Development milestones
Designer: Rudolf Kaiser
First flight: February 1979
機型庫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設定檔選項：2 個
瞭解飛機
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.
公開來源 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
設定檔如何建模
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.
此確切修訂版尚未開放公開安裝。
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%
施加於模型產出的一切、在裝置上限之前的最終整體輸出縮放。
調高: 一切(彈簧、載荷、效果)一同增強。
調低: 一切一同變柔。
設定理由: Scales overall profile strength while preserving effect balance, subject to device and output limits.
Forces
Spring strength74%
把搖桿拉回中央的基礎回中力。其他所有力都疊加在它之上。太低,正常飛行中搖桿會發軟;太高,它會與你的手較勁,並掩蓋疊加其上的細微提示。
調高: 更硬的回中,更抗手。
調低: 更軟的桿,只靠氣動載荷。
設定理由: 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%
中央附近彈簧保持安靜的小中立區,讓靜止時的微小移動不會咔嗒作響。更寬更安穩但更松,更窄更精確但可能在中央附近抖動。
調高: 更安靜但更松的中央,曠量更大。
調低: 更緊的中央,靜止時可能抖動。
設定理由: Sets travel around the centre before the baseline spring resists. Smaller values engage it sooner.
Overall aerodynamic load80%
作用於兩條持續軸載荷的主縮放,在它們各自的獨立平衡之前施加。設定檔通常不動它,而是調校兩條軸載荷。
調高: 兩軸載荷一同加重。
調低: 兩軸一同減輕。
設定理由: 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
啟用低速彈簧介入視窗(上面的起始/全強度節數)。關閉時彈簧在所有速度下恆定。
設定理由: Allows baseline spring strength to rise with indicated airspeed where the control law permits it.
Low-speed spring floor55%
在靜止、空速尚未產生氣動力之前,彈簧還剩多少。下限高,停機時搖桿結實;下限低,則是停放輕型飛機那種鋼索鬆弛的感覺。
調高: 停機和滑行時桿更結實。
調低: 停機時桿發軟,只隨速度甦醒。
設定理由: Sets low-speed spring strength as a fraction of baseline when blending is enabled. One keeps full strength.
Spring engagement start8 kt
彈簧從低速下限開始向全強度攀升的空速:起飛滑跑中操縱面"甦醒"的那一刻。
設定理由: 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
彈簧達到全強度的空速。從起點到這裡,隨著氣流在操縱面上增強,回中逐漸變硬。
設定理由: Sets the IAS where the low-speed blend reaches baseline strength; high-speed stiffening also uses it.
力回饋調校速度70
氣動載荷達到設計滿值的指示空速。它把整條載荷曲線錨定在飛機真實的速度範圍:172在110節就載滿,噴氣機要晚得多。
調高: 載荷來得更晚;桿輕到更高速度。
調低: 載荷來得更早,巡航更沉。
設定理由: Sets the IAS reference for aerodynamic loading. It is an estimate, not published cruise TAS or a flight limit.
Centre firmness vs speed15%
在偏轉載荷之外,回中本身隨速度變硬的程度。零則中央手感恆定;越大,巡航時回中越硬,起落航線上越松。
調高: 中央隨速度明顯變硬。
調低: 任何速度下中央手感恆定。
設定理由: 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
速度驅動的中央變硬上限,防止高速飛行把彈簧無限上緊。
調高: 高速允許更多總硬化。
調低: 硬化更早封頂。
設定理由: Limits the squared airspeed ratio used for high-speed spring stiffening; it is not a device-force cap.
Aileron load72%
由副翼偏轉和空速產生的持續橫滾載荷,獨立於俯仰調校。與升降舵載荷一起,決定評測中常說的操縱協調比。
調高: 橫滾力更重。
調低: 副翼更輕更靈。
設定理由: 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%
由升降舵偏轉和空速產生的持續俯仰載荷,獨立於橫滾調校。這是決定機型俯仰重量的主槓桿。它不影響副翼、彈簧、配平或抖振力。
調高: 速度下持續俯仰力更重。
調低: 升降舵更輕,握持更省力。
設定理由: Scales pitch aerodynamic loading; pitch spring travel and trim responses are separate settings.
Max output force55%
每個穩態俯仰或橫滾力到達裝置前的上限,防止猛烈機動中砸擊或飽和硬體。
調高: 削波前更高的穩態力峰值。
調低: 更柔的上限;猛烈機動更早被抹平。
設定理由: Caps directed-force output. Native spring effects and device limits remain separate.
Trim
Trim relief (elevator)0%
升降舵配平緩解持續俯仰力、移動桿的安定位置的強度。在100 %時,配平得當的飛機不需要保持壓力——正是真實飛行中"用配平消掉載荷"的流程。
調高: 配平消掉更多持續力;100 %時滿配平可完全抵消。
調低: 即使配平也仍要持續用力。
設定理由: 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%
橫滾配平的同類緩解。多數通航機型沒有真正的副翼配平,所以保持為零;有橫滾配平的機型獲得相應的值。
調高: 橫滾配平消掉更多持續力。
調低: 橫滾配平作用更小。
設定理由: Scales supported roll-trim relief and permitted centre movement. Zero removes roll response.
Effect gains · Ground
Runway rumble40%
由輪速和地面型別(鋪裝、草地、礫石)產生的滾動振動。
調高: 桿上更強的地面質感。
調低: 更平滑的滑行。
設定理由: Sets rolling texture strength, modified by speed, surface and undercarriage configuration.
Gear bumps25%
來自伸縮縫、車轍和粗糙地面的短促離散顛簸,為持續隆隆聲打上標點。
調高: 接縫與車轍的衝擊更清晰。
調低: 更柔的地面細節。
設定理由: 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響起時的機體抖動:這副機翼宣告不滿的音量。斷失乾脆的機型抖振收斂,讓喇叭承擔警告。
調高: 更強的失速前顫抖。
調低: 更含蓄的機翼;警告交給喇叭。
設定理由: Sets stall-buffet strength. Zero removes the cue without changing simulator stalls or warnings.
Mach buffet0%
接近馬赫極限的跨音速抖振。對接近MMO的噴氣機有意義,對到不了那裡的活塞機和渦槳機為零。
調高: 接近馬赫極限時更強的跨音速抖振。
調低: 高馬赫下更平滑的飛行。
設定理由: Sets high-Mach buffet strength; onset and full-strength thresholds are separate.
Flap buffet0%
襟翼伸入氣流後機體的低頻振動,發生在它們真正做功的速度視窗內。
調高: 襟翼做功時更粗糙的飛行。
調低: 更柔的進近襟翼。
設定理由: Sets flap buffet at the configured position and speed gates. Flap movement texture is separate.
Gear buffet0%
可收放起落架懸在氣流中引起的機體鼓振。固定起落架機型為零,它們的機體外形從不改變。
調高: 放起落架時更多鼓振。
調低: 放起落架飛行更乾淨。
設定理由: Sets gear aerodynamic buffet; movement and ground-contact cues are separate.
Stick shaker50%
由飛機自身失速警告系統觸發的專用抖桿器振動。只有真有抖桿器的機型才有值;其餘全靠氣動抖振和喇叭。
調高: 更硬的抖桿器。
調低: 更含蓄的抖桿器。
設定理由: Sets triggered shaker strength; inactive while the shaker feature is disabled.
Effect gains · Engine, mechanical & drag
Touchdown thump65%
機輪觸及跑道那一下的單次衝擊,按下沉率縮放:輕柔著陸是耳語,結實到達是一記悶響。
調高: 觸地時更硬的一擊。
調低: 更柔的到達。
設定理由: Sets landing-impact strength; landing telemetry and response shape determine the pulse.
Reverse rumble0%
反推或槳葉beta區工作時的滑跑振動。無反推機型為零。
調高: 反推下更粗糙的滑跑。
調低: 更含蓄的反推。
設定理由: Sets reverse-thrust vibration with valid reverser and engine conditions. Zero removes the cue.
Engine rumble0%
從慢車到全功率跟隨轉速的持續動力裝置振動——前方有東西在燒油的永恆提醒。
調高: 桿裡更多引擎。
調低: 更含蓄的引擎。
設定理由: Sets estimated engine vibration using configured telemetry and response, not measured cockpit vibration.
Flap motion0%
僅在模擬器報告襟翼舵面確實移動時的持續振動。它跟隨真實作動器的運動和故障,而非估算的計時器。
調高: 襟翼移動中更多振動。
調低: 更含蓄的襟翼行程。
設定理由: Sets texture from observed flap movement; a command without movement does not establish the cue.
Autopilot follow
AP follow authority10%
自動駕駛指令可以讓桿實際移動多遠。在MSFS中保持極小,因為移動的軸可能被讀回為飛行員輸入;零則完全停用跟隨。
調高: 自動駕駛讓你的桿移動得明顯更多。
調低: 幾乎察覺不到的跟隨。
設定理由: 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.
設定理由: 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.
設定理由: 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.
設定理由: 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.
設定理由: 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.
設定理由: Enables rate damping with the configured coefficients and control law.
Autopilot
Autopilot · Follow enabledFalse
Whether this feature is active in this profile.
設定理由: 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.
設定理由: Permits centering hold during a supported AP state, separate from following a moving target.
Autopilot · Neutral hold strength0.6
設定理由: Sets admitted AP neutral-hold strength; inactive while neutral hold is disabled.
Aero
Aero · EnabledTrue
Whether this feature is active in this profile.
設定理由: 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).
調高: a more gradual build to a later peak.
調低: a quicker build.
設定理由: 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.
調高: the effect begins later.
調低: it begins earlier.
設定理由: 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.
設定理由: Permits shaker at supported warning conditions; the switch does not establish aircraft equipment.
Ground
Ground · EnabledTrue
Whether this feature is active in this profile.
設定理由: 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.
設定理由: Enables engine cues with nonzero settings and valid running-engine telemetry.
Mechanical
Mechanical · EnabledTrue
Whether this feature is active in this profile.
設定理由: Enables accessory cues with configured strengths and observed accessory movement.
Mechanical · Gain0
The strength of this effect.
調高: a stronger effect.
調低: a weaker one.
設定理由: Sets texture from observed gear movement, separate from aerodynamic and touchdown effects.
全部設定檔設定
| 引數 | 數值 | 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. |
| 力回饋調校速度 | 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. |
公開來源 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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