A blimp, or non-rigid airship, is a floating airship without an internal supporting framework, or keel.

A non-rigid airship differs from a semi-rigid airship and a rigid airship ( e. g., a Zeppelin ) in that it does not have any rigid structure, neither a complete framework nor a partial keel, to help the airbag maintain its shape.

The main types of airship are non-rigid ( or blimps ), semi-rigid and rigid.

In a non-rigid airship the envelope is the outer surface of the aircraft, containing the ballonets within it.

In modern common usage, the terms Zeppelin, dirigible and airship are used interchangeably for any type of rigid airship, with the term blimp alone used to describe non-rigid airships.

In modern technical usage, airship is the term used for all aircraft of this type, with Zeppelin referring only to aircraft of that manufacture, and blimp referring only to non-rigid airships.

* Akron ( non-rigid airship ), a hydrogen-filled airship built in 1911 which burned offshore near Brigantine, New Jersey

* ZPG-3W, a non-rigid airship built by the Goodyear Aircraft Company

* March 4 – 15 – A United States Navy blimp sets a duration record for a non-rigid airship, traveling 9, 448 miles ( 15, 205 km ) in 264 hours 12 minutes.

It was later used on HMA ( His Majesty's Airship ) No. 9r, a British rigid airship that first flew in 1916 and the twin 1930s-era U. S. Navy rigid airships USS Akron and USS Macon that were used as airborne aircraft carriers, and a similar form of thrust vectoring is also particularly valuable today for the control of modern non-rigid airships.

The volume of air in a non-rigid container ( such as a diver's lungs or buoyancy compensation device ), decreases as external pressure increases while the diver descends in the water.

Likewise, the volume of air in such non-rigid containers increases on the ascent.

While a rigid solid object the size and mass of a rocky planet or gas giant could not be built using any currently known material, such a structure could be built as a low-density lattice with a mass comparable to a large moon or a small rocky planet but a far larger volume, or as a solid but non-rigid structure with the mass and density of a planet ( as long as the internal heat gradient is carefully controlled to prevent convection ).

It is used for cutting non-rigid and porous material such as textiles, foam, or leather, that may be too difficult or impossible to cut with roll-fed plotters.

Despite the preference for flying boats and seaplanes, non-rigid blimps were also developed for anti-submarine patrol, the airships being built in a number of types, such as the SS class, the SST class, the SSP class, and the SSZ class.

A windsport is any type of sport which involves wind-power, often involving a non-rigid airfoil such as a sail or a power kite.

It is worth noting that some philosophers, such as Gareth Evans have expressed doubt as to whether non-rigid expressions ought to be called designators at all.

Similarly, a non-rigid container like a toy balloon will be affected, as will the rib cage of a human SCUBA diver, and such systems will vary in buoyancy.

He became convinced that medium sized, semi-rigid airships were superior to non-rigid and rigid designs.

In case of non-rigid rotors, the first order centrifugal distortion correction is given by

In the philosophy of language and modal logic, a non-rigid designator ( or flaccid designator ) is a term that does not extensionally refer to the same object in all possible worlds.

The non-rigid rotor is an acceptably accurate model for diatomic molecules but is still somewhat imperfect.

Flexural rigidity is defined as the force couple required to bend a non-rigid structure to a unit curvature.

A non-rigid or deformable body may be thought of as a collection of many minute particles ( infinite number of DOFs ); this is often approximated by a finite DOF system.

The initial non-rigid aircraft was called the A-limp ; and a second version called the B-limp was deemed more satisfactory.

The first aircraft to make routine controlled flights were non-rigid airships ( later called " blimps ".

Other methods are designed to work with non-rigid ( bendable ) objects, e. g. for posture independent shape retrieval ( see for example Spectral shape analysis ).

Rigid designators are contrasted with non-rigid or flaccid designators, which may designate different things in different possible worlds.

Fabrics can be used to produce non-rigid temporary structures that are more like tree tents than tree houses.

In generative grammar, non-configurational languages are languages characterized by a non-rigid phrase structure, which allows syntactically discontinuous expressions, and a relatively free word order.

*- Energy-saving technology and computerized equipment for vibration stabilization of residual stress ( the only CIS 35-year-old Scientific School, who presented in 1988, the world's first installation of computer diagnostics ) are intended to stabilize the residual stresses in welds, castings and other non-rigid dynamic metal

* niftyreg: a toolbox for doing near real-time robust rigid, affine ( using block matching ) and non-rigid image registration ( using a refactored version of the free form deformation algorithm ).

The advantage of this design was that the aircraft could be much larger than non-rigid airships, which relied on a slight overpressure within the single pressure envelope to maintain their shape.

This technology can also be used for the manufacture of thin film solar cells, which can be deposited on glass, but also on PET substrates or other non-rigid materials.

Following the puzzling performance of Explorer I in orbit, he published the first explanation ( 1958-9 ) of the observed spin instability of satellites, in terms of the Poinsot motion of a non-rigid body with internal friction.

However, the pitching and rolling of the body of a non-rigid vehicle adds some ( small ) weight transfer due to the ( small ) CoM horizontal displacement with respect to the wheel's axis suspension vertical travel and also due to deformation of the tires i. e. contact patch displacement relative to wheel.

Kimmel's interest in recent years has been non-rigid shape processing and analysis, medical imaging, computational biometry, numerical optimization of problems with a geometric flavor,

Up to the end of the First World War, 22 Parseval airships ( both non-rigid ( blimps ) and semi-rigid ( with keels )) were built.

On June 1, 1944, two K-class blimps from Blimp Squadron ZP-14 of the United States Navy ( USN ) completed the first transatlantic crossing by non-rigid airships.

The design is based on a high altitude airship which uses its envelope to focus sunlight onto a tube.

As Starman, McNider uses various star-themed gadgets, including an airship designed by the Red Torpedo.

One of the earliest uses of air launching used an airship as a carrier and docking station for biplane parasite fighters.

She uses the distraction to kill those by their airship, and then heads up to the palace where the city's populace are being kept.

* Integrated Sensor is Structure, project to develop an airship for intelligence uses

The two airship sheds ceased being part of the RAF Cardington site in the late 1940s and they were put to other uses.

He also uses gadgets from his pockets or by calling his airship in order to save the day.