哈尔滨工程大学学报
哈爾濱工程大學學報
합이빈공정대학학보
JOURNAL OF HARBIN ENGINEERING UNIVERSITY
2014年
4期
445-456
,共12页
夏桂华%董然%孟雪%朱齐丹
夏桂華%董然%孟雪%硃齊丹
하계화%동연%맹설%주제단
舰载机%6自由度运动方程%基准状态配平%扰动线性化%舰尾气流场%动力学模型
艦載機%6自由度運動方程%基準狀態配平%擾動線性化%艦尾氣流場%動力學模型
함재궤%6자유도운동방정%기준상태배평%우동선성화%함미기류장%동역학모형
carrier-based aircraft%6-DOF motion equations%trim at reference state%perturbed linearization%ship burble%kinetic model
为了实现舰载机精确着舰时的飞行控制系统设计,应具备完善的舰载机动力学模型。针对已公开的线性扰动模型较为单一且多数不完整的情况,根据舰载机的性能参数和标准小扰动理论,完成了对其着舰阶段的非线性动力学建模,基准状态配平以及纵向运动的线性化,得到能描述舰载机在平静大气和舰尾气流场下着舰的线性模型。根据舰载机的本体特性综合设置数值仿真条件,验证表明线性模型的精度较高。分析了将气流扰动加入线性模型的方法,通过理论分析和仿真比较得出,舰尾流的水平速度分量对线性模型的精度有很大影响,在扰动线性化的过程中不能忽视。
為瞭實現艦載機精確著艦時的飛行控製繫統設計,應具備完善的艦載機動力學模型。針對已公開的線性擾動模型較為單一且多數不完整的情況,根據艦載機的性能參數和標準小擾動理論,完成瞭對其著艦階段的非線性動力學建模,基準狀態配平以及縱嚮運動的線性化,得到能描述艦載機在平靜大氣和艦尾氣流場下著艦的線性模型。根據艦載機的本體特性綜閤設置數值倣真條件,驗證錶明線性模型的精度較高。分析瞭將氣流擾動加入線性模型的方法,通過理論分析和倣真比較得齣,艦尾流的水平速度分量對線性模型的精度有很大影響,在擾動線性化的過程中不能忽視。
위료실현함재궤정학착함시적비행공제계통설계,응구비완선적함재궤동역학모형。침대이공개적선성우동모형교위단일차다수불완정적정황,근거함재궤적성능삼수화표준소우동이론,완성료대기착함계단적비선성동역학건모,기준상태배평이급종향운동적선성화,득도능묘술함재궤재평정대기화함미기류장하착함적선성모형。근거함재궤적본체특성종합설치수치방진조건,험증표명선성모형적정도교고。분석료장기류우동가입선성모형적방법,통과이론분석화방진비교득출,함미류적수평속도분량대선성모형적정도유흔대영향,재우동선성화적과정중불능홀시。
A perfect dynamic model of a carrier-based aircraft contributes significantly to perfect implementation of its carrier landing control system. However, the available linear perturbation models of a carrier-based aircraft are single and mostly incomplete. In this context, based on the performance parameters of a carrier-based aircraft and the standard small-perturbation theory, the nonlinear dynamic modeling for the landing stage, the trimming under the reference state and linearization of the longitudinal motion were completed, and a linear model for describing the landing of the carrier-based aircraft in a calm atmosphere and ship burble was attained. According to the natural properties of the carrier-based aircraft, the numerical simulation conditions were comprehensively set and the dem-onstration results showed that the precision of the model was high. An approach to introduce influences caused by ship burble into the perturbed linearized model was discussed and it showed through theoretical analysis and simula-tion comparison that the horizontal component of burble velocity greatly affected the precision of a linear model, and in the linearization of perturbation, it shall not be neglected.