pilot balloon Definition

aerostation, aerostatics, rhysimeter, statoscope, jump jet, backstaff, machmeter, anemography, meteorometer, wind rose, air corridor, aerometer, air pocket, isotach, airometer, almucantar, centrode, lapse rate, air lane, anemograph, control surface, space probe, mach number, ballonet, planometry, pantometer, airwards, contour line, datum plane, aerometry, heliometer, airward, hydrodynamometer, coriolis force, megaseme, gravitational field, microseme, map projection, stathmograph, line of force, convertiplane, mesoseme, magnetic dip, critical angle, gravity meter, nephoscope, synchroscope, magnetic north, cathetometer, change of location, isothermobath, tellurometer, travel rapidly, helicograph, critical point, altitude, pyrheliometer, binary system, magnetograph, apparent magnitude, tangent plane, aerodonetics, artificial horizon, roche limit, climb up, haematachometer, wingover, orbital plane, anemoscope, absolute space, y level, aeroscope, cycloscope, stethograph, cartesian plane, holometer, aeroscopy, antapex, forestaff, air chamber, barrage balloon, space vehicle, weather map, deplanate, selenodesy, angle of incidence, leap second, celestial point, relativistic mass, turbulent flow, macrometer, declinator, water meter, launch window, levation, spherograph, astrometer, weather chart, relief map, isothermobathic,