高亞速馬赫數 的英文怎麼說
中文拼音 [gāoyǎsùmǎhèshǔ]
高亞速馬赫數
英文
high-subsonic mach number- 高 : Ⅰ形容詞1 (從下向上距離大; 離地面遠) tall; high 2 (在一般標準或平均程度之上; 等級在上的) above...
- 速 : Ⅰ形容詞(迅速; 快) fast; rapid; quick; speedy Ⅱ名詞1 (速度) speed; velocity 2 (姓氏) a surna...
- 馬 : Ⅰ名詞1 [動物學] (哺乳動物) horse 2 (象棋棋子) horse one of the pieces in chinese chess3 (姓...
- 赫 : Ⅰ形1 (顯著; 盛大) conspicuous; grand 2 (紅如火燒) bright flaming redⅡ名詞1 [電學] (頻率單位...
- 數 : 數副詞(屢次) frequently; repeatedly
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In the range of flight mach number mo = 3 ~ 7, in order to take the advantage of ramjet and scramjet, a fix - shaped dual - mode scramjet, in which both subsonic and supersonic combustion can be obtained, is used for hypersonic vehicle
在飛行馬赫數m _ = 3 - 7的范圍內,為充分發揮沖壓發動機的性能優勢,高超聲速飛行器採用了既能在亞聲速燃燒模態,又能在超聲速燃燒模態下工作的固定幾何形狀的雙模態沖壓發動機。The main results are : supersonic region and subsonic region can co - exist in flow path simultaneously, subsonic flow is insignificance for engine performance ; total pressure of primary rocket should be decreased when mach number is increased. in the experimental aspect, some components of ejectorjet experimental system were improved, ejectorjet experiments using alcohol as secondary fuel were conducted
由數值計算獲得的結論為:引射火箭內的一般流態為超音速區與亞音速區共存,亞音速區不具備做功能力;飛行馬赫數增大,引射火箭內更易於產生壅塞;為了獲得最佳的性能,隨著飛行馬赫數的提高,應當降低一次火箭的工作壓強。
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