空氣加速噴射 的英文怎麼說
中文拼音 [kōngqìjiāsùpēnshè]
空氣加速噴射
英文
air-accelerated spray- 空 : 空Ⅰ形容詞(不包含什麼; 裏面沒有東西或沒有內容; 不切實際的) empty; hollow; void Ⅱ名詞1 (天空) s...
- 氣 : Ⅰ名詞1 (氣體) gas 2 (空氣) air 3 (氣息) breath 4 (自然界冷熱陰晴等現象) weather 5 (氣味...
- 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...
- 噴 : 噴動詞1. (液體等受壓力而射出) spurt; spout; gush; jet 2. (噴灑) spray; sprinkle
- 射 : Ⅰ動詞1 (用推力或彈力送出) shoot; fire 2 (液體受到壓力迅速擠出) discharge in a jet 3 (放出) ...
- 空氣 : 1 (大氣) air; atmosphere 2 (氣氛) atmosphere 3 (氣閘) air brake4 pneum ; pneumo ; pneumat ;...
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While the speed is very large, the fuel - air mixing behind the airstream is decreased and the span that the fuel flow in the second combustor is reduced, so the combustion efficiency is decreased, h ) if the fuel streams impinge with the airstreams directly at the air - inlet exit, it make against increasing the combustion efficiency, i ) increasing air - to - fuel ratio within proper range can increase the combustion efficiency
增加燃氣噴射速度有利於增強迴流區強度,頭部燃燒溫度上升,但速度太大則會減弱燃氣同空氣在進氣道下游的摻混燃燒,減少燃氣在室內停留時間,燃燒效率降低; 8燃氣射流與空氣流在進氣道出口直接撞擊不利於燃燒效率的提高; 9在適當范圍內增大空燃比能顯著提高燃燒效率。It is shown that when the exit area of secondary nozzle and the fuel / oxidizer ratio is fixed, the increase of mass flow rate of secondary flow lead to the decrease of velocity of mixed flow, and increase of total mass flow rate. the synthetical result of these two phenomenon cause the increase of thrust of rocket ejector, but the increasing magnitude is relatively small, indicating that these is no necessary to claim large bypass ratio in rocket ejector design. in the comparison between two configurations, the typical one has better performance, indicating the importance of pressure ratio
結果表明:在固定二次噴管出口面積和氧燃比的條件下,二次流(引射空氣流)流量的增加引起混合氣體出口速度的下降和總流量的增加,二者綜合作用使發動機推力增加,但增幅不大,表明在設計發動機結構和工作參數時,不必過分追求大的引射系數;兩種結構的性能對比分析表明了增壓比對引射火箭性能的提高具有重要意義;對引射火箭的熱力循環分析同樣表明,增壓比對于提高發動機性能非常關鍵。The experimental results show that methanol can replace 35. 1 % diesel by injecting methanol into intake manifold to form even mixture of methanol and air so as to be fired by diesel in cylinders, and the acceleration capability of the car increases obviously and fuel economical performance also improves
試驗結果表明,利用進氣管噴射甲醇與空氣形成均勻的預混合氣,在氣缸內由柴油引燃的方法,能使甲醇對柴油的替代率達到35 . 1 % ,經濟性有所改善,而汽車的加速性能有較顯著地提高。
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