منابع مشابه
A Flight Test Evaluation of the Mosquito
The Mosquito is Glasflügel's entry into the 15-meter flapped sailplane racing category, and it is a sleek, modern, fiberglass sailplane that is both meticulously engineered and pleasing to the eye. Its well-known cousins are the AS-W 20, LS-3, and Mini-Nimbus. All four made their competition debuts during the 1977 summer season. Our Dallas Gliding Association testing has already been completed ...
متن کاملشناسایی و اولویت بندی عوامل موثر بر تاخیرات پروازی و ارائه راهکاری جهت کاهش تاخیر پروازها در ایران determination of root causes of flight delays and introducing a method of mitigation of flight delays in iran
مدتی است که تاخیرات پروازی و مشکلاتی که این مهم برای مسافران پیش می آورد اذهان فعالان صنعت گردشگری بالاخص زیر شاخه این حوزه صنعت حمل و نقل و عامه مردم را به خود معطوف داشته است. بر این اساس هدف این پژوهش بررسی عوامل موثر بر تاخیرهای پروازی و راهکارهای کاهش آنها است. جامعه مورد مطالعه، شامل کلیه مدیران و کارشناسان ارشد فرودگاه های مهرآباد و امام خمینی (ره) در سال 1392 می باشد که به روش نمونه گیر...
Function of Insect Flight Muscles
In order to fly, insects require flight muscles that constitute at least 12 to 16% of their total mass, and flight performance increases as this percentage increases. However, flight muscles are energetically and materially expensive to build and maintain, and investment in flight muscles constrains other aspects of function, particularly female fecundity. This review examines ways in which ins...
متن کاملMitochondria in the Flight Muscles of Insects
1. The sarcosomes of Drosophila and the blowfly, Phormia, are dense, spherical, homogeneous bodies when isolated from flight muscle and promptly examined under the phase contrast, oil immersion objective. 2. Their average diameter in newly emerged flies is about 1 micro. This value increases rapidly during the 1st week of adult life and then becomes constant at approximately 2.5 micro. At each ...
متن کاملFree flight of the mosquito Aedes aegypti
1 Summary High speed video observations of free flying male Aedes aegypti mosquitoes, the dengue and yellow fever vector, along with custom measurement methods, enable measurement of wingbeat frequency, body position and body orientation of mosquitoes during flight. We find these mosquitoes flap their wings at approximately 850 Hz. We also generate body yaw, body pitch and wing deviation measur...
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ژورنال
عنوان ژورنال: Nature
سال: 1952
ISSN: 0028-0836,1476-4687
DOI: 10.1038/1691101a0