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هدایت سماوی

به نام خدا

هدایت سماوی

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نوعی از هدایت داخلی خود اتکاست که موشک،مسیر و موقعیت خود را با استفاده از ستارگانی که موقعیت ثابت در  فضا دارند، تصحیح میکند. از این موقعیت به عنوان دستگاه مرجع مختصات استفاده میشود.تلسکوپ حسگر نور اولین بخش این نوع هدایت است.
در این سامانه تا زمانی که محور دوربین در امتداد ستاره فرضی است،روشنایی وارده به تلسکوپ ثابت است؛ ولی در صورت کج شدن موشک و در نهایت انحراف محور آن،باعث میشود که دوربین از ستارۀ مورد نظر نور کمتری دریافت نماید و کمبود نور،سلول فتوالکتریک متصل به دوربین را تحریک نموده و این عمل،موتور متصل به تلسکوپ را به حرکت در می آورد تا موشک بتواند محور خود را با محور دوربین منطبق سازد.به عبارت دیگر تصحیح انحراف با استفاده از جایروسکوپ بر مبنای ستارۀ مورد نظر،محور دوربین و محاسبات رایانۀ هدایت انجام میشود.در این مدت کوتاه پرواز،باید ستارگان زیادی در اعماق جو در دسترس باشند.

هدایت سماوی


امیررضا علی اکبری
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