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| − | [[File:Aeris 4A on runway.png|thumb|An Aeris 4A ready to start.]]
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| − | [[File:Aeris 4A in orbit 2.png|thumb|In orbit around [[Kerbin]] above one of the craters.]]
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| − | [[File:Aeris 4A in orbit.png|thumb|Another shot in orbit prior to descending.]]
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| − | The '''Aeris 4A''' is a manned [[Stock craft|stock spaceplane]] with [[single-stage-to-orbit]] capabilities. <!-- With sufficient piloting skill it is capable of reaching a 100 km circular [[Kerbin]] orbit, [[docking]] with another craft in orbit and returning safely to the ground without decoupling any parts. -->
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| − | During the 0.25 update when the Spaceplane Plus mod was integrated into KSP, Aeris 4A was modified for the new wing and elevon parts.
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| − | [[File:Aeris 4A on the runway.png|thumbnail|right|The Aeris 4A on the runway ([[1.0.5]])]]
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| − | == Craft Description ==
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| − | {{Quote|The Aeris 4A is a spaceplane capable of reaching orbit, if flown correctly.|Squad}}
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| − | ==Features==
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| − | The Aeris 4A is equipped with two [[TurboJet Engine]]s for atmospheric flight. The [[intake air]] is provided by four [[Radial Air Intake]]s and two [[Ram Air Intake]]s. For orbital flight, one [[LV-T30 Liquid Fuel Engine]] is provided. The rocket engine will first feed from the tanks mounted to the jet engines.
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| − | Four [[RV-105 RCS Thruster Block]]s and four [[Place-Anywhere 7 Linear RCS Port]]s are added for orbital control, allowing both rotational and translational movement.
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| − | With an [[Inline Clamp-O-Tron]] docking port facing upwards, it is possible to dock with other craft.
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| − | ==Action Groups==
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| − | For faster switching between atmospheric and orbital flight, the Aeris 4A has four [[action group]]s predefined:
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| − | # Activate turbojet engines
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| − | # Activate liquid fuel engine
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| − | # Shutdown jet engines, toggle intakes
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| − | # Open docking port
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| − | Its engines are supposed to be controlled through action groups, not through staging.
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| − | == Possible improvements ==
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| − | [[File:Modified Aeris 4A.png|thumb|Suggested modifications applied]]
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| − | Whilst the supplied plane does perform ok, there is some scope for tweaking and/or improving the design, with some quick and easy changes. These are just some basic ideas and things to try out:
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| − | * Change the [[LV-T30 Liquid Fuel Engine]] to the [[Toroidal Aerospike Rocket]], to reduce the chance of a tail strike on takeoff and landing, and arguably improve aesthetics. The aerospike engine is also more fuel-efficient, but has only 81% of the thrust (still sufficient to achieve a 100 km circular orbit from a 20 km transition from jets). This change had been applied to the stock craft in 1.2.0.
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| − | * Change action groups 2 & 3 to toggle the engines, instead of just activating them. It is also possible to change the first action group, but this is only required for starting the engines on the runway.
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| − | * Remove the [[Inline Advanced Stabilizer]], as it's really not necessary with the changed SAS system. The cockpit now provides both sufficient reaction wheel torque and SAS. Atmospheric handling is arguably improved with less torque.
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| − | * Move the nose wheel backwards, under the main body (e.g. under the docking port body section), to eliminate the approximately 2° nose down attitude when sitting on its wheels. This also helps to reduce body flex when sitting on the wheels. It is also possible to rotate the wheel so it's folds forward like the wheels mounted at the rear.
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| − | * Add struts between the cockpit and fuel tank or wings, to reduce flexing around the RCS tank and docking port (now obselete as of [[0.23.5]], as node connections have been revamped).
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| − | * Add [[Battery|batteries]] and [[solar panel]]s, for extended duration orbiting.
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| − | * Change the [[AV-R8 Winglet]]s to [[Advanced Canard]]s on the nose, and [[Standard Canard]] on the tail, for improved handling.
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| − | * Add a ladder onto the cockpit.
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| − | * Unlock steering on the front wheel using the right-click tweakables menu.
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| − | After some of those improvements the [[Center of mass|centers of mass]] and [[Center of lift|lift]] may change which should be compensated by adjusting the wings forwards or backwards.
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| − | == See also ==
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| − | * [[Tutorial:Aeris 4A mission]], a tutorial on how to launch this craft
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| − | * {{Images}}
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| − | {{stock craft}}
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| − | [[Category:Stock craft]]
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