An Investigation of the Dynamic Stability Characteristics of a Quad Configuration, Ducted-Propeller V/Stol Model. Volume IV. The Longitudinal Stability Characteristics of a Quad Configuration, Ducted-Propeller V/Stol Model at High Duct Incidence

1969 ◽  
Author(s):  
Jr Curtiss ◽  
Howard C.
Keyword(s):  
Dynamic Stability ◽  
Longitudinal Stability ◽  
Ducted Propeller

scholarly journals Longitudinal Stability Criteria for a Propeller-Driven Aircraft

2010 ◽  
Vol 2010 ◽  
pp. 1-7
Author(s):  
Gil Iosilevskii
Keyword(s):  
Dynamic Stability ◽  
Center Of Gravity ◽  
Moment Of Inertia ◽  
Stability Criteria ◽  
Longitudinal Stability ◽  
Longitudinal Dynamic ◽  
Upper Limit ◽  
Stability Derivatives ◽  
Speed Stability ◽  
Long Endurance

The Routh criterion is used to assess longitudinal dynamic stability of a propeller-driven aircraft. Under a few plausible assumptions on possible ranges of the pertinent stability derivatives, it reduces to a pair of simple conditions imposing a traditional aft limit (the forward of the maneuver and the neutral-speed-stability points) on the center-of-gravity position and an upper limit on the longitudinal moment of inertia. It is demonstrated that most aircraft have sufficiently small inertia to remain stable as long as their center-of-gravity is properly placed. At the same time, sailplane-like aircraft (as, e.g., long endurance UAVs), with an engine installed at the rear extremity of the aircraft, may have sufficiently high inertia to become unstable regardless of their center-of-gravity placement.

Molecular insights on the dynamic stability of peptide nucleic acid functionalized carbon and boron nitride nanotubes

2021 ◽  
Vol 23 (1) ◽  
pp. 219-228
Author(s):  
Nabanita Saikia ◽  
Mohamed Taha ◽  
Ravindra Pandey
Keyword(s):  
Nucleic Acid ◽  
Boron Nitride ◽  
Nucleic Acids ◽  
Dynamic Stability ◽  
Peptide Nucleic Acid ◽  
Rational Design ◽  
Peptide Nucleic Acids ◽  
Boron Nitride Nanotubes ◽  
Molecular Hybrids ◽  
Single Wall Nanotubes

The rational design of self-assembled nanobio-molecular hybrids of peptide nucleic acids with single-wall nanotubes rely on understanding how biomolecules recognize and mediate intermolecular interactions with the nanomaterial's surface.

When Rows Look Like Columns: Dynamic Stability of Grouping by Proximity

2000 ◽  
Author(s):  
Helena Kadlec ◽  
Iris Van Rooij ◽  
Valerie A. Gonzales
Keyword(s):  
Dynamic Stability

Longitudinal Stability of Aeroplanes

1908 ◽  
Vol 66 (1714supp) ◽  
pp. 292-292
Author(s):  
Henry T. Strong
Keyword(s):  
Longitudinal Stability
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