Laminar slip flow in a flat duct or a round tube with uniform wall heat transfer
Low density phenomena effect on heat transfer for laminar flow in flat duct or circular tube with uniform wall heat flux
FLAT SURFACE↗
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Search indexed NASA NTRS and DOE OSTI research on propulsion, heat transfer, battery materials and energy systems. Follow report and document links to the original sources.
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Flight investigation of stability and control characteristics of a 0.18-scale model of a four-duct tandem V/STOL transport
Flight stability and control tests of scale model of four-duct tandem V/STOL aircraft
GROUND EFFECT↗
Sub-Alfvenic flow in a duct with a nonuniform magnetic field
Flow of conducting fluid in duct with nonuniform magnetic field
NONUNIFORM MAGNETIC FIELD↗
Wind tunnel investigation of longitudinal aerodynamic characteristics of a powered four-duct-propeller VTOL model in transition
Wind tunnel stability tests of longitudinal aerodynamic characteristics of powered four-duct propeller VTOL model in transition
PROPELLER↗
Aerodynamic stability and control of ducted- propeller aircraft
Test results from studies of small and large powered models of a dual, tandem, ducted-propeller VTOL design are reviewed, with emphasis on stability and control characteristics through the transition speed range. The characteristics are generally satisfactory. Stability augmentation may be required to reduce Dutch roll tendencies. Further study is needed to evaluate the apparently large side-force gradients in sideslip. Reductions in control effectiveness due to ground proximity are similar to those for tilt-wing V /STOL designs.
AERODYNAMIC STABILITY↗
Acoustic-gravity Waves in the Earth's Atmosphere. I - the General Nature of Acoustic-gravity Waves. II - Acoustic- Gravity Wave Ducting in the Atmosphere by Vertical Temperature Structure
Nature, propagation, and ducting of acoustic gravity waves in earths atmosphere
WAVE PROPAGATION↗
NES/ETS-1 duct structural dynamics. NERVA PROGRAM
Structural dynamics analysis of nuclear exhaust system duct for Nerva engine test stand
ROCKET TEST STATION↗
Vapor removal from engine duct in orbital environment.
Vapor replacement in propellant feed duct with subcooled liquid to meet engine starting requirement of space vehicle parked in orbit
SPACECRAFT CONTROL↗
Observations of conjugate ducting by the fixed- frequency topside-sounder satellite.
Conjugate ducting observation via fixed frequency topside-sounder satellite, estimating electron concentration difference
MAGNETOSPHERIC INSTABILITY↗
Monte Carlo solutions of molecular flow through cylindrical ducts.
Free and near-free molecular flow via cylindrical ducts using Monte Carlo method and high speed digital computer
CHANNEL FLOW↗
Calculation of the attenuation of low- frequency sound waves in straight lined ducts
Calculating low frequency sound wave attenuation in straight lined ducts
Filippova, R. D.↗
Study of minimum pressure loss in high velocity duct systems Quarterly report
Bellows configurations design, pressure loss, and vibration tests to minimize pressure drop and improve gas and liquid flow in spacecraft high velocity duct systems
Gerlach, C. P.↗
Wind-tunnel investigation of lateral aerodynamic characteristics of a powered four-duct-propeller VTOL model in transition
Wind tunnel study of lateral and directional aerodynamic characteristics of powered four-duct propeller VTOL scale model in transition
Spreemann, K. P.↗
Full scale turbofan duct burner test program Final report, 29 Jun. 1965 - 30 Jun. 1967
Performance, and structural durability of full scale turbofan duct burner at simulated supersonic transport flight
Clapp, C. J.↗
Zero Leakage Design for Ducts and Tube Connections for Deep Space Travel. Volume 2 - Connector Concept Studies Final Report, 5 Jul. 1963 - 30 Jun. 1967
Joining techniques for zero leakage ducts and tube connections
Gitzendanner, L. G.↗
Attenuation of sound in soft walled circular ducts
Linearized wave equation with associated boundary conditions for predicting sound attenuation in soft walled circular ducts
Rice, E. J.↗
Magnetospheric properties deduced from OGO 1 observations of ducted and nonducted whistlers.
Magnetospheric ionization distribution determined by ducted and nonducted whistler propagation modes and reflection as observed by OGO 1
Angerami, J. J.↗
Acoustic-gravity wave ducting in the atmosphere by vertical temperature structure.
Pfeffer matrix method for calculating wave propagation in nonisothermal atmospheres, noting acoustic gravity wave ducting in atmosphere by vertical temperature structure
Gille, J. C.↗