NASA Technical Report CR-1223, which gives the lowdown on “Rapid (Explosive) Decompression Emergencies in Pressure-Suited Subjects,” includes a review of “human accidents involving explosive decompression.” The effects are unpleasant, to say the least. Climbers did fine at sea level, but as they reached higher altitudes, they found it difficult to answer even simple questions. (As a control, they were tested at base camp as well.) Tests included simple verbal puzzles (“If I say that Jack stole Ann’s ball, who is the thief?”), and sentence repetition. Subjects were tested at various stops along the summit. To see how oxygen deprivation affects the brain, take a look at this PBS feature about climbers scaling Mount Everest. If one pilot of a two-pilot crew is away from the controls, then the pilot that is at the controls must wear and use an oxygen mask that is secured and sealed.”) (The same circular notes “One pilot does not need to wear and use an oxygen mask if both pilots are at the controls and each pilot has a quick donning type of oxygen mask that can be placed on the face with one hand from the ready position and be properly secured, sealed, and operational within 5 seconds. But at 43,000 feet, the time drops to a mere 5 seconds, hardly long enough to don an oxygen mask. In an aircraft at 22,000 feet, passengers and crew would have 5 minutes of “useful consciousness” after rapid decompression. The FAA (in its Advisory Circular 61-107A) provides a helpful chart showing just how long crewmembers are able to perform flight duties with an insufficient supply of oxygen. That’s not to say sudden decompression isn’t a danger. In fact, such a hole would account for less air leakage than what is normally lost around door and window seals.” A bullet hole is far smaller than the opening of the outflow valve. “A bullet hole in a cabin wall would have no perceived effect on cabin pressure…. “Reality simply does not work that way,” explains Lombardo. Someone on the ground shoots a hole into the side of an aircraft and it results in total loss of cabin pressure with paper, food trays, and baggage flying everywhere.” Pilot and author David Lombardo writes in his book Advanced Aircraft Systems: “Hollywood has fostered an image of rapid cabin depressurization that has come to be known as explosive decompression. She wants to know what happens if the cabin rapidly depressurizes. Silver doesn’t mean the ordinary pressurization and depressurization that happens on every flight after takeoff and before landing. We believe everyone is a creator, so this tool was made for everyone.It may have been speculation about the cause of the Air France Flight 447 crash this summer that led Faithe Silver, of Tampa, Florida, to ask: “How often do commercial airliners experience cabin depressurization in flight?” Our mission is to provide fast, accessible tools to empower creators and their stories.
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Kapwing's Video Compressor works for free! Use it to compress video on Windows, Mac, tablets, Chromebooks, iPhones, or Android phones. Upload any file to compress or reduce its file size online. Kapwing supports MP4, MOV, MP3, FLV, AVI, WEBM, and website links.
#Movie decompressor free
This free online video compressor is also the best way to compress files for email, Google Slides, or Discord.
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Once your compressed video is finished exporting, you can download your compressed video, share across social media platforms like Facebook, Twitter, or TikTok, or send to others using the video link. Choose what resolution you’d like your video to be and when ready, export your project as any file type: MP4, GIF, Image, or MP3. Head to the Export Settings in the video editor and adjust the file size slider to determine how much you want to compress your video. To get started, upload your video file or paste a video URL link in Kapwing. Kapwing’s all-in-one video editor supports all of these workflows while also allowing you to make edits such as trimming clips, adding text and image overlays, combining videos with audio, and much more. Once you’ve selected how compressed you want your video, you can choose to convert your video to a different file type or select the resolution of your video to ensure the best quality possible. With Kapwing’s video compressor, you can compress videos while still controlling the quality of your video. Oftentimes when we’re trying to share our content with others online, we’re hit with a pop-up window notifying us that we’ve exceeded our file size limit- sometimes as small as 8MB.
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