India fails to launch first small satellite ‘SSLV’ rocket with aim of high frequency and low cost | Sorae’s gateway to space

The Indian Space Research Organization (ISRO) announced on August 7 that the new missile “SSLV （Small Satellite Launch Vehicle）“It was launched for the first time. Although the rocket flew halfway as planned, the combustion ended earlier than planned in the final stage, so the satellite could not be put into the desired orbit.

The SSLV developed by ISRO was launched in South India on August 7, 2022 at 12:48 JST.Satish Dhawan Space CenterLaunched after the first stage separated about two minutes after launch, the second and third stages separated as planned. However, about 10 minutes after launch, the kick stage was ignited.VTM السرعة Speed ​​TrimmerThe engine immediately stopped burning.

A few hours later, ISRO released a statement that the onboard satellite was placed in an elliptical orbit at an altitude of 76 x 356 km instead of the planned circular orbit at an altitude of 356 km. It is believed that the cause was a defect that occurred in the VTM, and that the satellite was lost after re-entering the atmosphere. S. Somanath, Head of ISRO, said:Until the third stage of the rocket, it worked as planned.And in the final stage,lost data‘ He said.

SSLV isFrequent, low-cost launch of small satellites and microsatellitesIt is a 34-meter solid-fuel three-stage rocket (using hydroxyl-terminated polybutadiene as fuel) developed with the aim of achieving this goal. In order to put the satellite into orbit as planned, the VTM kick stage was equipped with a liquid-propellant rocket engine (using monomethyl hydrazine and nitrogen tetraoxide, to which nitrogen monoxide was added).

[▲صاروخSSLVقيدالإنشاءيحدثالتجمعالعمودي(Credit:ISRO)】

وفقًا لوسائل تطوير الفضاء الخارجية SpaceNews ، بدأ تطوير SSLV في عام 2017 ، وكانت الخطة الأولية هي إطلاقها في عام 2019. ومع ذلك ، تأخر الجدول الزمني بسبب فشل اختبار الاحتراق الذي أجري في عام 2021 وركود صناعة الفضاء بسبب وباء عدوى فيروس كورونا الجديد.

بالإضافة إلى ذلك ، أطلق SSLV هذه المرة قمرًا صناعيًا لرصد الأرض “EOS-02“و CubeSats”AzzadiSAT“تم تثبيته. EOS-02 هو قمر صناعي تجريبي للاستشعار البصري عن بعد بوزن 135 كجم تم تطويره بواسطة ISRO. AzzadiSAT هو عبارة عن جهاز CubeSat سعة 8 كجم (حجم 8U) تم تطويره بواسطة طالب هندي ، وقد تم تجهيزه بما مجموعه 75 حمولة (وزن كل منها حوالي 50 جرامًا) ، بما في ذلك جهاز إرسال واستقبال UHF-VHF ، وكاشف إشعاع ، وكاميرا سيلفي. يعني.

[▲ ساتل رصد الأرض “ EOS-02 ” (في الوسط) والساتل الدقيق “ AzaadiSAT ” (يسار) على متن SSLV (Credit: ISRO)]

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• Image credit: ISRO
• ISRO – SSLV-D1 / EOS-02 . mission
• ISRO – Mission Manual SSLV-D1 / EOS-02
• space news India’s new SSLV missile fails to launch for the first time

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