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    Solar Sailing

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  1. Jesus That's awesome! ...if you say need some release pictures, you know where to find me
  2. X-38 is one of my favorite spacecraft, I'm extremely happy to see a mod for it finally. I've got very high hopes here!
  3. I am excited for the beautiful new planets!
  4. Do the proc parts have actual aerodynamics, or are they treated as just a big rectangle? A spaceplane project I've been working on has a large nose made out of a proc liquid tank configured to a cone shape. The spaceplane has terrible aerodynamics, and I've been gradually working through all possible causes of it. Does KSP's aerodynamics actually treat the liquid tank as a cone shape, or is it treated as a large block?
  5. Thanks, I enjoy bringing the missions outlined in ETS to life. Like being a descriptive, reading based story, I find it cool to see a representation of what they would have looked and functioned like
  6. Artemis III - 14th-15th June 1998The greatest test flight The relay race The first crewed flight of the Artemis program would be Artemis III, consisting of a dual launch profile. On June 14th, a Saturn H03 would carry a Pegasus and the Artemis crew lander into LEO to wait for the crew. A day later, the crew would launch abord a Saturn M02 in their Block V spacecraft, and would rendezvous with the Artemis III stack. After this, the mission will follow a similar profile to Artemis II, with the crew boosting into an elliptical earth orbit using the Pegasus. Aboard this mission are some of NASA's best pilots: - Commander Jack Bailey, first commander of Freedom - Pilot Chris Valente, an equally experienced Pilot - Kate Vaughn - James Green To preform a thorough testing of the lander, the flight plan calls for Bailey and Vaughn to Pilot it away from the Apollo, and over the next couple of days to change the inclination in short burns by a maximum of 7 degrees, aptly named 'the relay race'. As Artemis III is a similar mission to Apollo 9 & 10, the crew have kept up the tradition of naming the vehicles comedically. Inspired by the relay race in the mission profile, the crew decide to name their lander 'Roadrunner' and call their Block V 'Wile E. Coyote' Artemis 3A - June 14th Artemis 3A preparing to launch from LC-39A Artemis 3B spectates from LC-39B Liftoff Passing through Max-Q Coming up on booster staging Fairing jettison Core separation Pegasus orbital insertion burn Orbit achieved Artemis 3B - June 15th F-1 ignition Liftoff Pressurisation nominal, Artemis 3B is go at T+ 1 minute Go for staging Guidance is on target, proceed to orbit Block V separation Wile E. Coyote prepares to rendezvous with Roadrunner and Pegasus 03 Go for docking After a few hours of systems checks, the crew prepares to repeat the LPAS dockings that were demonstrated in Artemis II Redocking The crew go for another, longer docking After the LPAS system is fully tested, the crew prepare to relight the Pegasus's engines and boost themselves into a high earth orbit, mimicking a lunar return trajectory. Pegasus separation After a day, Jack Bailey and Kate Vaughn board Roadrunner Under the supervision of Wile E. Coyote, Jack Bailey does a spacewalk from the Airlock to check if it's functioning Roadrunner uses its RCS to depart, before firing up it's engines 30m later and beginning the relay race After a day of altering it's inclination back and forth, Roadrunner's descent stage is close to empty The Ascent stage separates from it's cradle, preparing to light it's Russian S5.92 Hypergolic pressure-fed engines. The Engineers had to look outside of the US in order to get the performance required for the ascent stage, looking to Russia where they had squeezed the absolute maximum out of Hypergols and pressure-fed engines, resulting in an extra 10s or 20s or ISP more than American designs. Ignition After another day, Roadrunner rendezvouses with Wile E. Coyote Docking The crew does a burn to put them on a trajectory that will land them off the coast of Hawaii, simulating a Lunar return burn Roadrunner is jettisoned, which has been acting as the mission module for the crew A couple of hours later, the crew prepare for SM separation Wile E. Coyote reorients itself, preforming the skip reentry first done on Artemis I First pass Second pass Drogues out Mains deployed Artemis III splashdown
  7. Artemis II - 5th February 1998The Artemis program test flight All up testing Issued in 1993, the contract for the Artemis landers went out to Boeing, having recently acquired the Grumman corporation who designed the LM. The design, as similar to the LM it was, was different in many ways. The descent stage for example had to preform the crewed landings, and cargo landings, meaning it needed it's own flight control computers, attitude control system, gyroscopes etc. This was all relatively straightforward however, the difficult part was the surface habitat. The problem was that the 9t of mass allocated for the surface habitat could only get the crew roughly 70 cubic meters of space, a space that would be cramped, need extensive use of multi-use space, and wouldn't allow for anything aside basic occupation. Figure 1 below shows the Design reference habitat: However, with recent leaps forward in Kevlar and other such woven composites, a team of engineers proposed reducing the fixed hab space to 60 cubic meters, and rotating it to a squat, vertical cylinder. With that extra mass, they proposed they could create a ''loft'', a deployable inflatable habitat, to be used for crew quarters and wardroom space, with a whole extra 60 cubic meters of space. Figure 2 below shows this upgraded habitat. This immediately caught traction with the main Artemis surface team, as it could solve the problems of the Hab. A small subscale demonstrator was created and tested in vacuum chambers in 1997, which proved the design worked in space. With the main design then chosen, the team got to work designing a full flight article for Artemis II, known as the Artemis program test flight. Late Jan 1998, Artemis II rolls out to launch complex 39 On the pad, Artemis II prepares for liftoff, Feb 5th 1998 Tank pressure nominal Launch commit Liftoff The centre core throttles down to reduce the G load during Max-Q and to conserve fuel for once the boosters separate Good visual indication of S-IG separation Fairing release, exposing the Cargo lander stack Stage separation and S-IVC ignition Separation from the S-IVC, just shy of orbit, leaving Pegasus to complete orbital insertion This mission carries a docking adapter between the Lander and the Pegasus, something which isn't planned for use on Artemis cargo lander flights. This is in order to test the LPAS (Large Payload Attachment System) which will join the Pegasus and the crew stack on later missions. In order to test it, the lander and Pegasus will undock, move away different differences and redock with a variety of speeds, lighting conditions and angles, in order to prove the LPAS in space. Undocking After a day of repeating this, the lander goes for one final test... Successful redocking After verifying the LPAS, Artemis II is cleared for TLI, sending it on a trajectory similar to a Lunar insertion, however it will not be going to the moon. RL-10 performance nominal The Pegasus is ow dumped through pyrotechnic separators as it would be during a normal mission The engineers wait anxiously as the loft begins to inflate So far, no leakages have been detected To test a full descent stage burn, the Lander changes it's orbital inclination up and down by 7 degrees, using it's different engine modes - 3 for LOI and descent, 1 for final descent and 2 for if the centre engine fails. At earth Apogee, the Lander preforms a final burn to send it into the atmosphere, just as the Pegasus did after separation Arriving at earth after a week of testing alone in orbit, the Engineers have verified the lander and are happy for it to be disposed of. Particular care was taken to monitoring the loft, and the Artemis surface team are happy with it, letting in little radiation, and holding itself against the vacuum of space incredible well. Preparing to enter Earth's atmosphere
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