DIFFERENTIAL PRESSURE MEASUREMENTS IN SENSING SIDESLIP AND ANGLE OF ATTACK

1965 ◽  
pp. 1-22
Author(s):  
B. ROGAL
Keyword(s):  
Angle Of Attack ◽  
Differential Pressure ◽  
Pressure Measurements

Bi-stability of micro-plates: A sensitive mechanism for differential pressure measurements

2017 ◽  
Vol 111 (12) ◽  
pp. 124101 ◽  
Author(s):  
Banafsheh Sajadi ◽  
Johannes (Hans) Goosen ◽  
Fred van Keulen
Keyword(s):  
Differential Pressure ◽  
Pressure Measurements ◽  
Micro Plates

Pressure Measurements Around a Rotating Cylinder With and Without Crossflow

1993 ◽  
Vol 115 (3) ◽  
pp. 526-528 ◽  
Author(s):  
A. A. Tawfek ◽  
B. V. S. S. S. Prasad ◽  
A. K. Mohanty
Keyword(s):  
Pressure Transducer ◽  
Static Pressure ◽  
Rotating Cylinder ◽  
Differential Pressure ◽  
Pressure Measurements ◽  
Orthogonal Axis ◽  
Differential Pressure Transducer ◽  
Slip Ring

Static pressure measurements around a cylinder rotating about an orthogonal axis with and without superimposed crossflow are carried out by using a capacitance type differential pressure transducer in conjunction with a slip-ring apparatus. A coefficient of pressure (Cp) is defined for the rotating cylinder and typical variations of Cp along its length and periphery are presented.

Steady and Unsteady Surface Pressure Distributions Around Rectangular Prisms With Sharp Edges at Reynolds Number Up to 2.5×106

2006 ◽  
Author(s):  
Annick D’Auteuil ◽  
Guy L. Larose
Keyword(s):  
Reynolds Number ◽  
Turbulent Flow ◽  
Surface Pressure ◽  
Angle Of Attack ◽  
Pressure Measurements ◽  
Oncoming Flow ◽  
Pressure Distributions ◽  
Unsteady Surface Pressure ◽  
Sharp Edges ◽  
Flow Reattachment

The commonly-held assumption that the aerodynamics of rectangular prisms with sharp edges are insensitive to Reynolds number is shown to have limitations. Flow reattachment on the top and/or bottom of the prisms can be related to Reynolds number, Re. Steady and unsteady surface pressure measurements were carried out on nine different rectangular prisms for Re from 0.3×106 to 2.5×106 at several angles of attack, in smooth and turbulent flow. It was observed that the reattachment was dependent on parameters such as fineness ratio, edge treatment, angle of attack, turbulence of the oncoming flow and Reynolds number. Permanent reattachment occurred for prisms with fineness ratio of 4 and fluctuating reattachment took place for rectangular prisms with fineness ratio as low as 2.

scholarly journals Bioinspired wind field estimation—part 1: Angle of attack measurements through surface pressure distribution

2018 ◽  
Vol 10 (3) ◽  
pp. 273-284 ◽  
Author(s):  
Nikola Gavrilovic ◽  
Murat Bronz ◽  
Jean-Marc Moschetta ◽  
Emmanuel Benard
Keyword(s):  
Angle Of Attack ◽  
Time Estimation ◽  
Pressure Measurements ◽  
Surface Pressure Distribution ◽  
Additional Equipment ◽  
Field Estimation ◽  
Aerial Vehicle ◽  
Unsteady Interaction ◽  
Wind Vane ◽  
Local Angle

One of the major challenges of Mini-Unmanned Aerial Vehicle flight is the unsteady interaction with turbulent environment while flying in lower levels of atmospheric boundary layer. Following inspiration from nature we expose a new system for angle of attack estimation based on pressure measurements on the wing. Such an equipment can be used for real-time estimation of the angle of attack during flight or even further building of wind velocity vector with additional equipment. Those information can find purpose in control and stabilization of the aircraft due to inequalities seen by the wing or even for various soaring strategies that rely on active control for energy extraction. In that purpose, flying wing aircraft has been used with totally four span-wise locations for local angle of attack estimation. In-flight angle of attack estimation from differential pressure measurements on the wing has been compared with magnetic sensor with wind vane. The results have shown that pressure ports give more reliable estimation of angle of attack when compared to values given by wind vane attached to a specially designed air-boom. Difference in local angle of attack at four span-wise locations has confirmed spatial variation of turbulence in low altitude flight. Moreover, theoretical law of energy dissipation for wind components described by Kaimal spectrum has shown acceptable match with estimated ones.

Estimation of bubble parameters from differential pressure measurements in gas-fluidized beds

1996 ◽  
Vol 87 (2) ◽  
pp. 113-126 ◽  
Author(s):  
A. Venkata Ramayya ◽  
S.P. Venkateshan ◽  
Ajit Kumar Kolar
Keyword(s):  
Fluidized Beds ◽  
Differential Pressure ◽  
Pressure Measurements ◽  
Gas Fluidized Beds
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