This star trek papercraft is the Nova-class USS Equinox (NCC-72381), created by Clever Santoro Lopes and from cleverpapermodel. The USS Equinox (NCC-72381) was a Federation Nova-class science vessel that was in service with Starfleet in the late 24th century.
The vessel was constructed at the Utopia Planitia Fleet Yards, and was commissioned in 2370. It carried an initial crew compliment of seventy-eight and had a Mark I EMH.
Under the command of Captain Rudolph Ransom, with first officer Max Burke, the Equinox was on a short-range exploratory mission in an unknown system's asteroid belt when it mysteriously disappeared shortly after the vessel's commissioning. It was later discovered that the Equinox was pulled into the Delta Quadrant by the being known as the Caretaker, and its crew experimented on.
After leaving the Caretaker's array, Ransom ordered a course set for the Alpha Quadrant. However, because of the low maximum warp capability of the Equinox, the voyage was estimated to take several hundred years. Shortly after getting underway, the Equinox strayed across the borders of the Krowtonan Guard. In the week that followed, half of the Equinox crew were killed, and severe damage was inflicted on the vessel. Ransom decided to continue on through Krowtonan space, instead of adding a further six years to the ship's journey.
By 2372, the Equinox was in a state of complete disarray. The vessel's warp engines were almost burned out, and essential supplies were at a minimum. It was at this point that the ship made contact with the Ankari, and received their 'blessing', which turned out to be the appearance of a nucleogenic creature. These creatures had a large antimatter content, and, when the Equinox crew attempted to recall another, it was unable to survive in our dimension, and died. After several unsuccessful attempts to keep the creatures alive, Ransom ordered the use of the dead creatures for fuel, and the Equinox was able to increase her warp capability significantly.
Eventually the use of the creatures became more and more commonplace, and the Equinox overtook the USS Voyager - also trapped in the Delta Quadrant, but with a significantly faster warp capability - and was within sight of reaching home.
However, the creatures responded to the Equinox crew's experiments by launching an intensive attack on the vessel, damaging it almost beyond repair. With each attack, Captain Ransom would send out a distress call on a Federation frequency - solely as a comfort to his crew, and not expecting a response. In late 2375, Ransom's distress call was picked up by Voyager, who drove away the alien attack, and recovered the surviving Equinox crew, now numbering no more than a dozen. In order to conceal their unethical work from discovery, Ransom ordered the vessel's research lab flooded with thermionic radiation, by the redirection of three EPS conduits into the area.
When the alien attacks began to overwhelm Voyager's defences as well, Captain Janeway, under Starfleet regulation 191, made the decision to abandon the Equinox. However, Ransom chose to ignore the request, and made preparations to leave Voyager behind. In the meantime, The Doctor had discovered the true nature of Equinox's modifications, and Janeway ordered the arrest of Ransom and his crew, pending a full investigation. The Doctor returned to the Equinox, along with Seven of Nine, to shut down the warp core modifications and retrieve the remaining experimental data.
Ransom escaped and The Equinox then fled from Voyager, stealing a field generator that would disable the aliens in the process, and escaping at maximum warp, leaving the Intrepid-class vessel at the mercy of the nucleogenic assault.
Voyager eventually caught up with the Equinox, and in the ensuing confrontation, Burke seized command of the vessel from Ransom, as Ransom attempted to surrender to Janeway. Ransom was successful in transporting a few of the surviving crew to Voyager as well as Seven of Nine and Voyager's Doctor - but was unable to save Burke or several other crewmembers on the bridge, who were killed when he dropped shields to force Burke and the others to beam to Voyager. The Equinox succumbed to a warp core breach moments later, as a result of heavy damage inflicted by Voyager and the aliens - Ransom remaining on board to steer the vessel away from Voyager and protect that ship from the explosion.
The five surviving Equinox crew were stripped of rank by Captain Janeway, and restricted to minimal privileges aboard Voyager.[via utopiaplanitia]
The Nova-class was a type of Federation starship designed for short-term planetary research missions. It was placed in service starting in the mid-to-late 24th century.
You can download this star trek paper model from here: Star Trek - Nova-class USS Equinox (NCC-72381) Free Papercraft Download