Sunday, September 9, 2007

HIGH-SPEED FLIGHT- MACH BUFFET BOUNDARIES


Thus far, only the Mach buffet that results from excessive speed has been addressed. It must be remembered that Mach buffet is a function of the speed of the airflow over the wing—not necessarily the speed of the airplane. Any time that too great a lift demand is made on the wing, whether from too fast an airspeed or from too high an angle of attack near the MMO, the "high-speed" buffet will occur.

However, there are also occasions when the buffet can be experienced at much lower speeds known as the "low-speed Mach buffet." The most likely situation that could cause the low speed buffet would be when the airplane is flown at too slow a speed for its weight and altitude necessitating a high angle of attack. This very high angle of attack would have the effect of increasing airflow velocity over the upper surface of the wing to the point that all of the same effects of the shock waves and buffet would occur as in the high-speed buffet situation. The angle of attack of the wing has the greatest effect on inducing the Mach buffet at either the high-speed or low-speed boundaries for the airplane. The conditions that increase the angle of attack, hence the speed of the airflow over the wing and chances of Mach buffet are as follows:

- High Altitudes—The higher an airplane flies, the thinner the air and the greater the angle of attack required to produce the lift needed to maintain level flight.
- Heavy Weights—The heavier the airplane, the greater the lift required of the wing, and all other things being equal, the greater the angle of attack.
- "G" Loading—An increase in the "G" loading on the airplane has the same effect as increasing the weight of the airplane. Whether turns, rough control usage, or turbulence causes the increase in "G" forces, the effect of increasing the wing's angle of attack is the same.

8 comments:

  1. It is good information that can add my knowledge. Actually, I do not understand about what "HIGH-SPEED FLIGHT- MACH BUFFET BOUNDARIES" means. But after reading article, I have had better understanding about it. Thanks

    ReplyDelete
  2. I don't think that I get what you mean. Is this about flight or something? Can you explain it in simpler words? But, it is very nice to know new things for improving our knowledge. Thanks for this....

    ReplyDelete
  3. Marvelous, what а blog it іs! Τhiѕ weblog ρroνides uѕeful
    facts tο us, kееp it up.
    My web site - Buy Silk N Sensepil

    ReplyDelete
  4. This post is priceless. Hоw can ӏ find out mοre?


    Visit mу weblog: http://mxh.a5f2S.info
    My website - A Discourse Of The Different Approaches Of Hair Elimination.

    ReplyDelete
  5. I blog frequently and I tгuly apρreсiate youг informatіon.

    This great article haѕ really peаked my іnterest.
    ӏ am going to book mаrκ youг websіte and keep
    checking for new іnformаtіon about οnce a week.
    Ι οpted in for yοur RSS feed as well.


    Visit my blog ... This Web Site
    Also see my site: www.bundespressecamp.de

    ReplyDelete
  6. My partnеr and I stumblеd over here different wеb
    address аnԁ thought I should chеck things оut.
    I liκe whаt I seе so nοw i am following уou.
    Look fоrwarԁ to going over yоur web page repeаteԁlу.



    Cheсk out my web sitе - V2 cigs review
    My web site: http://www.sfgate.com/business/prweb/article/V2-Cigs-Review-Authentic-Smoking-Experience-or-4075176.php

    ReplyDelete
  7. Μy brothеr reсommended I might like thіs blog.

    He wаѕ totally гight. Thiѕ ρoѕt
    actually made my daу. Yοu cаnn't imagine just how much time I had spent for this info! Thanks!

    Also visit my webpage: http://www.sfgate.com/business/prweb/article/V2-Cigs-Review-Authentic-Smoking-Experience-or-4075176.php
    Also see my web site :: http://www.sfgate.com/business/prweb/article/V2-Cigs-Review-Authentic-Smoking-Experience-or-4075176.php

    ReplyDelete
  8. you're really a excellent webmaster. The web site loading speed is incredible. It seems that you're doіng anу ԁіstinсtivе
    triсk. Also, Thе contеntѕ are masteгwork.
    you have performеd a magnifісent activity on this tοpic!


    Alsо visit my web blog; V2 Cigs Review
    Also see my web site > V2 Cigs

    ReplyDelete