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小毛
我是老鳥
Taiwan
12587 Posts |
 Posted - 10/08/2026 : 09:14:39
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要給錢啊，不給錢給長期計劃啊，要中科院或漢翔生出新玩意不給足夠錢哪生得出來。之前默默做研究，也是有攻克一些發動機的技術，但是公布的不多，外界也很難搞清楚現在的能力到哪裡了，畢竟沒有新案子就看不出來進步到哪裡了。
小型渦輪已經用在無人機和飛彈上，更大型的目前沒有立案產生需求......
漢翔現在算民營企業，要對股東負責，國家不給專案，自己出錢開發能撐多久？
中科院也要受各種監督，沒立案的東西還能偷偷做到技術突破？
就我說，據說現在已經有全數位化的飛機設計軟體環境和模擬，其實改外型改設計難度已經較當年好很多，就是要立個明確的目標和規格，想辦法總是可以做到的，就看要犧牲什麼性能，像是油量或是最高速度啥的，你目標400公尺起飛也不是不可能做到。
有一個不會洩漏國家機密又可以搞外銷的專案，看看漢翔有沒有興趣。稍微拉皮一下誰說不能有現代感....XD
當年競標高教機的一個提案叫做AT3-Max
主要特色與細節設計
• 動力大幅提升：規劃更換兩具 5,000 磅等級的 TFE-731-50 渦輪扇發動機，使總推力從原有的 7,000 磅增加至 10,000 磅，大幅改善爬升與加速性能。
• 機頭與結構修改：將機頭設計得較原版寬大，用以容納現代化部訓機所需的任務電腦及先進航電系統。
• 航電數位化：預計導入全新的數位化座艙與多功能顯示器，取代傳統機械儀表，縮小學官轉換二代戰機（如 F-16、IDF）的技術落差。
• 平戰轉換潛力：延續雙發動機、長滯空時間、低耗油率與短場起降的安全優勢，並保有執行輕度對地攻擊與武器掛載的彈性。
https://www.chinatimes.com/realtimenews/20150812004859-260407?chdtv
** 小毛的新幻想空間逐漸復活中(新增3D圖喔).....**
http://lordmrx.pixnet.net/blog
歡迎參觀 |
Edited by - 小毛 on 10/08/2026 09:35:01 |
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davidboy
路人甲乙丙
4063 Posts |
Posted - 10/08/2026 : 09:40:35
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如果是想拦我们，当然应该追求截击性能，而不是短距起降。
否则起飞就处于低能量状态，被人高打低，打傻逼。
爬升、加速、超音速性能，才是最重要的。
F104起降性能一点都不好，但是是公认的优秀截击机。
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kmleu
路人甲乙丙
2466 Posts |
Posted - 10/08/2026 : 09:48:21
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#同意D大見解，下標題有誤差，要同時兼顧某幾項性能，即使科技進步，還是不容易
#對只講*自製率好高**好省錢*還能兼顧民族自尊心的國造案，個人實在沒興趣繼續夢下去！意者請另開新樓 |
Edited by - kmleu on 10/08/2026 10:24:27 |
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閒遊之人
我是老鳥
7010 Posts |
Posted - 10/08/2026 : 18:17:41
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乾脆掛拋棄式火箭的緊急起飛算了
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kmleu
路人甲乙丙
2466 Posts |
Posted - 10/08/2026 : 18:35:26
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| 模仿一下：駕駛艙後裝個小型舉升風扇抬個五度攻角算了！但還沒想舉升風扇除了抬機頭還能幹嘛？ |
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小毛
我是老鳥
Taiwan
12587 Posts |
Posted - 10/08/2026 : 18:43:32
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問AI...
To modify the Boeing T-7 Red Hawk into a Short Takeoff and Landing (STOL) fighter jet, you would need to execute major structural, aerodynamic, and propulsion overhauls. While Boeing and the USAF have discussed transforming the T-7 trainer into an "F-7" light attack fighter, modifying a clean-sheet trainer to achieve true STOL capabilities requires overcoming significant engineering constraints.
In fact, Boeing recently declined to bid a carrier-capable version for the Navy due to the extreme qualification hurdles involved.
An engineering roadmap to achieve a STOL fighter modification involves the following changes:
1. High-Lift Aerodynamic Enhancements
The standard T-7 is designed for high-speed energy management and fighter lead-in training. For STOL operations, the aircraft must generate maximum lift at incredibly low speeds.
• Leading-Edge Slats and Flaps: Add full-span, variable-camber leading-edge slats and larger trailing-edge Fowler flaps to drastically increase the wing's coefficient of lift during takeoff and approach.
• Wing Expansion or Folding: The current wing area is small. Achieving STOL requires either a wider wingspan to lower wing loading, or adding composite wing-glove extensions.
• Canards: Integrating active forward canards near the cockpit would provide additional pitch authority and lift, allowing the nose to rotate quicker on short runways.
2. Propulsion and Thrust Vectoring
The T-7 is powered by a single General Electric F414-GE-400 engine. STOL performance requires instantaneous power and airflow management.
• Thrust Vectoring Control (TVC): Install a multi-axis thrust-vectoring nozzle. By redirecting engine exhaust up or down, the aircraft can use engine power to augment aerodynamic pitch, enabling extremely steep takeoff and landing angles.
• Upgraded Afterburner & Intake: Calibrate the F414 to deliver a higher thrust-to-weight ratio. The air intakes would need auxiliary blow-in doors to supply the engine with enough air at zero or low forward airspeed.
3. Heavy-Duty Landing Gear & Arresting Systems
STOL landings are harsh; the aircraft must essentially "crash" onto the runway without a long flare, absorbing massive vertical descent rates.
• Ruggedized Trailing-Arm Gear: Replace the standard landing gear with heavy-duty, long-travel trailing-arm struts (similar to carrier-borne aircraft) to absorb high-sink-rate impacts.
• Heavy Braking & Carbon Discs: Install high-capacity carbon brakes and an advanced anti-skid system to halt the aircraft immediately upon touchdown.
• Arresting Hook: Add a structural tailhook to utilize short-field expeditionary arresting wires if tarmac space is severely limited.
4. Transformation into a Combat Fighter
A trainer lacks the survivability and teeth of a fighter jet. The "F-7" conversion requires integrating weapon systems into the airframe.
• Weapons Integration: Modify the wings and centerline fuselage to accept multiple hardpoints/pylons capable of carrying smart bombs, air-to-air missiles, and external fuel tanks.
• Sensor Suite: Install an Active Electronically Scanned Array (AESA) radar into the nose cone and an Infrared Search and Track (IRST) sensor for combat tracking.
• Defensive Countermeasures: Integrate radar warning receivers (RWR), missile approach warning sensors, and internal chaff/flare dispensers.
** 小毛的新幻想空間逐漸復活中(新增3D圖喔).....**
http://lordmrx.pixnet.net/blog
歡迎參觀 |
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dasha
版主
42850 Posts |
Posted - 10/09/2026 : 07:25:32
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高教機當攔截機的歷史及優缺點,小弟在本欄寫過,2年前.
http://www.acewings.com/cobrachen/forum/topic.asp?TOPIC_ID=12192&whichpage=1
本質上即使是最成功的T-38改F-5,F-5還是比較像空戰能力最佳的攻擊機,而不是攻擊能力強大的戰鬥機,低速升力高所以低空纏鬥很強,但要爬升......當年Tu-95途經台海,F-5E可是要開後燃器才能爬到其巡航高度伴飛,那就不要問這玩意的攔截能力,Tu-95不算是飛很高的飛機吧?
又,T-38改F-5能當戰鬥機其實還有個理由,這案子最早是美國海軍希望Essex級甚至護航航艦能有超音速戰鬥機用的研究案,與F8U及F11F是同批,這案子失敗才轉向搶美國空軍教練機案,但F8U及F11F最多只能用在Essex級......
STOL除了要注意跑道長度定義,還要注意起降距離定義,SAAB-35/37/39與其他飛機的最大不同,在於其他飛機的最短起降不一定含武器,燃油搞不好給你只裝30%,但瑞典的要求是"標準作戰武裝",J-35/JA-37/JAS-39還客氣是給你算AAM以及接近內載滿油,AJ-37是掛反艦飛彈上......所以SAAB-37表演過與其他國家作弊時一樣得乾乾淨淨起降,兩百多公尺,直接輾壓F-14而等同於STOL模式F-35B......
而瑞典辦到的方式是"不顧一切就是要搞前升力面",在比較低的速度就讓升力中心大幅前移,尾部配平面都往下打,產生最大升力,配合的飛控也是其他國家沒有的. |
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以T-7A 為基礎開發短場起降戰機可行性
