Volume changes of the lifting gas due to temperature changes or to changes of altitude are compensated for by pumping air into internal ballonets (air bags) to maintain the overpressure. Without sufficient overpressure, the blimp loses its ability to be steered and is slowed due to increased drag and distortion.
Maurice Jarre The publisher credits Barry Devorzon and Perry Botkin with composing Nadia's Theme. Maurice Jarre.
Nadia Petrova (Bulgarian: Ð½Ð°Ð´Ñ Ð¿ÐµÑÑÐ¾Ð²Ð°) was a vampire and a member of The Travelers who was Katerina Petrova 's daughter, making her an ancestor of Elena Gilbert and a descendant of Amara.adia Petrova is the daughter of Katerina Petrova. Katherine gave birth to Nadia back in 1490, but Nadia was taken from her before Katherine even got the chance to hold her.