ISRO achieves milestone with successful sea-level test of CE20 cryogenic engine: What is it all about? | Mint<img src='https://sb.scorecardresearch.com/p?c1=2&c2=6035286&cv=4.4.0&cj=1'>SubscribeSign inView Market DashboardHomeLatest NewsMarketsMarket NewsMark to MarketCommoditiesLive BlogsCryptocurrencyIPOStock MarketsMarket DataStock PagesIndex pagesBullionGold SilverFuelPetrolDieselNewsIndiaWorldWSJEconomistNewsUS NewsPremium e-paperGlobal Partners WSJEconomistMint SpecialsMint ExplainersMark to MarketLong StoryMint PrimerSnapviewSectionsCompaniesTechnologyMarketsMoneyMutual FundsInsuranceAutoIndustryPersonal FinanceCompaniesStart-upsCompany ResultsPeopleMoneyPersonal FinanceInsurance Ask Mint MoneyMutual FundsMyMintMint HindiPersonal LoanTechnologyGadgetsTech ReviewsApp News5G TechFoldable SmartphonesIn ChartsMoreElection Results 2024OpinionAuto NewsSportsIPL 2025IPL 2025 Purple CapIPL 2025 Orange CapIPL 2025 Points TableEducationTools IFSC Code FinderIncome Tax CalculatorMint LoungeMintGenie Multi-MediaVideosWebStories Photo GalleryPodcastsExplore MintAbout usPrint subscriptionMint AuthorsPrivacy PolicyTerms of UseDisclaimerMint codeCookie PolicyCode of ethicsSubscriber terms of useSitemapContact UsHindustan TimesLive Hindustan Hello UserSign inSign OutMy AccountSubscribeMy WatchlistNewslettersNotificationsMy ReadsFor YouView Less -View More +Data InsightsMarket DashboardBullionGoldSilverFuelPetrolDieselCommoditiesGoldGoldMAluminumMenthaoilSilverSilverMICGoldPetalNatural GasCopperZincSilverMCrudeOilGoldGinueaLeadCryptoCurrenciesView Less -View More +Top SectionsToday's NewsIndia NewsWorld NewsUS News TodayEconomyMoney NewsPersonal FinanceQ&AOpinionCompany Business NewsIPO NewsStart-upsCompany ResultsTop Company LeaderStock Market NewsStock MarketsCommodity NewsMark To MarketIPO NewsLive Blogpersonal loanpersonal loan emi calculatorPersonal Loan Interest RatePersonal Loan EligibilityBusiness LoanInstant LoanElection Results 2024Assembly Elections 2024Indian Industry AnalysisBanking NewsInfotech NewsInfrastructureAgricultureManufacturingEnergy NewsRetail NewsAuto NewsSports NewsOpinionViewsColumnsTechnology NewsGadgetsTech ReviewsApp NewsPolitics NewsLoungeBusiness of LifeSports NewsIPL 2025 IPL Points Table 2025IPL 2025 Orange CapIPL 2025 Purple CapIPL Match Today | IPL 2024 Schedule Education News TodayView Less -View More +Premium Offeringse-paperWSJEconomistMyMintMint PremiumView Less -View More +Tools and CalculatorsIFSC Code FinderIncome Tax CalculatorSIP CalculatorEMI CalculatorHome Loan EMI CalculatorCar Loan EMINPS CalculatorView Less -View More +MultiMedia CollectionsVideosWebStoriesPhoto GalleryPodcastsView Less -View More +More From MintMint GenieMint LoungeView Less -Explore MintAbout UsPrint SubscriptionMint AuthorsTerms of UseDisclaimerMint CodeCode of ethicsCookie PolicyPrivacy PolicySubscriber - Terms of UseSITEMAPContact UsMint AppsView Less -View More +Copyright © HT Digital Streams Limited All Rights Reserved.ISRO achieves milestone with successful sea-level test of CE20 cryogenic engine: What is it all about?ISRO achieved a breakthrough with the CE20 cryogenic engine passing a critical sea-level test, essential for future missions like Gaganyaan. The upgraded engine can produce a thrust of up to 22 tonnes, enhancing the payload capacity of the LVM3 launch vehicle. LivemintPublished12 Dec 2024, 06:12 PM ISTThe Indian Space Research Organisation (ISRO) announced on Thursday a significant breakthrough in its propulsion technology as the CE20 cryogenic engine passed a critical sea-level test, marking a vital step forward for its future space missions.(X: ISRO)The Indian Space Research Organisation (ISRO) announced on Thursday a significant breakthrough in its propulsion technology as the CE20 cryogenic engine passed a critical sea-level test, marking a vital step forward for its future space missions.</p><p>The test, conducted on 29 November at the ISRO Propulsion Complex in Mahendragiri, Tamil Nadu, demonstrated the engine's restart capability, which is crucial for advanced missions such as Gaganyaan, ISRO’s first manned spaceflight. The engine, which powers the upper stage of the Launch Vehicle Mark-3 (LVM-3), achieved a major milestone with the introduction of a nozzle area ratio of 100.</p><p>“The CE20 cryogenic engine, developed indigenously by the Liquid Propulsion Systems Centre, has been qualified to operate at a thrust level of 19 tonnes and has successfully powered six LVM3 missions to date,” ISRO stated.The engine has recently been upgraded for the Gaganyaan mission to produce a thrust level of 20 tonnes. Additionally, it has been configured for an enhanced thrust of 22 tonnes for the future C32 stage, improving the payload capability of the LVM3 launch vehicle.A standout feature of this test was the evaluation of a multi-element igniter, integral to enabling engine restart capability. Restarting a cryogenic engine poses unique challenges, particularly in terms of vacuum ignition without nozzle closure. ISRO confirmed that previous ground tests had already demonstrated vacuum ignition successfully.The sea-level test introduced an innovative ‘Nozzle Protection System’ to address challenges such as flow separation inside the nozzle, which could otherwise lead to severe vibrations, thermal issues, and potential damage. This system has enabled a cost-effective and less complex testing procedure compared to the High-Altitude Test (HAT) facility traditionally used for such evaluations.ISRO explained that the CE20 engine’s high nozzle area ratio results in an exit pressure of approximately 50 millibars, posing significant challenges for sea-level testing. However, the new system has effectively mitigated these complexities, paving the way for more efficient acceptance testing.(With inputs from PTI)Catch all the Business News, Market News, Breaking News Events and Latest News Updates on Live Mint. 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