Aviation and Flight Principles

TAF wind format is dddffGfmKT: 3-digit direction (350), 2-digit speed (12), G for gust, 2-digit gust speed (25), and KT for knots. This means winds from 350 degrees at 12 knots gusting to 25 knots.

TAF wind notation uses 3 digits for direction followed by 2 digits for speed. 18010KT means winds from 180 degrees (south) at 10 knots.

Decision height (DH) or Decision Altitude (DA) is the specified height/altitude in a precision approach at which a missed approach must be initiated if the required visual reference is not established. This is a critical safety point in instrument approaches.

Supersonic refers to speeds exceeding the speed of sound (Mach 1). Aircraft like the Concorde and fighter jets are supersonic planes. 'Ultrasonic' refers to sound frequencies above human hearing, not aircraft speed.

Average speed = (Total Distance)/(Time Taken); D/(3D/(4*200) + D/(4*240)) = 208.6

The velocity along the runway (horizontal component) = total velocity × cos(angle of takeoff). Given: v = 100 km/hr, angle = 30°. Horizontal component = 100 × cos(30°) = 100 × (√3/2) = 100 × 0.866 = 86.6 km/hr. This is the component parallel to the runway. The vertical component would be v × sin(30°) = 50 km/hr. Option B (76), C (70), and D (50 - which is the vertical component) are incorrect.

Supersonic speed is defined as a rate of travel that exceeds the speed of sound in a given medium. When an aircraft travels faster than sound, it creates shock waves known as a sonic boom. This term is derived from the Latin words for 'above' and 'sound'.

Light travels at approximately 300,000 kilometers per second in a vacuum, which is significantly faster than sound or any physical vehicle like a rocket or plane.

Jet engines operate on the principle of conservation of linear momentum (Newton's third law), where the high-speed exhaust gas ejected backward creates a forward thrust.

Light travels at approximately 300,000 kilometers per second in a vacuum, which is significantly faster than the speed of sound or any man-made vehicle. Sound requires a medium and travels much slower.

At high altitudes, there is very little atmosphere to scatter sunlight. Because there is no scattering of blue light, the sky appears black, similar to the view from space.

An altimeter is an instrument used to measure the altitude or height of an object above a fixed level, such as sea level.

Yawing refers to the side-to-side movement of the fish's head as it swims. It is a rotational movement around the vertical axis.

The shape of an aeroplane is designed in a manner similar to the shape of a bird to reduce fluid friction.

In statement (1), no information is given regarding the speed of the plane. From statement (2), it is given that in 1 second, the plane covers = 1/9 km. So, in 3600 seconds, the plane covers = 400 km. This implies that the speed of the plane is 400 km/hr. So, the correct option is (2).