Definition
A type of rigid airship built around an internal metal framework that holds its shape regardless of internal gas pressure. The framework contains multiple separate gas cells filled with a lighter-than-air gas (originally hydrogen, later helium), and the whole structure is covered with an outer fabric skin. Engines and control surfaces are mounted on the hull, allowing the craft to be steered and propelled rather than just drifting with the wind.
Plain English
A large cigar-shaped flying craft that stays up because it is filled with a gas lighter than air. Unlike a balloon, it has a hard internal skeleton that keeps its shape, and it has engines so it can be flown in a chosen direction.
Context Anchor
Seen in airframe history, lighter-than-air aircraft discussions, and maintenance descriptions of rigid airship structure.
Derivation
Named after Count Ferdinand von Zeppelin, the German officer who designed and built the first successful rigid airships in the early 1900s. Over time the family name became a general term for any airship of that rigid-framework type.
Why Pilots Care
Zeppelins are the historical example used to explain rigid airship construction — the difference between rigid, semi-rigid, and non-rigid (blimp) lighter-than-air craft. Understanding the term helps when reading about airframe history and structural categories.
Intuition Check
Do not use Zeppelin to mean any balloon-like aircraft. In aviation, it specifically means a rigid airship with an internal frame.
Example Sentence 1
The chapter on lighter-than-air aircraft uses the Zeppelin as the classic example of rigid airship construction.
Example Sentence 2
Maintenance records for the restored Zeppelin noted that each gas cell had to be individually inspected for leaks before flight.