оболонка аеростата
flight envelope / performance envelope / service envelope
barrage balloon
balloon bed
balloon observation
balloon tire
balloon wing
balloon-launched aeroballistic
ballonet balloon
balloon
observation balloon
balloon probe
balloon sounding
captive balloon
constant-level balloon
dirigible balloon
free balloon
pilot balloon
radiosonde balloon
target balloon
engagement envelope
cupro-nickel envelope
exposed envelope
fire envelope
fire exposed envelope; fire hazard area
atmospheric envelope
air envelope
fixed envelope
gaseous envelope
insulation envelope
thermal protection envelope
envelope
authorized flight envelope