CURRENT AFFAIRS

Detailed explanation-1: -Series. The RH-75, the first sounding rocket developed by India, It weighed 32 kilograms (71 lb), had a diameter of 75 millimetres (3.0 in) and flew 15 times between November 1967 and September 1968.

Detailed explanation-2: -Weather observations, up to an altitude of 75 km, are done with rocketsondes, a kind of sounding rocket for atmospheric observations that consists of a rocket and radiosonde. The sonde records data on temperature, moisture, wind speed and direction, wind shear, atmospheric pressure, and air density during the flight.

Detailed explanation-3: -The main difference between a sounding rocket and an orbital launch vehicle is the velocity reached. In fact, a sounding rocket does not reach the velocity (in terms of (km/s)) needed to go into orbit, and after achieving the maximum altitude comes back to Earth.

Detailed explanation-4: -Sounding rockets range in size, performance, and cost from simple, single-stage solid-propellant rockets that can lift a 5.4-kilogram (12-pound) meteorologic payload 60 km to two-stage solid-propellant vehicles capable of lifting a 22-kilogram payload to 3, 000 km.