Brakes extend full/retract full'.
    • Assign the 'Target select up/down'.
    • Assign the 'Deploy flare/chaff'.
    • You can assign the 'Weapon select up/down' or use the A/A / A/G click switches in the cockpit.
    • You can assign the 'Fire all armed selections' or use the space-bar to fire a weapon.
  • Navigation Aids:
    • Click on the lower left screen to pop up X-Plane's GPS.
    • Use the buttons around the left/right MFD's to set the needed zoom, map mode, Nav aids display modes, TCAS, heading bug and HSI needle setting.
KEEP TRACKS OF THIS PAGE AS MORE DETAILED INFORMATION WILL BE ADDED ACCORDING TO VERSION UPDATES


Wednesday, November 25, 2015

F-19 Photo Gallery


VSKYLABS F-19 Stealth Fighter Photo Gallery

Scroll down to see lot's of screenshots of the
VSKYLABS F-19 Stealth Fighter
Latest version pics are UP in this page







 



 








SCREENSHOTS OF OLDER VERSIONS: