Silahkan Login atau Signup
  Home     e-Store     Etalase     Keranjang     Pembayaran     Cara Pemesanan     Tutorial     Recruitment     Kontak  
           Bantuan & Dukungan
WhatApps, Line, WeChat

          Didukung Oleh:

Friday, 14-Dec-2018

 Bandung-Aeromodeling >> Tutorial >> Aerodynamics >> How Aircraft Can Fly


    How Aircraft Can Fly

(Click to Enlarge Thumbnail)

Date Created: 01-Jun-2013
Created By: Budi Atmoko
Category: Aerodynamics

How Aircraft Can Fly

Basic theory of How the air move and push the aircraft to fly

Founded by Daniel Bernoulli

Aircraft can fly phenomena is founded three centuries ago, Daniel Bernoulli, a Swiss mathematician, explained how the pressure of a moving fluid (liquid or gas) varies with its speed of motion. Specifically, he stated that an increase in the speed of movement or flow would cause a decrease in the fluid’s pressure. This is exactly what happens to air passing over the curved top of the airplane wing.

A practical application of Bernoulli’s theorem is the venturi tube. The venturi tube has an air inlet which narrows to a throat (constricted point) and an outlet section which increases in diameter toward the rear. The diameter of the outlet is the same as that of the inlet. At the throat, the airflow speeds up and the pressure decreases; at the outlet, the airflow slows and the pressure increases.

If air flow is moving through an aircraft wing with a specific form, thickness, and angle the air flow a part will be deflected over the wing which has higher air flow speed and air pressure will drecreased and other part is deflected under the aircraft wing which has slower air flow speed and higher air pressure.

Lift Force

The Pressure difference between air flow part deflected under aircraft wing and air flow part deflected over the aircraft wing will create an air pressure force with a direction from under aircraft wing to top aircraft wing. This air pressure force is known also as Lift Force

If air flow is moving through an aircraft wing, it will create a certain Lift Force with perpendicular direction to the air flow. Base on the above phenomena, If an aircraft wing is moved through air with a certain speed, aircraft will have a Lift Force on it’s wing. The faster aircraft moved, the greater Lift Force created. If Lift Force created at aircraft wing is greater than aircraft weight, then aircraft will be forced to fly.


The Bernoulli phenomena is working on the specific form of the aircraft wing. The aircraft wing is not a common form. Not just a flat or thick form but have a specific form. This form (ussually called airfoil), has nearly flat at the bottom and thick at the top of the wing. According The Bernoulli rule, if air flowing to this airfoil, there will be a different air speed between air flowing under the wing and air flow over the airfoil. This air flow speed differences will create Pressure and Lift Force at the aircraft wing. A certain thick size at the top side of the wing is design to create a specified Lift Force required (with a certain air flow speed) by the aircraft, to fly and also movement of the aircraft.

It should be understood that different airfoils have different flight characteristics. Many thousands of airfoils have been tested in wind tunnels and in actual flight, but no one airfoil has been found that satisfies every flight requirement. The weight, speed, and purpose of each airplane dictate the shape of its airfoil. It was learned many years ago that the most efficient airfoil for producing the greatest lift was one that had a concave, or “scooped out” lower surface. Later it was also learned that as a fixed design, this type of airfoil sacrificed too much speed while producing lift and, therefore, was not suitable for high-speed flight. It is interesting to note, however, that through advanced progress in engineering, today’s high-speed jets can again take advantage of the concave airfoil’s high lift characteristics. Leading edge (Kreuger) flaps and trailing edge (Fowler) flaps, when extended from the basic wing structure, literally change the airfoil shape into the classic concave form, thereby generating much greater lift during slow flight conditions.

1821 people view it


  Tutorial Teranyar (lihat semua)

Setting dan Menerbangkan Free Flight Glider R/C OPTIMAE 2500 Electric
Merakit dan membuat Free Flight Glider R/C OPTIMAE 2500 Electric. Untuk siswa yang belajar pesawat free flight namun di kontrol oleh Radio Kontrol ... (Lihat)
Date Created: 08-Apr-2014
4924 people view it

Merakit dan membuat Free Flight Glider R/C OPTIMAE 2500 Electric
Merakit dan membuat Free Flight Glider R/C OPTIMAE 2500 Electric. Untuk siswa yang belajar pesawat free flight namun di kontrol oleh Radio Kontrol ... (Lihat)
Date Created: 24-Mar-2014
8101 people view it

Bagaimana merakit dan menerbangkan Rubber Powered Glider Pelangi-45
Merakit dan menerbangkan Rubber Powered Glider Pelangi-45 ternyata asyik juga, wah anak kecil juga bisa ya ? ... (Lihat)
Date Created: 17-Mar-2014
17164 people view it

  Tutorial Unggulan (lihat semua)

Asyiknya Belajar Merakit Sendiri Pesawat Model
Pelajar juga bisa merakit Pesawat Pelangi 50 chuck glider dan Pelangi 70 rubber powered Glider ... (Lihat)
Date Created: 01-Jun-2013
10117 people view it

  Produk Baru (lihat semua)
Aerograde AA Balsa Sheet 1.5mm
Price: Rp. 14,000
View: 1,000

FlySky FS-i6 2.4G 6CH AFHDS RC Transmitter With FS-iA6B
Price: Rp. 965,000
View: 142

Balsa Stick
Price: Rp. 12,000
View: 1,000

  Produk Unggulan (lihat semua)
Cessna 206 Electric Trainer
Price: Rp. 600,000 / Rp. 725,000 / Rp. 825,000
View: 1,000

Pelangi 70 Free Flight Rubber Powered Glider (Pack of Six)
Price: Rp. 390,000 / Rp. 410,000 / Rp. 425,000
View: 1,000

Cessna 400 Electric Trainer
Price: Rp. 495,000 / Rp. 625,000 / Rp. 725,000
View: 1,000

 Tetang Kami   Tanya Jawab   Kontak Kami 
Copyright @ 2013, 2014 Allrights reserved.