Laserfiche WebLink
<br />.- <br /> <br />The aircraft will be based at the Montrose Airport. It <br />will carry the pilot and two crew members. A Bureau <br />scientist will a11rJays occupy the copilot seat and will <br />coordinate all missions. An instrument operator will be <br />aboard to maintain the data acquisition system, the <br />acoustical ice nucleus counter and other systems. The <br />operator will alwilYs be furnished by NAWC (North American <br />Weather Consultants) if seeding is planned, and <br />will operate the acetone seeding generator. The Bureau <br />may furnish the instrument operator on missions when the <br />airborne acetone seeding generator will not be used. <br /> <br />Plume tracing studies will be flown in VFR conditions~ <br />as described above~ back and forth perpendicular to a <br />ground-released or airborne-released line of seeding <br />materials. The leading edges of AgI will be determined <br />by the acoustical ice nucleus counter. For airborne <br />releases a "pointer" may be set at first AgI plume <br />penetration to aid in locating it later. The onboard <br />computer will use heading and true airspeed to provide <br />a CRT (cathode ray tube) display of the pointer position <br />relative to the aircraft. The pointer will essentially <br />drift with the wind to mark the seeding line position, <br />and the CRT display will show the heading and distance <br />to fly to intercept it. <br /> <br />Airflow studies will also be carried out under VFR con- <br /> <br />17 <br />