ISV Venture Star with Photon Sail
Add-On for Orbiter 2016 (v.160828)

The starship ISV Venture Star from the movie Avatar is one of the most scientifically accurate movie spaceships...
The ship is 1.5 kilometers long. In the Sol departure phase, a battery of orbital lasers illuminates a 16 kilometer diameter photon sail attached to the ship's nose. A mirror shield on the ship's rear prevents the laser beams from damaging the ship. The lasers accelerate the ship at 1.5 g for 0.46 year. At the end of this the ship is moving at 70% the speed of light (210,000 kilometers per second).
...The ship then coasts for the next 5.83 years to Alpha Centauri.
There are no batteries of laser cannon at Alpha Centauri so the lightsail cannot be used to brake to a halt. Instead, the twin hybrid fusion/matter-antimatter engines are used. The engines burn for 0.46 year, producing 1.5 g of thrust, thus braking the ship from a velocity of 70% c to zero. The engines are angled outwards a few degrees so that the exhaust does not torch the rest of the ship.
This design has the engines on the top and the rest of the ship is dragged behind on a long tether. The result is a massive reduction in structural mass.
The engines are topped by monumental heat radiators used to get rid of waste heat from the matter-antimatter reaction. According to the description, after the burn is finished, the radiators will glow dull red for a full two weeks.
-Source: www.projectrho.com (please see for more information)

Credits:
Original mod: Luke Reichelt, gattispilot, francisdrake (see Readme-orig.txt)
Original mesh: ?
VesselBuilder: Fred18
metal tex.: PhilipK
complete mesh rework, textures, animations, VesselBuilder cfg, D3D9 opti.: Buck Rogers
Martin Schweiger & Orbiter Forum members

REQUIREMENTS
"VesselBuilder for Orbiter2016" add-on
https://www.orbiter-forum.com/showthread.php?t=40517

Optional:
D3d9 Client(tested with R4.25)- works without but doesn't look half as good!
https://www.orbiter-forum.com/showthread.php?t=18431

flexer's Avatar System and the Valkyrie shuttle, available for download from Mediafire

INSTALLATION
Extract all files to the root of your Orbiter program directory, preserving the directory structure. This should NOT overwrite anything in the standard Orbiter package.

For Orbiter 2010: requires Spacecraft4, install BOTH orbiter2016 and orbiter2010 folders and use the new .scn file.
If you make virtual links for D3d9 (or don't use it) you don't have to install the modules folder. "G" for animations.


SPACECRAFT SPECS and CONTROLS

Photon Sail: The Photon Sail is a seperate spacecraft, select with F3
Used for earth outbound trip

Diameter		5000m (~1/3 spef)

[CTRL]+[SHIFT] + [G] = Extend Photon Sail (be patient!)
[SHIFT] + [G] = Retract Photon Sail

Main Engine: standard Orbiter throttle control
[K] = Main Engine visual effect on
[SHIFT] + [K] = Main Engine visual effect off
has rcs controls for convenience


ISV Venture Star:

Length			1.5 km
Empty Mass		5,500,000.00 kg
Fuel Mass		14,800,000.00 kg

[SHIFT] + [G] = Spin Centrifuge on
[CTRL]+[SHIFT] + [G] = Spin Centrifuge off
[K] = Radiator glow on
[SHIFT] + [K] = Radiator glow off

[ALT]+[B] = Toggle All Beacons
[CTRL]+[L] = Toggle through Spot Lights

Addon Notes:
Unfortuneately the engine/ radiator effects aren't linked to the throttle (needs coding) hence the manual control
The Photon Sail is only about a third of the specified diameter, it was too big!