Precision airdrops

Precise high altitude air drops require wind and air density profile from the flight altitude to the surface. Vaisala dropsonde system, AVAPS Receiving systems and RD94 Dropsonde, provides the answer. The AVAPS Receiving system installed in the aircraft collects measurement data from the disposable dropsondes.

Dropsonde is a meteorological instrument measuring the profile of atmospheric pressure, temperature, humidity and wind from the flight level to the surface. Dropsonde is released from the aircraft and it descends with a stabilized parachute ensuring proper measurements of the atmospheric parameters. The ascent speed at sea level is about 11 m/s. The dropsonde can be released from all flight altitudes.

Airborne equiment consists of the AVAPS Receiving system, launcher to release dropsondes from the aircraft cabin, and GPS and UHF telemetry antennas.