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- The leak of Liquid Rocket Engine (LRE) is very common and dangerous. 液體火箭發(fā)動(dòng)機的泄漏是常見(jiàn)和極其危險的故障。
- Because the combustion mode between oxidizer and solid fuel is in particular, HRM is different from SRM and LRE. 由于氧化劑和固體燃料的組織燃燒方式不同，使得固液火箭發(fā)動(dòng)機工作過(guò)程與固體、液體火箭發(fā)動(dòng)機有很大的區別。
- The integrity test of Liquid Rocket Engine (LRE) must be carried out before its launch. 在液體火箭發(fā)動(dòng)機發(fā)射前，必須進(jìn)行完整性試驗。
- The study may be helpful for fault diagnostics of the start up of liquid rocket engine (LRE). 為液體火箭發(fā)動(dòng)機啟動(dòng)過(guò)程的故障診斷提供參考依據。
- The thrust chamber of the LRE works under the condition characterized by high pressure and high temperature. 液體火箭發(fā)動(dòng)機推進(jìn)室里的工質(zhì)工作在高溫高壓環(huán)境下，可靠的冷卻是保證其安全工作的關(guān)鍵技術(shù)之一。
- Based on system analysis of LRE, OOP technique and powerful finite elements analysis software ANSYS, a CAD system has been set up. 較系統地分析了再生冷卻式液體火箭發(fā)動(dòng)機推力室設計CAD系統的組成和框架,以面向對象技術(shù)和集成的大型有限元軟件ANSYS二次開(kāi)發(fā)技術(shù)為基礎建立系統。
- The analysis of LRE historical test data showed that the algorithm has a high training efficiency and can detect the faults of the LRE turbopump. 對火箭發(fā)動(dòng)機渦輪泵試車(chē)數據分析的應用結果表明，該算法具有很高的訓練效率，檢測結果良好。
- Reliable cooling is one of the most key technologies to insure the LRE working safely and protect the chamber wall from burn up. 液膜冷卻作為一種重要的輔助冷卻方式，由于其良好的冷卻效果和相對簡(jiǎn)單的通道結構，在液體火箭發(fā)動(dòng)機的推進(jìn)室中得到了廣泛應用。
- Firstly,besides the correlation of different knowledge,the concept and the types of LRE diagnosis knowledge are systematically described. 主要研究?jì)热莅ǎ合到y闡述了發(fā)動(dòng)機診斷知識的概念、類(lèi)別和相互關(guān)系；
- It is an important and basic issue to choose monitoring parameters of Liquid propellant Rocket Engine (LRE) monitoring system in ground test. 摘要確定監測參數是液體火箭發(fā)動(dòng)機地面試驗監控系統的一個(gè)重要而基礎的問(wèn)題。
- For all of these reasons, it imminently asks for developing a kind of advanced professional design tool with high integration in order to improve the design level of LRE. 因此,現實(shí)迫切需要研究和開(kāi)發(fā)一個(gè)專(zhuān)業(yè)的、集成度高的設計平臺,豐富液體火箭發(fā)動(dòng)機的設計手段,提高設計水平。
- By analyzing the working characteristics of the liquid rocket engine, strategies of applying data mining from the point of view of the data warehouse for FDD of LRE are proposed. 分析表明,聚類(lèi)、類(lèi)、聯(lián)、間序列分析和孤立點(diǎn)檢測等數據挖掘方法適用于液體火箭發(fā)動(dòng)機的故障檢測和診斷。
- Primary research results show that such data mining methods as clustering, classification, association, time-series analysis and outlier analysis are feasible in the FDD of LRE. 分析表明,聚類(lèi)、類(lèi)、聯(lián)、間序列分析和孤立點(diǎn)檢測等數據挖掘方法適用于液體火箭發(fā)動(dòng)機的故障檢測和診斷。
- A physical model of the automatic control system of a pump-fed Liquid Rocket Engine (LRE) is constructed, for which a nonlinear mathematical model is built. 摘要以能多次啟動(dòng)的某泵壓式液體火箭發(fā)動(dòng)機的自動(dòng)控制系統為研究對象，構造了液體火箭發(fā)動(dòng)機自動(dòng)控制系統的物理模型，并對其建立了非線(xiàn)性的數學(xué)模型。
- I t h as A lre a dy b e en. 留 卜 住，就 任 它 去 吧。曾 經(jīng) 那 么 的 愛(ài)， 如 今 還 不 是 分...
- An adaptive threshold algorithm consisting of two stages based on autoregressive model was presented for monitoring the steady process of Liquid Propellant Rocket Engine(LRE) in ground test. 提出一種基于自回歸模型的自適應閾值檢測算法用于監測液體火箭發(fā)動(dòng)機地面試驗的穩態(tài)過(guò)程,該算法由兩個(gè)階段組成。
- The manifestations of parameters are extracted from the simulated fault data for 16 common fault modes,these manifestations are used to establish the set cover model of multi faults diagnosis for liquid rocket engine(LRE) system. 通過(guò)從故障仿真數據中提取常見(jiàn)故障的效應參數癥狀 ,建立發(fā)動(dòng)機的集合覆蓋多故障診斷模型。
- This paper summarizes the leak detection techniques of LRE,which are classified into groups and considered in details.Finally,several prospects of the leak? detection techniques are presented. 本文對液體火箭發(fā)動(dòng)機的泄漏故障檢測方法進(jìn)行了綜述，對已用于或可能用于液體火箭發(fā)動(dòng)機檢漏的技術(shù)進(jìn)行分類(lèi)和詳細評述，指出了液體火箭發(fā)動(dòng)機檢漏技術(shù)的幾個(gè)發(fā)展方向。
- To deal with the lack of fault samples in the fault detection of a Liquid Rocket Engine (LRE) turbopump, a detection model based on one-class support vector machines (OC-SVMs) was founded. 摘要針對在火箭發(fā)動(dòng)機渦輪泵的故障檢測過(guò)程中缺乏故障樣本的問(wèn)題，應用單類(lèi)支持向量機，為高速渦輪泵試車(chē)數據分析建立了一種新異類(lèi)檢測超球模型。
- And a multi-layer high speed training strategy was proposed for the improvement of training efficiency.The analysis of LRE historical test data showed that the algorithm has a hig... 對火箭發(fā)動(dòng)機渦輪泵試車(chē)數據分析的應用結果表明,該算法具有很高的訓練效率,檢測結果良好。
