Author: United States. National Aeronautics and Space AdministrationPublisher:
ISBN:
Category :
Languages : en
Pages :
Book Description
SIGNAL-INDUCED NOISE EFFECTS IN A PHOTON COUNTING SYSTEM FOR STRATOSPHERIC OZONE MEASUREMENT... NASA/TM-1998-207674... AUG. 6, 1998
Author: United States. National Aeronautics and Space AdministrationPublisher:
ISBN:
Category :
Languages : en
Pages :
Book Description
Signal-Induced Noise Effects in a Photon Counting System for Stratospheric Ozone Measurement
Author: National Aeronautics and Space Adm NasaPublisher: Independently Published
ISBN: 9781792784026
Category : Science
Languages : en
Pages : 30
Book Description
A significant source of error in making atmospheric differential absorption lidar ozone measurements is the saturation of the photomultiplier tube by the strong, near field light return. Some time after the near field light signal is gone, the photomultiplier tube gate is opened and a noise signal, called signal-induced noise, is observed. Research reported here gives experimental results from measurement of photomultiplier signal-induced noise. Results show that signal-induced noise has several decaying exponential signals, suggesting that electrons are slowly emitted from different surfaces internal to the photomultiplier tube. Harper, David B. and DeYoung, Russell J. Langley Research Center NASA/TM-1998-207674, L-17739, NAS 1.15:207674 RTOP 622-65-34-70...
Signal-Induced Noise Effects in a Photon Counting System for Stratospheric Ozone Measurement
Author: David B. HarperA COMPARISON OF SIGNAL ENHANCEMENT METHODS FOR EXTRACTING TONAL ACOUSTIC SIGNALS... NASA/TM-1998-208426... AUG. 6, 1998
Author: United States. National Aeronautics and Space AdministrationPublisher:
ISBN:
Category :
Languages : en
Pages :
Book Description
Simulator Study of Stall/post-stall Characteristics of a Fighter Airplane with Relaxed Longitudinal Static Stability
Author: A Parametric Study of the Aerodynamic Characteristics of Nose-cylinder-flare Bodies at a Mach Number of 6.0
Author: George C. AshbyPublisher:
ISBN:
Category : Aerodynamics, Hypersonic
Languages : en
Pages : 82
Book Description
Studies of Airframe-propulsion-system Integration for Mach 6 Cruise Vehicles
Author: Publisher:
ISBN:
Category : Aerodynamics, Hypersonic
Languages : en
Pages : 26
Book Description
Summary of Flight-test Results of the VZ-2 Tilt-wing Aircraft
Author: Robert J. PeggPublisher:
ISBN:
Category : Aerodynamics
Languages : en
Pages : 48
Book Description
Buckling of a Pressurized Toroidal Ring Under Uniform External Loading
Author: George E. WeeksPublisher:
ISBN:
Category : Buckling (Mechanics)
Languages : en
Pages : 28
Book Description
Investigation of Engine-exhaust-airframe Interference on a Cruise Vehicle at Mach 6
Author: James M. CubbagePublisher:
ISBN:
Category : Aircraft exhaust emissions
Languages : en
Pages : 76
Book Description
Results from an investigation of the effects of underexpanded engine exhaust flow on the aerodynamic performance and stability of a cruise airplane at Mach 6 are presented. The influence of wing reflex angle and nozzle geometry on exhaust flow interference effects was investigated on a flat-plate model. The experiments were conducted at a free-stream Reynolds number of 17.05 X 10 (to the 6 power) based on the length of the airplane model over a model angle-of-attack range of 0(degrees) to 10(degrees) and at nozzle static-pressure ratios from 1 to approximately 4.