Development milestones
Designer: Rudolf Kaiser
First flight: February 1979
机型库Schleicher ASK 21
Huhu Uet · CC BY 3.0 · Schleicher ASK 21 picturedSchleicher ASK 21
A tandem two-seat sailplane designed for instruction and broader soaring use.
Glider配置文件选项：2 个
了解飞机
The ASK 21 has a glass-fibre structure, long wings, a T-tail and tandem seats for an instructor and student. The design also supports cross-country and aerobatic instruction within its operating limits.
X-Plane documents aerotow and winch launching for its implementation, together with instruments including the total-energy variometer.
Schleicher ASK 21 · Specifications (ASK 21) · real aircraft; source units retained
Linked sticks and spring trim
Schleicher's maintenance pages show the front and rear sticks connected mechanically, with rods and bellcranks transmitting elevator movement. The trim system uses two levers, a connecting rod and two springs. Its friction arrangement holds the selected trim position, while a separate indicator shows that setting. The accompanying drawing makes the relationship between both seats' sticks and trim levers visible. These are details of the manufacturer's documented mechanical arrangement, without assuming how a simulator or force-feedback device reproduces it.
A birthday solo after a lunch break resets the day
Elliott had spent months preparing for his first solo, including winter practice in a cockpit simulator and an intensive flying course. When his birthday arrived, nerves unsettled his early circuits. A lunch break with his father gave him a chance to relax before returning to the airfield for another attempt.
Three better flights followed. Expecting another check, he instead found his instructor closing the rear canopy and sending him off alone. In the air, attention to traffic and his position replaced the anticipation. Back on the ground, celebration included the club’s water and shirt traditions. The story makes the short flight significant through the preparation, family support and sudden change from pupil to solo pilot.
His parents arrive just in time for a long-awaited solo
Moving between countries, study and work had repeatedly interrupted Pinder’s progress towards solo flight. A friendly conversation at an airshow eventually led him to EZAC, where members welcomed him despite his limited Dutch. Regular flying and the club’s camps finally gave him the continuity he had been missing.
During a July camp, instructor David Lindberg asked whether he was ready to go alone. At almost that moment, his parents arrived by chance on a journey through the area. A successful landing brought an enormous shout of satisfaction after a wait stretching back twenty-four years. The club’s ceremonial tyre and a second solo flight completed an afternoon made memorable by the people there to share it.
An evening checkout between work and gathering rain
Finishing work early gave Kasprzyk a chance to hurry from his hotel to Booker before dusk and building clouds ended the flying. David Byass agreed to a checkout in the ASK21. Behind the towplane, Kasprzyk found it quiet and well balanced, with a reassuringly smooth climb despite the rutted grass below.
Rain and weakening lift limited the outing, but the surroundings supplied another kind of interest: a Blériot on the field and Concorde approaching Heathrow. Byass flew Concordes for work, giving the two pilots plenty to discuss alongside Kasprzyk’s fighter experience. After an easy return, the airfield pub provided shelter from the arriving downpour and a place to continue their conversation.
公开来源 10
- Schleicher ASK 21Research background · Wikipedia revision 1372986619 · retrieved 2026-09-12
- X-Plane 12 Desktop Manual
- X-Plane aircraft and avionics manuals
- X-Plane 11 Desktop Manual
- ASK21 continued airworthiness trim system bulletinSchleicher manual amendment pages, TN 11, 20 December 1983; stick/trim drawing dated 9 March 1983
- Gearing Up for My Glider SoloRyan Elliott · 9 May 2017
- My long journey to finally going solo in a glider3 February 2020; recollection of July 2018 first solo
- Soaring in the UK - May 1999Stan Kasprzyk · Booker checkout with David Byass
- ICAO — special designatorsGlider and motorglider categories; checked 2026-09-14
- f7 Simulations ASK 21 for MSFS-2020 – iniBuilds StoreProduct listing captured 2026-09-30; edition scope from the reviewed catalogue
配置文件如何建模
f7 Simulations Schleicher ASK 21
Free + ProMSFS 2020f7 Simulations
The ASK 21 has a glass-fibre structure, long wings, a T-tail and tandem seats for an instructor and student. The design also supports cross-country and aerobatic instruction within its operating limits.
This profile selects f7 Simulations Schleicher ASK 21 for MSFS 2020.
The profile supplies the glider’s selected stick balance. Spring resistance builds with the selected airspeed response. A separate aerodynamic term adds speed-dependent control load.
Spring trim supplies pitch context rather than an external elevator tab. Pitch-trim relief is off. Autopilot following is off.
此确切修订版尚未开放公开安装。
Controls and trim
The ASK21 is a two-seat aerobatic glider with fixed-wheel landing gear, spoilers and no engine or wing flaps in the reviewed configuration. Its pitch spring-trim arrangement is distinct from an elevator-tab aircraft.
The selected implementation
f7’s ASK 21 is a two-seat aerobatic glider with spoilers and fixed wheels. It has neither an engine nor wing flaps.
About the values
The gains are normalized profile settings. They describe the chosen effect balance; hand force depends on the device and its output limits. IAS references are tuning values rather than operating limits. Physical acceptance of this revision remains pending.
Master gain & control system
Master gain85%
施加于模型产出的一切、在设备上限之前的最终整体输出缩放。
调高: 一切(弹簧、载荷、效果)一同增强。
调低: 一切一同变柔。
设定理由: Scales overall profile strength while preserving effect balance, subject to device and output limits.
Forces
Spring strength74%
把摇杆拉回中央的基础回中力。其他所有力都叠加在它之上。太低,正常飞行中摇杆会发软;太高,它会与你的手较劲,并掩盖叠加其上的细微提示。
调高: 更硬的回中,更抗手。
调低: 更软的杆,只靠气动载荷。
设定理由: The profile supplies the glider’s selected stick balance. The baseline spring is 0.74. Its low-speed blend reaches baseline strength at 35 KIAS.
f7 Simulations ASK 21 for MSFS-2020Spring deadband4%
中央附近弹簧保持安静的小中立区,让静止时的微小移动不会咔嗒作响。更宽更安稳但更松,更窄更精确但可能在中央附近抖动。
调高: 更安静但更松的中央,旷量更大。
调低: 更紧的中央,静止时可能抖动。
设定理由: Sets travel around the centre before the baseline spring resists. Smaller values engage it sooner.
Overall aerodynamic load80%
作用于两条持续轴载荷的主缩放,在它们各自的独立平衡之前施加。配置文件通常不动它,而是调校两条轴载荷。
调高: 两轴载荷一同加重。
调低: 两轴一同减轻。
设定理由: The aerodynamic-load gain is 0.8 with an indicated-speed reference of 70 KIAS. This supplies speed-dependent loading alongside the spring.
Airspeed blendingTrue
启用低速弹簧介入窗口(上面的起始/全强度节数)。关闭时弹簧在所有速度下恒定。
设定理由: Allows baseline spring strength to rise with indicated airspeed where the control law permits it.
Low-speed spring floor55%
在静止、空速尚未产生气动力之前,弹簧还剩多少。下限高,停机时摇杆结实;下限低,则是停放轻型飞机那种钢索松弛的感觉。
调高: 停机和滑行时杆更结实。
调低: 停机时杆发软,只随速度苏醒。
设定理由: Sets low-speed spring strength as a fraction of baseline when blending is enabled. One keeps full strength.
Spring engagement start8 kt
弹簧从低速下限开始向全强度攀升的空速:起飞滑跑中操纵面"苏醒"的那一刻。
设定理由: Sets the IAS where the low-speed spring blend starts rising. This is a feel threshold, not a flight limit.
Spring engagement full35.0 kt
弹簧达到全强度的空速。从起点到这里,随着气流在操纵面上增强,回中逐渐变硬。
设定理由: Sets the IAS where the low-speed blend reaches baseline strength; high-speed stiffening also uses it.
力反馈调校速度70
气动载荷达到设计满值的指示空速。它把整条载荷曲线锚定在飞机真实的速度范围:172在110节就载满,喷气机要晚得多。
调高: 载荷来得更晚;杆轻到更高速度。
调低: 载荷来得更早,巡航更沉。
设定理由: Sets the IAS reference for aerodynamic loading. It is an estimate, not published cruise TAS or a flight limit.
Centre firmness vs speed15%
在偏转载荷之外,回中本身随速度变硬的程度。零则中央手感恒定;越大,巡航时回中越硬,起落航线上越松。
调高: 中央随速度明显变硬。
调低: 任何速度下中央手感恒定。
设定理由: The high-speed spring-stiffening gain is 0.15. It strengthens the permitted spring response above 35 KIAS, with the squared-speed ratio capped at 5.
Centre stiffening cap5
速度驱动的中央变硬上限,防止高速飞行把弹簧无限上紧。
调高: 高速允许更多总硬化。
调低: 硬化更早封顶。
设定理由: Limits the squared airspeed ratio used for high-speed spring stiffening; it is not a device-force cap.
Aileron load72%
由副翼偏转和空速产生的持续横滚载荷,独立于俯仰调校。与升降舵载荷一起,决定评测中常说的操纵协调比。
调高: 横滚力更重。
调低: 副翼更轻更灵。
设定理由: Roll and pitch aerodynamic scales are 0.72 and 1, respectively. They set the aerodynamic axis balance. No custom spring-travel curve is enabled.
Elevator load100%
由升降舵偏转和空速产生的持续俯仰载荷,独立于横滚调校。这是决定机型俯仰重量的主杠杆。它不影响副翼、弹簧、配平或抖振力。
调高: 速度下持续俯仰力更重。
调低: 升降舵更轻,握持更省力。
设定理由: Scales pitch aerodynamic loading; pitch spring travel and trim responses are separate settings.
Max output force55%
每个稳态俯仰或横滚力到达设备前的上限,防止猛烈机动中砸击或饱和硬件。
调高: 削波前更高的稳态力峰值。
调低: 更柔的上限;猛烈机动更早被抹平。
设定理由: Caps directed-force output. Native spring effects and device limits remain separate.
Trim
Trim relief (elevator)0%
升降舵配平缓解持续俯仰力、移动杆的安定位置的强度。在100 %时,配平得当的飞机不需要保持压力——正是真实飞行中"用配平消掉载荷"的流程。
调高: 配平消掉更多持续力;100 %时满配平可完全抵消。
调低: 即使配平也仍要持续用力。
设定理由: Spring trim supplies pitch context rather than an external elevator tab. Pitch relief is off, with stored authority 0; roll authority is 0.
f7 Simulations ASK 21 for MSFS-2020Trim relief (aileron)0%
横滚配平的同类缓解。多数通航机型没有真正的副翼配平,所以保持为零;有横滚配平的机型获得相应的值。
调高: 横滚配平消掉更多持续力。
调低: 横滚配平作用更小。
设定理由: Scales supported roll-trim relief and permitted centre movement. Zero removes roll response.
Effect gains · Ground
Runway rumble40%
由轮速和地面类型(铺装、草地、砾石)产生的滚动振动。
调高: 杆上更强的地面质感。
调低: 更平滑的滑行。
设定理由: Sets rolling texture strength, modified by speed, surface and undercarriage configuration.
Gear bumps25%
来自伸缩缝、车辙和粗糙地面的短促离散颠簸,为持续隆隆声打上标点。
调高: 接缝与车辙的冲击更清晰。
调低: 更柔的地面细节。
设定理由: Sets gear-bump texture during ground motion, separate from touchdown impact.
Effect gains · Airframe
Stall buffet35%
接近失速及失速警告响起时的机体抖动:这副机翼宣告不满的音量。断失干脆的机型抖振收敛,让喇叭承担警告。
调高: 更强的失速前颤抖。
调低: 更含蓄的机翼;警告交给喇叭。
设定理由: Sets stall-buffet strength. Zero removes the cue without changing simulator stalls or warnings.
Mach buffet0%
接近马赫极限的跨音速抖振。对接近MMO的喷气机有意义,对到不了那里的活塞机和涡桨机为零。
调高: 接近马赫极限时更强的跨音速抖振。
调低: 高马赫下更平滑的飞行。
设定理由: Sets high-Mach buffet strength; onset and full-strength thresholds are separate.
Flap buffet0%
襟翼伸入气流后机体的低频振动,发生在它们真正做功的速度窗口内。
调高: 襟翼做功时更粗糙的飞行。
调低: 更柔的进近襟翼。
设定理由: Sets flap buffet at the configured position and speed gates. Flap movement texture is separate.
Gear buffet0%
可收放起落架悬在气流中引起的机体鼓振。固定起落架机型为零,它们的机体外形从不改变。
调高: 放起落架时更多鼓振。
调低: 放起落架飞行更干净。
设定理由: Sets gear aerodynamic buffet; movement and ground-contact cues are separate.
Stick shaker50%
由飞机自身失速警告系统触发的专用抖杆器振动。只有真有抖杆器的机型才有值;其余全靠气动抖振和喇叭。
调高: 更硬的抖杆器。
调低: 更含蓄的抖杆器。
设定理由: Sets triggered shaker strength; inactive while the shaker feature is disabled.
Effect gains · Engine, mechanical & drag
Touchdown thump65%
机轮触及跑道那一下的单次冲击,按下沉率缩放:轻柔着陆是耳语,结实到达是一记闷响。
调高: 触地时更硬的一击。
调低: 更柔的到达。
设定理由: Sets landing-impact strength; landing telemetry and response shape determine the pulse.
Reverse rumble0%
反推或桨叶beta区工作时的滑跑振动。无反推机型为零。
调高: 反推下更粗糙的滑跑。
调低: 更含蓄的反推。
设定理由: Sets reverse-thrust vibration with valid reverser and engine conditions. Zero removes the cue.
Engine rumble0%
从慢车到全功率跟随转速的持续动力装置振动——前方有东西在烧油的永恒提醒。
调高: 杆里更多发动机。
调低: 更含蓄的发动机。
设定理由: Sets estimated engine vibration using configured telemetry and response, not measured cockpit vibration.
Flap motion0%
仅在模拟器报告襟翼舵面确实移动时的持续振动。它跟随真实作动器的运动和故障,而非估算的计时器。
调高: 襟翼移动中更多振动。
调低: 更含蓄的襟翼行程。
设定理由: Sets texture from observed flap movement; a command without movement does not establish the cue.
Autopilot follow
AP follow authority10%
自动驾驶指令可以让杆实际移动多远。在MSFS中保持极小,因为移动的轴可能被读回为飞行员输入;零则完全禁用跟随。
调高: 自动驾驶让你的杆移动得明显更多。
调低: 几乎察觉不到的跟随。
设定理由: Sets admitted AP-follow gain, not a percentage of travel. Runtime ownership and input limits still apply.
Stick feel
StickFeel · Trim feel enabledFalse
Whether this feature is active in this profile.
设定理由: Retained for compatibility and group membership. Trim relief, rather than this flag, controls centre movement.
StickFeel · Trim relief enabledFalse
Whether this feature is active in this profile.
设定理由: Allows trim relief with supported control law and valid telemetry. Axis authorities set its amount.
StickFeel · Force trim enabledFalse
Whether this feature is active in this profile.
设定理由: Enables local force trim, separate from aircraft-owned trim and add-on integration qualification.
StickFeel · G load enabledTrue
Whether this feature is active in this profile.
设定理由: Allows load-factor changes to modify permitted spring laws. Passive fly-by-wire feel can suppress it.
StickFeel · Rate damping enabledTrue
Whether this feature is active in this profile.
设定理由: Enables rate damping with the configured coefficients and control law.
Autopilot
Autopilot · Follow enabledFalse
Whether this feature is active in this profile.
设定理由: Autopilot following is off; the configured spring and load retain the hardware feel.
Autopilot · Neutral hold enabledFalse
Whether this feature is active in this profile.
设定理由: Permits centering hold during a supported AP state, separate from following a moving target.
Autopilot · Neutral hold strength0.6
设定理由: Sets admitted AP neutral-hold strength; inactive while neutral hold is disabled.
Aero
Aero · EnabledTrue
Whether this feature is active in this profile.
设定理由: Enables aerodynamic cues; each still needs nonzero strength and its simulator conditions.
Aero · Max flap index3
Where this effect reaches full strength (or has fully faded, for washouts).
调高: a more gradual build to a later peak.
调低: a quicker build.
设定理由: Sets the final flap index for detent normalization. UP plus three detents uses maximum index3.
Aero · Min flap index2
Where this effect begins fading in.
调高: the effect begins later.
调低: it begins earlier.
设定理由: Sets the first flap detent that admits buffet; this is a handle index, not degrees.
Aero · Shaker enabledFalse
Whether this feature is active in this profile.
设定理由: Permits shaker at supported warning conditions; the switch does not establish aircraft equipment.
Ground
Ground · EnabledTrue
Whether this feature is active in this profile.
设定理由: Enables ground effects; each still needs its own strength and contact or motion telemetry.
Engine
Engine · EnabledFalse
Whether this feature is active in this profile.
设定理由: Enables engine cues with nonzero settings and valid running-engine telemetry.
Mechanical
Mechanical · EnabledTrue
Whether this feature is active in this profile.
设定理由: Enables accessory cues with configured strengths and observed accessory movement.
Mechanical · Gain0
The strength of this effect.
调高: a stronger effect.
调低: a weaker one.
设定理由: Sets texture from observed gear movement, separate from aerodynamic and touchdown effects.
全部配置文件设置
| 参数 | 数值 | 控制作用及原因 |
|---|---|---|
| Spring strength | 0.74 | The profile supplies the glider’s selected stick balance. The baseline spring is 0.74. Its low-speed blend reaches baseline strength at 35 KIAS. |
| Spring deadband | 0.04 | Sets travel around the centre before the baseline spring resists. Smaller values engage it sooner. |
| Force gain | 0.8 | The aerodynamic-load gain is 0.8 with an indicated-speed reference of 70 KIAS. This supplies speed-dependent loading alongside the spring. |
| Master gain | 0.85 | Scales overall profile strength while preserving effect balance, subject to device and output limits. |
| Dynamic-pressure blend | True | Allows baseline spring strength to rise with indicated airspeed where the control law permits it. |
| Minimum spring factor | 0.55 | Sets low-speed spring strength as a fraction of baseline when blending is enabled. One keeps full strength. |
| Spring wake-up speed | 8 kt | Sets the IAS where the low-speed spring blend starts rising. This is a feel threshold, not a flight limit. |
| Spring full-strength speed | 35.0 kt | Sets the IAS where the low-speed blend reaches baseline strength; high-speed stiffening also uses it. |
| 力反馈调校速度 | 70 kt | Sets the IAS reference for aerodynamic loading. It is an estimate, not published cruise TAS or a flight limit. |
| Airspeed spring stiffening | 0.15 | The high-speed spring-stiffening gain is 0.15. It strengthens the permitted spring response above 35 KIAS, with the squared-speed ratio capped at 5. |
| Airspeed stiffening cap | 5 | Limits the squared airspeed ratio used for high-speed spring stiffening; it is not a device-force cap. |
| Aileron force scale | 0.72 | Roll and pitch aerodynamic scales are 0.72 and 1, respectively. They set the aerodynamic axis balance. No custom spring-travel curve is enabled. |
| Elevator force scale | 1.0 | Scales pitch aerodynamic loading; pitch spring travel and trim responses are separate settings. |
| Maximum output force | 0.55 | Caps directed-force output. Native spring effects and device limits remain separate. |
| StickFeel · Trim feel enabled | False | Retained for compatibility and group membership. Trim relief, rather than this flag, controls centre movement. |
| StickFeel · Trim relief enabled | False | Allows trim relief with supported control law and valid telemetry. Axis authorities set its amount. |
| StickFeel · Elevator authority | 0 | Spring trim supplies pitch context rather than an external elevator tab. Pitch relief is off, with stored authority 0; roll authority is 0. |
| StickFeel · Aileron authority | 0 | Scales supported roll-trim relief and permitted centre movement. Zero removes roll response. |
| StickFeel · Force trim enabled | False | Enables local force trim, separate from aircraft-owned trim and add-on integration qualification. |
| StickFeel · G load enabled | True | Allows load-factor changes to modify permitted spring laws. Passive fly-by-wire feel can suppress it. |
| StickFeel · Rate damping enabled | True | Enables rate damping with the configured coefficients and control law. |
| Autopilot · Follow enabled | False | Autopilot following is off; the configured spring and load retain the hardware feel. |
| Autopilot · Follow authority | 0.1 | Sets admitted AP-follow gain, not a percentage of travel. Runtime ownership and input limits still apply. |
| Autopilot · Neutral hold enabled | False | Permits centering hold during a supported AP state, separate from following a moving target. |
| Autopilot · Neutral hold strength | 0.6 | Sets admitted AP neutral-hold strength; inactive while neutral hold is disabled. |
| Aero · Enabled | True | Enables aerodynamic cues; each still needs nonzero strength and its simulator conditions. |
| Aero · Gain | 0.35 | Sets stall-buffet strength. Zero removes the cue without changing simulator stalls or warnings. |
| Aero · Gain | 0 | Sets high-Mach buffet strength; onset and full-strength thresholds are separate. |
| Aero · Gain | 0 | Sets flap buffet at the configured position and speed gates. Flap movement texture is separate. |
| Aero · Max flap index | 3 | Sets the final flap index for detent normalization. UP plus three detents uses maximum index3. |
| Aero · Min flap index | 2 | Sets the first flap detent that admits buffet; this is a handle index, not degrees. |
| Aero · Gain | 0 | Sets gear aerodynamic buffet; movement and ground-contact cues are separate. |
| Aero · Shaker enabled | False | Permits shaker at supported warning conditions; the switch does not establish aircraft equipment. |
| Aero · Amplitude | 0.5 | Sets triggered shaker strength; inactive while the shaker feature is disabled. |
| Ground · Enabled | True | Enables ground effects; each still needs its own strength and contact or motion telemetry. |
| Ground · Gain | 0.4 | Sets rolling texture strength, modified by speed, surface and undercarriage configuration. |
| Ground · Gain | 0.25 | Sets gear-bump texture during ground motion, separate from touchdown impact. |
| Ground · Gain | 0.65 | Sets landing-impact strength; landing telemetry and response shape determine the pulse. |
| Ground · Gain | 0 | Sets reverse-thrust vibration with valid reverser and engine conditions. Zero removes the cue. |
| Engine · Enabled | False | Enables engine cues with nonzero settings and valid running-engine telemetry. |
| Engine · Gain | 0 | Sets estimated engine vibration using configured telemetry and response, not measured cockpit vibration. |
| Mechanical · Enabled | True | Enables accessory cues with configured strengths and observed accessory movement. |
| Mechanical · Gain | 0 | Sets texture from observed flap movement; a command without movement does not establish the cue. |
| Mechanical · Gain | 0 | Sets texture from observed gear movement, separate from aerodynamic and touchdown effects. |
公开来源 10
- Schleicher ASK 21Research background · Wikipedia revision 1372986619 · retrieved 2026-09-12
- f7 Simulations ASK 21 for MSFS-2020Exact product and reviewed configuration passagesProduct listing captured 2026-09-30; edition scope from the reviewed catalogue
- X-Plane 12 Desktop Manual
- X-Plane aircraft and avionics manuals
- X-Plane 11 Desktop Manual
- ASK21 continued airworthiness trim system bulletinSchleicher manual amendment pages, TN 11, 20 December 1983; stick/trim drawing dated 9 March 1983
- Gearing Up for My Glider SoloRyan Elliott · 9 May 2017
- My long journey to finally going solo in a glider3 February 2020; recollection of July 2018 first solo
- Soaring in the UK - May 1999Stan Kasprzyk · Booker checkout with David Byass
- ICAO — special designatorsGlider and motorglider categories; checked 2026-09-14
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