How do Aircraft Altimeters Work - For Student Pilots

How does the altimeter work? As part of my Video Series on Aircraft Systems and the Pitot-Static System, I explain how the Altimeter works. The altimeter uses the static air source and an aneroid wafer filled with gas at sea level pressure to detect changes in static temperature and project them on the face of the altimeter. As an aircraft climbs, the static pressure decreases and causes the aneroid wafer to expand. The expanding wafer spins a gear system inside the altimeter changing the dials on the face of the instrument. As an aircraft descends, the static pressure increases and causes the aneroid wafer to contract. The contracting wafer spins the gears and changes the dials on the face of the altimeter. The pressure gradient in our atmosphere allows the altimeter to work in this manner. For every 1000 feet of altitude gain the pressure drops by one inch of mercury. This system alone, however, does not account for a non-standard temperature. This system is only accurate in standard temperature conditions. So what happens when a cold mass of air comes into the air you are flying and the temperature drops dramatically? Well, the altitude showing on your altimeter would rise because the altimeter thinks that you are gaining altitude. Why does the altitude rise when the temperature drops? This is because when the temperature drops, so does the pressure but the altimeter only relates a drop in pressure to an altitude gain. Therefore, changing the altimeter setting constantly to the most up-to-date altimeter setting corresponding to the current temperature conditions will keep the altimeter calibrated and the reading accurate. ◽️◽️◽️◽️◽️◽️ 🛩️ To get ALL our Video Lessons plus Written Lessons, Quizzes, Audio Lessons, eBooks, Test Prep books, Flash Cards, Practice Tests & Live Lessons with myself you can join our Online Ground School here: https://parttimepilot.com/private-pil... 🛩️ Checkride Prep: https://parttimepilot.com/private-pil... 🚀 FREE COURSE & Facebook Group: We are trying to tackle the problem of flight training expenses head on. We do this by educating students on how to save money, how to plan financially, where to get the best training, scholarships, and more to come. You can join our Facebook group "𝐅𝐢𝐧𝐝 𝐖𝐚𝐲𝐬 𝐭𝐨 𝐏𝐚𝐲 𝐟𝐨𝐫 𝐅𝐥𝐢𝐠𝐡𝐭 𝐓𝐫𝐚𝐢𝐧𝐢𝐧𝐠" here:   / 668346764951657     / parttimepilot   (𝐏𝐏𝐋 𝐬𝐭𝐮𝐝𝐲 𝐠𝐫𝐨𝐮𝐩)   / parttimepilotifr   (𝐈𝐅𝐑 𝐬𝐭𝐮𝐝𝐲 𝐠𝐫𝐨𝐮𝐩) 🎁 And you can enroll in our free course "𝐇𝐨𝐰 𝐭𝐨 𝐁𝐞𝐜𝐨𝐦𝐞 𝐚 𝐏𝐢𝐥𝐨𝐭 & 𝐒𝐚𝐯𝐞 𝐌𝐨𝐧𝐞𝐲" here: https://parttimepilot.com/free-how-to... 🔥Already a Student Pilot? Get our 200+ page 𝐅𝐑𝐄𝐄 𝐬𝐭𝐮𝐝𝐲 𝐠𝐮𝐢𝐝𝐞 to study for the FAA Written on any device, wherever you go here... completely FREE: https://parttimepilot.com/free-study-... 💵 Recommended Products & Discounts: https://parttimepilot.com/recommended... ◽️◽️◽️◽️◽️◽️ 🛫 Timestamps: 00:00 Intro 00:30 How does the Altimeter work? ◽️◽️◽️◽️◽️◽️ 🛫 WHERE TO FIND US: 🌐 https://parttimepilot.com/   / part.time.pilot     / part.time.pilot1     / part.time.pilot