Yearly Archives: 2016


Wing layout in aircrafts 238

In any flying aircraft or drone a wing is the most crucial part of the plane since the aerofoil is responsible for the lift. In order to understand more on wing construction visit airplane wing & landing gear structure.That being said there are many types of wing layout: – Elliptical […]


Helicopter layouts 229

There are many types of helicopters, the helicopter layouts are different and consists of the following types :- classical layout  – it is also known as Sikorsky,this is the commonly used type and consists of a horizontally rotating main rotor and vertically rotating tail rotor.  Notar – it an abbreviation […]


Propellers & trimming 439

A propeller gives propulsive force from rotary motion of an engine  either directly or by gear reduction as shown in my jet engine article. Propellers are not only used in small aircraft they are also used in turboprops. FORCES ACTING ON A PROPELLER Centrifugal force – it is the force […]


Factors determining pavement design 237

There are many factors that determine pavement design. this includes the following :- Axle configuration – in car design providing more axles enables it to carry more load, this more load needs  to be pre-determined in design. this ranges from single unit trucks, convectional combination vehicles & longer combination vehicles. […]


D.c Motors 452

A d.c motor is a machine that converts electrical energy to mechanical energy. In opposite this d.c machine works as a generator i.e converting  mechanical energy. MAIN CONSTRUCTIONAL FEATURES A motor has two main parts :- Stator – is the stationary member consisting of the field system. Rotor – is […]


Surveying 665

Surveying is the art of making measurements of the relative positions of natural and man made features on earth surface and plotting this measurement to suitable scale to form a map plan or section. PRIMARY DIVISION OF SURVEYING Geodetic surveying – this is the type of survey in which curvature […]


Stairs 411

stairs are means of descending or ascending from one floor level to another by a series of steps. PARTS OF A STAIR Riser – is the vertical face of a step Rise – vertical distance between to consecutive treads Tread – horizontal surface of the stair that is stepped on […]


Types of roofs 155

In the building industry whether due to structural integrity, formality or aesthetics there are many types of roofs. This include :- Saddle roof  – this is a concave roof that curves inwards from a high top. it can also be a hyperbolic paraboloid roof.  flat roof – this is basically […]


Inner workings of a cell tower 723

A cell tower is a pylon rising up in the air that holds communication and data devices of the telecommunication industries. At its base is the service providers equipment shelter better known as BTS that houses radio transmitters and receivers that allow communication between the phones and tower. The radio […]


Aircraft Pressurization 601

Pressurization is the process of increasing air pressure inside an aircraft specifically the cabin. This is done due to reduce trapped gas, decompression sickness & hypoxia which is a condition of insufficient oxygen. An aircraft flies in high altitudes because it consumes less fuel due to low turbulence, it also […]