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1、第43卷第6期航空計(jì)算技術(shù)Vol.43No.62013年11月AeronauticalComputingTechniqueNov.2013飛艇續(xù)航時(shí)間論證方法研究姜琬(中國(guó)特種飛行器研究所戰(zhàn)略技術(shù)研究室,湖北荊門(mén)448035)摘要:由于飛艇續(xù)航時(shí)間受飛行速度、重力浮力配平方式、載油量變化、風(fēng)場(chǎng)條件等多種因素的影響,飛機(jī)續(xù)航時(shí)間計(jì)算方法并不適用于飛艇,因此提出了一種新的基于試驗(yàn)設(shè)計(jì)和統(tǒng)計(jì)分析方法的飛艇續(xù)航時(shí)間論證方法。分析了工作高度的風(fēng)場(chǎng)速度分布規(guī)律,分別給出完全靠發(fā)動(dòng)機(jī)推力矢量平衡和完全靠動(dòng)升力平衡兩種不同情況下飛艇續(xù)航時(shí)間計(jì)算方法,以某大型對(duì)流層飛艇為研究對(duì)
2、象,計(jì)算了初始方案在不同平均巡航速度、配平重量和配平方式下的平均燃油消耗率和最大續(xù)航時(shí)間,對(duì)經(jīng)過(guò)減阻、減重、減少耗油率等技術(shù)改進(jìn)后優(yōu)化方案能達(dá)到的續(xù)航時(shí)間和概率進(jìn)行了分析和論證。研究表明,某飛艇初始方案在使用區(qū)域風(fēng)場(chǎng)條件下基本能滿足留空時(shí)間72h的指標(biāo)要求,經(jīng)技術(shù)改進(jìn)后,指標(biāo)仍有較大的提升的空間。方法考慮了飛艇續(xù)航時(shí)間的多種影響因素、取值變化和交互影響,比較適宜在飛艇這類涉及重浮力配平和任務(wù)耗油率變化的浮空器上使用。關(guān)鍵詞:飛艇;續(xù)航時(shí)間;試驗(yàn)設(shè)計(jì);統(tǒng)計(jì)分析中圖分類號(hào):V274;O21文獻(xiàn)標(biāo)識(shí)碼:A文章編號(hào):1671桘654X(2013)06桘0022桘04S
3、tudyofAirborneEnduranceAnalyzingMethodofTetheredAerostatJIANGWan(ChinaSpecialVehicleResearchInstitute,AVIC,Jingmen448035,China)Abstract:Thecruisedurationcalculatingmethodofaircraftisnotsuitableforairshipbecauseairship′senduranceinflightisinfluencedbymanyfactors,suchasvelocity,balanc
4、eofweightandbuoyancy,changeoffuelloadandwindcondition,andthereforeanewenduranceanalyzingmethodaccordingtoair-shiponthebasisofexperimentdesignandstatisticanalysismeansispresented.Firstly,thewindvelocitydistributingregulationatworkingaltitudeisanalyzed.Thentwokindsofairshipenduranceca
5、lculatingmethodsunderdifferentconditionsaregivenrespectively,includingpowerplantthrustvectorcounterbal-anceandaerodynamicliftcounterbalance.Afterthat,takingalargetroposphereairshipasstudyobject,theaveragefuelconsumptionandmaximumenduranceofitsprimaryschemeatdifferentaveragecruisevel
6、ocity,trimweightandmeansarecalculated.Atlast,theendurancecapacityandprobabilityoftheopti-mizedschemeaftertechniqueimprovementwithdrag,weightandfuelconsumptiondecreasingareana-lyzedanddemonstrated.Thestudyindicatedthattheprimaryschemeoftheairshipcanbasicallymeettherequirementof72hair
7、borneenduranceindexwiththegivenwindconditionintheapplicationregion,andtheindexcanbefurtherprolongedaftertechniqueimprovement.Themethodtakesintoaccountmultifari-ousinfluencingfactorsofairshipendurance,changeofpartialfactorvaluesandinteractionbetweenfac-tors,andispropitioustobeusedint
8、hecounterpartlikeai