Monday, 4 March 2013

Apa Sebenarnya Jejak Pesawat di Angkasa itu?

Coba amati angkasa, kita tentu pernah melihat jejak pesawat di langit yang terlihat seperti asap ataupun awan yang membentuk garis putih memanjang. Sekilas jejak tersebut tampak seperti ekor pesawat.

Benarkah jejak putih itu adalah asap sisa pembakaran bahan bakar pesawat terbang?

Jika iya, berarti telah terjadi polusi udara. Keadaan ini sama dengan polusi udara yang dikarenakan asap knalpot mobil dan motor. Asap tersebut berasal dari sisa pembakaran bensin dan solar.

Ternyata jejak putih itu bukan asap seperti dugaan kita. Jejak itu terhentuk sebagai akibat penguapan butiran-butiran es yang ada di angkasa. Butiran es menguap saat dilewati pesawat.

Apa Sebenarnya Jejak Pesawat di Angkasa itu?

Perbedaan suhu

Butiran-butiran es di angkasa terbentuk dari uap air yang membeku karena suhu yang superdingin.

Penguapan butiran-butiran es itu akibat perbedaan suhu antara sayap pesawat yang panas dan suhu udara di sekitar pesawat yang superdingin.

Pemanas di sayap pesawat akan dinyalakan oleh pilot mulai sebelum pesawat diterbangkaii sampai saat pesawat mendarat kembali. Tujuannya agar mesin pesawat tidak membeku saat terbang

Sebelumnya kita perlu tahu suhu di angkasa semakin tinggi akan semakin dingin.

Pada ketinggian 10.000 meter, suhu udara bisa mencapai minus 50 derajat Celsius. Pesawat yang dapat membuat jejak putih adalah pesawat yang terbang dengan ketinggian sekitar 10.000 meter di atas permukaan bumi.

Jadi, jejak putih dari pesawat itu sebenarnya adalah gas atau uap buangan pesawat yang terkondensasi oleh dinginnya suhu pada ketinggian tertentu.

Kondensasi atau penguapan es terjadi karena pada seluruh bagian sayap pesawat terdapat pemanas.

Sayap dan gas buang yang panas akan membuat butiran-butiran es di angkasa yang dilintasi pesawat menguap (terkondensasi) sehingga menimbulkan jejak putih seperti asap.

Uap air dan asap

Kalau ternyata jejak pesawat itu bukan asap, lalu bagaimana dengan jejak pesawat jet yang terbang rendah dalam pertunjukan di udara atau sering disebut aircraft performance?

Pesawat jet dapat meninggalkan jejak asap seperti awan meski tidak terbang pada ketinggian 10.000 meter karena bahan bakar pesawat jet adalah hidro karbon (hydro carbon) yang mengandung hidrogen dan karbon.

Dalam pembakaran di mesin pesawat karbon menciptakan asap sedangkan hidrogen keluar sebagai uap air dari mesin jet.

Kombinasi uap air dan asap ini akan membentuk jejak pesawat jet dengan bentuk lebih tebal dan lebih jelas dibandingkan jejak pesawat biasa.

Share:

29 comments:

  1. thanks ilmu nya (h)

    ReplyDelete
  2. Berarti semua pesawat komersil gitu y??

    ReplyDelete
  3. bagaimana kaitannya dengan terik matahari y?

    ReplyDelete
  4. Hi, I’m Smith warner. I’m a student living in Miami, Florida. I am a fan of technology, design, and software. I’m also interested in web development and Software. You can visit my website with a click on the button Below.

    Mcafee.com/activate
    Mcafee activate
    Mcafee Activate 25 digit code
    norton.com/setup
    norton setup
    office.com/setup
    office setup
    office.com/setup
    office setup

    ReplyDelete

  5. This is a tool in Microsoft Word that checks what you’re typing as you type it. It has a list of sequences of characters to look for. If you type some characters that match one of the entries in the list, the program automatically changes what you typed to what it thinks should be there (by what is specified in the list). By default, the list that AutoCorrect uses contains the most common typos and spelling errors, along with some symbols
    Office.com/Setup |
    office Setup |
    mcafee.com/activate |
    mcafee activate |

    pencil penting

    ReplyDelete
  6. I am very happy to reading your blog. I really impressed with your story. Now it’s very difficult to give quality content to users. Thanks for sharing this blog.
    Best Regards – pbs.org/activate

    ReplyDelete
  7. This comment has been removed by the author.

    ReplyDelete
  8. This comment has been removed by the author.

    ReplyDelete
  9. I like this blog very much, Its a very nice billet to read and incur Inf

    ReplyDelete
  10. Really mean a lot. Thanks for sharing your valuable post. I like the way of the elaboration of your topic so please keep informative posting. I am waiting for your next post, so please give us a link to your next post here and visit Garmin Express Update for Garmin help.

    ReplyDelete
  11. Usually I never comment on blogs but your article is so convincing that I never stop myself to say something about it. You’re doing a great job Man,Keep it up. Visit:- Black Friday deals Walmart | Walmart Black Friday deals | Black Friday deals Walmart | Amazon Black Friday deals | black friday gaming laptop deals | Black Friday | Turbotax Login | AOL Mail Login | Aol Login | Cash App Login.

    ReplyDelete
  12. If you love traveling, then Garmin Express is of great use for you, who is in constant need to track their location and navigation. Garmin Express is a desktop software to help you manage, update, and set up your Garmin device. Do the Garmin express update is very simple.

    ReplyDelete
  13. Your way of working is very interesting and amazing. I really like it very much. I want more similar topics about this post to increase our knowledge. Thanks for sharing and keep sharing. Know about fubo.tv/activate.

    ReplyDelete
  14. Visit www.mcafee.com/activate to get your 25-digit activation key. Then reach www.mcafee.com/activate for downloading and activating McAfee.

    ReplyDelete
  15. really happy found this website eventually. Really informative and inoperative, Thanks for the post and effort! Please keep sharing more such blog.


    office.com/setup
    www.office.com/setup
    office setup
    mcafee.com/activate
    www.mcafee.com/activate
    bitcoin login

    ReplyDelete
  16. att bellsouth login email
    Blog remarking is something that assists with getting quality backlinks for your site.att bellsouth login email administrations are a piece of innovation. att bellsouth login email is a email services, which out by Bellsouth a couple of decades ago. Now, the email is part of AT&T just like SBCGlobal email. AT&T bought both the email services and merged them into its AT&T email. Now, if you want to access your att bellsouth login email, then you will have to go to att.net page and log into your email account there.
    for more info :- https://sites.google.com/view/att-bellsouth-email-login/home

    ReplyDelete
  17. Wow, marvelous blog structure! How long have you ever been running a
    blog for? you make running a blog look easy.
    The entire glance of your web site is excellent, as smartly
    as the content!
    smartgit
    rhino crack
    acronis true image crack
    nero burning rom crack

    ReplyDelete
  18. I went to your website. I admire you and your efforts. I appreciate your efforts.
    If you're looking for the most recent edition and what's new, you've come to the right place.
    I hope you find this website useful. Thanks.
    traktor dj software crack
    mipony pro crack
    passfab ios password manager crack

    ReplyDelete
  19. This is truly fascinating and helpful information.
    I appreciate you sharing this information.
    share your knowledge with us
    Please let us know.
    Thank you for providing this information.
    aiseesoft total video converter crack
    navicat premium crack
    webcam max crack
    cleanmypc crack activation code

    ReplyDelete
  20. Your Article is so good and readble thanx for sahring this content. Best office furniture manufacturer in India. https://sites.google.com/view/sexologist-near-me,

    ReplyDelete
  21. You have a great site, but I wanted to know if you know.
    Any community forum dedicated to these topics.
    What was discussed in this article? I really want to be a part of it.
    A society in which I can obtain information from others with knowledge and interest.
    Let us know if you have any suggestions. I appreciate this!
    easeus partition master crack
    cyberghost vpn crack
    coreldraw 2018 crack
    templatetoaster crack

    ReplyDelete
  22. Whoah, your site is incredible; I enjoy reading your reminiscences.
    Keep up the wonderful job!
    As you can see, many people are hunting for this knowledge, and you may greatly assist them.
    asphalt crack
    asphalt crack
    teamviewer crack

    ReplyDelete
  23. I am very impressed with your post because this post is very beneficial for me and provides new knowledge to me.
    Ashampoo Office
    Fotor for Windows
    Topaz Video Enhance AI

    ReplyDelete
  24. ---------------------------
    Save
    ---------------------------
    Save file "new 1" ?
    ---------------------------
    Yes No Cancel
    ---------------------------

    ReplyDelete