Live Saturday, 14 November 2026
BREAKING
Egyptian FM holds calls with Iranian counterpart , U.S. Envoy on regional developmentsZverev into French Open last-fourIsraeli fire kills four people in Gaza, medics sayEgypt, Singapore discuss expanding cooperation in tourism, antiquitiesAncelotti eases Neymar W. Cup fearsArab, Islamic states condemn Israeli actions at Al-AqsaSyria Hopes for Terrorism Delisting to Spur Economic RecoveryBenfica linked with Fulham’s SilvaVan der Breggen takes Giro leadKremlin: Saudi Arabia Named Guest of Honor at St. Petersburg Economic ForumTrump administration proposes 25% tariff to punish Brazil over trade practicesرياضة محلية‘Really cool to share this journey with her’: Michelle Wie West playing for her family at U.S. Women’s OpenArchaeological Replicas Showcase Saudi Arabia’s Rich History at Kuala Lumpur Int’l Book FairRenewable Energy Helps Red Sea Global Avoid 118,000 Tons of Carbon EmissionsLetter: Carol Rumens obituaryEngland v India: third and deciding women’s T20 cricket international – liveHealthVolunteers serve comfort food in a worrying Ebola outbreak – Sault Michigan NewsEconomyTrump signs AI executive order asking companies to give government early access to modelsLocalSouth West Water fined nearly £2million after supplying homes with parasite-ridden water that left four people in hospital – and telling people it was safe to drinkScience & TechYour car is following you – how to reclaim your data privacy on the open roadEgyptian FM holds calls with Iranian counterpart , U.S. Envoy on regional developmentsZverev into French Open last-fourIsraeli fire kills four people in Gaza, medics sayEgypt, Singapore discuss expanding cooperation in tourism, antiquitiesAncelotti eases Neymar W. Cup fearsArab, Islamic states condemn Israeli actions at Al-AqsaSyria Hopes for Terrorism Delisting to Spur Economic RecoveryBenfica linked with Fulham’s SilvaVan der Breggen takes Giro leadKremlin: Saudi Arabia Named Guest of Honor at St. Petersburg Economic ForumTrump administration proposes 25% tariff to punish Brazil over trade practicesرياضة محلية‘Really cool to share this journey with her’: Michelle Wie West playing for her family at U.S. Women’s OpenArchaeological Replicas Showcase Saudi Arabia’s Rich History at Kuala Lumpur Int’l Book FairRenewable Energy Helps Red Sea Global Avoid 118,000 Tons of Carbon EmissionsLetter: Carol Rumens obituaryEngland v India: third and deciding women’s T20 cricket international – liveHealthVolunteers serve comfort food in a worrying Ebola outbreak – Sault Michigan NewsEconomyTrump signs AI executive order asking companies to give government early access to modelsLocalSouth West Water fined nearly £2million after supplying homes with parasite-ridden water that left four people in hospital – and telling people it was safe to drinkScience & TechYour car is following you – how to reclaim your data privacy on the open road
Prices
US dollar53.44EGPEuro58.98EGPBritish pound70.64EGPSaudi riyal14.25EGPUAE dirham14.55EGPKuwaiti dinar171.66EGPJordanian dinar75.37EGPQatari riyal14.68EGPTurkish lira1.06EGPChinese yuan7.99EGPGold 246,679.06EGP/gGold 215,844.17EGP/gGold 185,009.29EGP/gSilver83.58EGP/g
US dollar53.44EGPEuro58.98EGPBritish pound70.64EGPSaudi riyal14.25EGPUAE dirham14.55EGPKuwaiti dinar171.66EGPJordanian dinar75.37EGPQatari riyal14.68EGPTurkish lira1.06EGPChinese yuan7.99EGPGold 246,679.06EGP/gGold 215,844.17EGP/gGold 185,009.29EGP/gSilver83.58EGP/g
NEWS BREAKING
Read story
Science & Tech

“ركن التابوت”.. خطر خفي قد يُسقط الطائرات من السماء

Back

ما يعرفه ريفو عن الخبر

  • تُعرف ظاهرة ركن التابوت بأنها حالة جوية حرجة تتقلص فيها المسافة بين الحد الأدنى والحد الأقصى لسرعة الطائرة.
  • يؤدي ضيق هامش المناورة في هذه المنطقة إلى فقدان الرفع الهوائي وتعرض الطائرة لخطر السقوط المفاجئ.
  • تزداد مخاطر هذه الظاهرة عند صعود الطائرات الثقيلة المحملة بالوقود أو عند مواجهة العواصف الرعدية والتيارات الهوائية.
  • يرتبط اسم هذه الظاهرة بحادث تحطم طائرة في فلوريدا مطلع نوفمبر الجاري كاحتمال غير مؤكد حتى الآن.

تُعد ظاهرة "ركن التابوت" من أخطر التحديات التي قد تواجه الطائرات على الارتفاعات الشاهقة، إذ يتقلص هامش السرعة الآمنة إلى مستويات ضيقة للغاية، مما قد يؤدي إلى فقدان الرفع الهوائي وسقوط الطائرة.

المصدر: الجزيرة – اقتصاد

0 Views

أضف تعليقاً

Your email address will not be published. Required fields are marked *