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ES-107 SKYLON

!!如果在载具列表里找不到它，参见讨论区

ES-107 SKYLON 是一款用途广泛的中型/重型 SSTO 空天飞机。它可以向 LKO 运送最多 70t 货物或 32 名乘客。设计基于 REL“云霄塔”空天飞机项目，但不打算做成高仿模型。

纯原版，无 mod，无 DLC。空天飞机本体部件数 161，含四个模块在内的总部件数 314，根部件是前方的 Mk3-3.75m适配器。
关于自定义旗帜，参见截图和设计手记。

- 啊...那优雅的剪影。
- 用旗帜捏出来的“3.75m 货舱”。
- 满载 70t 入轨后余有 200m/s dV @ 85x85km LKO，搭载低密度货物时余有 900m/s dV。
- 重心经过平衡且几乎恒定，不受燃料消耗量影响，在整个任务过程中均有良好的机动性和稳定性。无需转移燃料。
- 重心位于货舱中心，有利于货物排布。
- 包括 4 个可选载荷模块。
- 可实现大气层水漂，滑翔性能优秀。

- It’s another experiment on unconventional cargo bay designs, and my first step into the world of flag building.
- While the pure white placeholder texture is acceptable for me, the flags still look a lot nicer with stock background texture. It’s simple to have it: get a fully transparent picture, name it "empty" (empty.png) and place it in your KSP Flags folder. I provided a ready-made empty flag HERE.
- The Skylon looks like a vehicle with not much lift at low speed. It requires a 5.5km long runway to achieve takeoff speed, while in KSC we only have 2.5km. Even though I’ve added as many wing surfaces as I can accept to be reasonable, it still requires most of the runway PLUS ~10deg AoA to generate enough lift. I have to put a tail wheel to prevent from tail strike - in fact, the tail wheel has to touch the ground for the spaceplane to lift off.
- The actual Skylon design features an indented fuselage (peanut shape) common to supersonic aircraft (area rule, wave drag, all those fancy stuff). It's thus perhaps more realistic to remove the cargo bay flags and expose the Mk3 cross section. But in this case the indentation seems not so right (it should be limited to where the wing connects with the fuselage), and I personally prefer how it looks like right now. Anyway, it's all your choice.

上升：5°-10°-顺向
- Stage to start engines, gently rotate at 120m/s and let the tail wheel touch the ground. For heavy payload, pull up near the end of the runway, and keep pulling up until ~160m/s to achieve stable cruise flight.
- Keep aiming at 5 degrees pitch.
- It should accelerate to 400m/s at 1-2km altitude. Keep 5 degrees pitch until 10km altitude.
- At 10km, stay away from pitch control, let it pitch up to 10 degrees while accelerating, then keep this pitch.
- When speed hardly increases (~1420m/s @ 20km), press [1] to switch RAPIERs mode, [2] to fire vacuum engine. Keep aiming at 10 degrees pitch.
- Push AP to desired value, shut down engines, lock prograde and coast till circularization. 85km AP should be 6 minutes away.
- Use only the vacuum engine for orbital maneuvers. If you shut down the RAPIERs when AP reaches 50-60km and fire only the vacuum engine, an additional 50-100m/s dV saving can be achieved.

下降：40km PE 气动减速再入
- Burn PE to 40km above landing zone.
- Lock radial-out to aerobrake.
- When estimated impact point reaches landing zone, reduce AoA to 0-45°. 30°is good for maintaining impact point while effectively slowing down; 20°AoA pushes it further, >30°AoA draws it closer, 0°AoA corresponds a near-ballistic reentry path.
- Use RAPIERs in air-breathing mode when necessary.
- MouseAimFlight mod is highly recommended for final approach and landing.

希望喜欢，着陆愉快！