最近透過網上海外郵購一套trainning manual...雖然價錢昂貴，但我仍覺得物超所值，要1.2k連運費。比起我買十隻新機更加開心及學到野。

　

粗略全部睇下，最後選擇先睇Park Flying 1-2-3D，因為比較合我衣家飛緊既機種。

　

呢本書對象係決定由park fly入門既人，由握控，機種分類，翼型特性，基本起飛降落，簡單花式飛行，深入至遙控mixing，失速類3D飛行，非常全面，而且教程好有系統，飛得晒呢一本書，已經係見得下人既高手，從而我覺得我衣家先至係真真正正學飛，玩左4,5先有咁既感覺，真係有D慚愧，跟呢套書可謂相逢恨晚。雖然係咁講，但呢本書比我呢D半桶水既所謂老手來講就更加有用，當中有好多錯誤分析，只要可以解決到D好細微細眼既錯誤動作，就會飛得好，分析問題及成因，再針對解決，有D動作加上打數口訣，令動作做起上來節奏更準，更加亮麗。可以話係每一頁都咁精彩，每一頁都學到野。（起碼學到英文）

　

睇完一頁頁秘笈，係時候練功。開始係電腦練sim，已經明顯覺我自己有進步，特別係loop同roll，由於已有少少底子，跟據書上既貼士及錯誤分析，已可對自己技術有所改善，之前陋習太多。

　

至於飛實機，問題就出來．．．下次再講。

近期睇到以下文章, 講解Aerobatics飛機基本設定...

You will be low and slow thus each input to your plane can have dire consequences. Practice up high, but get as low as possible as soon as possible but be confident in your flying before getting too low.

The lower (lighter) the wing loading the better. Power is not as important as wing loading. If you flop out of a maneuver, a low wing loading prevents stalling. A light plane will allow you to not lose any altitude when falling out of a maneuver, it simply starts flying immediately without having to build up speed to get flying again. Power is good for show, but it won't save a heavy plane in a bad position like low weight will. As long as you have enough power to maintain a hover, you have enough power.

Get a simulator. Practicing hovering on a simulator is often harder than with many planes. Master it on the computer and you will have an easy time flying your plane.
Set your radio up for lots of throw and experiment. Certain designs do better than others. The bigger the better too. You can get a gyro, once you are an expert, sell it.

Hovering and torque rolling are the most difficult. Once you've practiced on the simulator, practice with your plane. The closer you are to the plane, the easier it is to see and make corrections, but the shorter the distant to destruction. There's no substitute for practice when it comes to 3D. It typically takes a thousand attempts or more at hovering to become good.

Experiment and practice with your plane until you learn everything you can about it.

FIRST STEP: Programming your radio for 3D flying is key to being an awesome 3D pilot. See our webpage on programming your radio first.

SECOND STEP: Trimming out your plane for 3D flying is critical to being an awesome pilot. Right thrust and up thrust must be optimized. Perfect right thrust and up thrust for hovering is different than for sequence flying though they are close. This cannot be changed on a day to day basis, so you need to decide what is most important to you. It's easier to fly sequence with 3D right thrust and upthrust than it is to fly 3D with sequence right thrust and upthrust, so if you are primarily interested in 3D, trim the plane out as follows: On a day when there is little or no wind, fly level to the center of the field at a slow speed, pull to vertical and roll to see the canopy of the plane as if you were going to do a hammer. Let the plane slow to almost a stop. Go to full throttle and let go of the sticks and fly for several seconds. If the plane veers right of left, adjust the rudder to keep the plane vertical. Do this 10 to 20 times to be sure. Then put washers under the engine mount to put in about 1/2 the angle that the rudder is (if the rudder is deflected 4 degrees, change the engine thrust by 2 degrees). Do not line up the cowl yet with the spinner backplate. Do another flying test and make adjustments until the plane goes exactly straight up when you apply throttle. Follow the same guidelines for setting the upthrust. You need upthrust based on the CG of your plane as it hangs from the propeller. If you picked up the prop and let the plane hang vertically as in a torque roll (TR), if all the components inside the plane were in proper position, the plane would point straight up and the engine thrust line would be right through the CG. This probably isn't the case so change the engine thrust (you probably need upthrust) so that the plane doesn't keep falling forward to the belly when in a TR.

THIRD STEP: You should be good with the rudder. Learn rudder skills by following the steps above. You especially need rudder skills when the belly of the plane is towards you. Doing belly in hammer heads is good practice. Fly back and forth across the field inverted and do hammer heads at each end. Keep the uplines straight (using the rudder) and hammer while under control the direction that you choose.

飛左架Hyperion Yak 55 SP 25E 都將近90次升降，最近先掌握到用呢部機做好靚既Flat Spin。
以前睇資料教點做Flat Spin，都係教Rudder and Elevator full travel，油門控制螺旋速度的快慢，但一路都做得唔靚，睇老外飛行片段真係可以做到Spin緊既時候機身保持水平，一路都會諗，係部機做唔到，定係舵面角度唔夠大．．．記得有次JEFF話睇個老外教打埋副翼，用副翼壓平機身，之前用RUSH試過，都好似唔多有效。

上兩個星期用架25E無意中試到打埋副翼真係可以做得好靚，但打副翼係要調校機身水平，過多過少都唔得，等我試下用文字講下成個動作我係點做．．．

垂直爬升高度，收油至1/4，用升降舵推架機向下，當機頭指向下時，同時打100%左方向舵和升舵，機身開始進入螺旋，此時機體不會放平，而且下降速度頗高，打少少右副翼，把機身調整壓平，同時慢慢增加油門動力，此時機體會因應副翼的補償而放平，當機體可以放平螺旋時，下降速度亦會減慢，最後當增至全油門時，架機就會好似以螺旋槳為圓心做Spin，加埋螺旋槳的風聲，真的很爽！！如收晒油門去Spin，下降速度應該會效快，機身會效難保持水平，可能無咁靚．．．

我覺得每部機做Spin或者其他花式，操控上應該會有所不同，以25E既方法，用在Twin Dragon上，就不太有效。大家都只打升舵及方向舵，收油，TD 會比25E做得好，但機身都唔夠平，TD要再多花點時間掌握．．．

將來EDGE SPIN會更難試到每架機做既方法．．．SIM又好難幫到手．．

喺香港玩飛機花式飛行有啲難度, 一來無適合場地, 二來唔係咁易搵到師父教導及指點...

香港係有正式飛行場地, 不過入會費高昂, 未必咁多飛友願意或有能力負擔...

最後, 學習Aerobatics, 唯有靠自己, 睇多啲, 思考多啲, 練習多啲...

幾個月前, 訂咗兩本書, 專門講解Aerobatics, 有基本入門守則, 亦有理論, 對初學者至中級, 都可以用嚟作參考...

第一本係"Radio Control Aerobatics for Everyone" by Dave Patrick...
呢本書比較舊, 不過佢有講解點樣去調教架機, 例如"Throws and Servo Linkages", "Confirming Proper CG", "How to Trim Your Plane for Optimal Rudder Response"及"Expo, Dual Rates"等...
基本嘅飛行要則亦有講解, 如"Crosswind Takeoffs"及"Landing in Crosswind"...
最精彩嘅當然係解說Aerobatics嘅部份, 包括"Slow Roll", "Stall Turn", "Spin"及"Snap Roll"...
更高深有"Torque Roll", "Rolling Circle", "Lomecevak"及"Tailslide"...
雖然Aerobatics比較舊, 但亦係最基本嘅動作...

另一本係"Ultimate RC Flight Guide"...
呢本書更加精彩, 開頭部份提及"Weather considerations", "Flying on a windy day"及"Trim your model for precision aerobatics"...
由於本書有介紹IMAC及TOC比賽, 所以有講及"Get ready for flight competition"及"Maximize your flight scores"...
至於Aerobatics部份, 都有詳細講解, 如"Straight and level flight", "Cross-box maneuvers", "Snap roll", "Rolling circle", "Tail slides", "Spin", "Torque roll", "Figure-9", "Figure-N", "Shark's tooth"及"Immelmann and split-S"...
另一精彩部份係講解Radio Programming, 對新手相當有用, 老手亦可以溫故知新, 包括"Program a mixer", "How to remove unwanted flight tendencies", "Mixing for flaps", "Compensate for roll and pitch during knife-edge", "Setting up your radio for fun-fly models"及"Offsetting a control"...
最後就係講及一啲技術性題目, "Pull/pull systems", "Balance that model", "Model size, wing area and power loading"及"Balancing 2-, 3- & 4-blade props"...

由於訂書之前搵唔到本書嘅細Topics, 只係得啲大路嘅內容, 所以訂書都只係搏一搏...
以上稍為詳細嘅形容希望可以幫到有意想買參考書嘅機友, 方便作出正確嘅選擇...

除以上兩本書, 我亦會睇美國高手John Glezellis嘅文章, 雖然較為簡短, 但已經導出要旨...
最鍾意佢o個句, "Remember that practice makes perfect, but always remember to have fun!"...

玩飛機Aerobatics就係咁, 好多動作都唔需要好覆雜嘅手指動作, 但要做得好就唔係咁易, 要做得好, 唯有多練習...

無寫咁耐,唔係因為我唔記得有呢個blog,只係諗左好耐有d咩可以寫,一路都係離不開砌機,整機....

有陣子曾經醉心專注玩控入面既功能,將所有認識關於玩3d既mixing都試下set,而放上架rushhttp://picasaweb.google.co.uk/aeroipjan/RushF3AD到試飛,

其實都叫飛過晒,但唔係試得出d咩出來,亦好難有系統咁講解,

最近專注用其中一個mixing去練習,spoilerons,先講下spoileron架機會有咩動作,左右副翼會跟隨升降舵同方向動作,升降舵向上動時,左右副翼亦同時向上動,可以有兩種set法,

1.副翼可跟升降舵同步線性地動作

2.一按掣,副翼移至預先設定的角度

spoileron 適用於harrier,elevator,parachute等特技動作

最近練翼正飛harrier,spoileron用airbrake preset 一打掣就左右副翼同時向上,平飛時使用spoileron,架機會頓時急速垂直下降(機身水平),好似比風壓低一樣,就會做到parachute(降落傘)動作,而做harrier,應該先打升舵將機帶少少攻角飛行,之後再打spoileron,架機就唔會突然急速下降,動作會流暢d,如先打spoileron先,有機會機身下降得太快,升降舵都來唔到反應,之後再打一輪亂舵修正先可進入harrier狀態.....睇老外寫,spoileron就有如跑車上的尾定風翼一樣,將機身壓低穩定,如做harrier時,可以減低wing rock現像,我估意思係主翼唔會左加擺得咁勁,但我試過,有用同無用,只係有好少許的分別,不過要試多d唔同機種先可作實,而有人會問preset幾多角度為基準,老外資料就話視乎機種,無特定,但我試過覺得係睇風力,如對風harrier,升降舵同spoileron都可以set細一點.

做harrier有點少秘訣,升降舵要拉盡,用油門去控制攻角高度,如升降舵不打盡,油門同升降不斷修正配合,很難做得好平穩的harrier,建議副翼要用細角,修平機身時,可以無咁辛苦...

下次再講下其他mixing....可能要等好耐