Browse Topic: Stall warning indicators

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Minimum Performance Standard Stall Warning EquipmentAS8014A (Current)12/22/2020
This Aerospace Standard covers two basic Stall Warning Systems, one measures air flow and pressure distribution on the airfoil and the other measures the angle of airflow with respect to an arbitrary reference line. Each type of system includes, as a minimum, a sensor and the means for activating a device which warns the pilot of an impending stall.
A-4 Aircraft Instruments Committee
Collins Aerospace provides avionics for C-130H modernization programSAE-MA-0000209/03/2019
The Lockheed C-130H Hercules fleet operated by the Air National Guard and U.S. Air Force Reserve is getting new Collins Aerospace Systems avionics that will help extend the life of the legacy aircraft by 20 years.
Kucinski, William
Real-Time Flight Envelope Monitoring SystemTBMG-1278202/01/2012
The objective of this effort was to show that real-time aircraft control-surface hinge-moment information could be used to provide a robust and reliable prediction of vehicle performance and control authority degradation. For a given airfoil section with a control surface — be it a wing with an aileron, rudder, or elevator — the control-surface hinge moment is sensitive to the aerodynamic characteristics of the section. As a result, changes in the aerodynamics of the section due to angle-of-attack or environmental effects such as icing, heavy rain, surface contaminants, bird strikes, or battle damage will affect the control surface hinge moment. These changes include both the magnitude of the hinge moment and its sign in a time-averaged sense, and the variation of the hinge moment with time. The current program attempts to take the real-time hinge moment information from the aircraft control surfaces and develop a system to predict aircraft envelope boundaries across a range of
STALL WARNING INSTRUMENTAS403A (Current)02/16/2008
A-4 Air Data Subcommittee
Stall Warning Instrument (Turbine Powered Subsonic Aircraft)AS439A (Current)02/16/2008
This standard covers stall warning instruments to provide positive warning to the pilot of an impending stall. Stall, as defined for the purpose of this standard, is the minimum steady flight speed at which the airplane is controllable.
A-4 Aircraft Instruments Committee
Stall Warning Using Contamination Detecting Aerodynamics92201010/01/1992
Aerodynamically monitoring the performance of an aircraft's lifting surface provides the missing component in stall warning. The missing component is the ability to measure the premature loss of lift due to contamination such as insect deposits, snow, slush, or ice on the lifting surface. Conventional stall warning systems, which use a fuselage mounted angle of attack sensor, do not measure the actual stalling condition at the wing. The key to determining an early stall due to the presence of contamination is to measure the flow directly at the lifting surface. Local velocity changes in a region above the upper surface of the wing provide a consistent indication of an approaching aerodynamic stall even when contamination is present. This method of stall warning also offers new levels of safety during low level windshear recovery and takeoff performance monitoring.
Catlin, Paul A.
STALL WARNING INSTRUMENT (Turbine Powered Subsonic Aircraft)AS439 (Historical)05/01/1991
This standard covers stall warning instruments to provide positive warning to the pilot of an impending stall. Stall, as defined for the purpose of this standard, is the minimum steady flight speed at which the airplane is controllable.
A-4 Aircraft Instruments Committee
MINIMUM PERFORMANCE STANDARD STALL WARNING EQUIPMENTAS8014 (Historical)09/08/1986
This Aerospace Standard covers two basic Stall Warning Systems, one measures air flow and pressure distribution on the airfoil and the other measures the angle of airflow with respect to an arbitrary reference line. Each type of system includes, as a minimum, a sensor and the means for activating a device which warns the pilot of an impending stall.
A-4 Aircraft Instruments Committee
An Improved Stall Warning System for General Aviation Aircraft72033102/01/1972
An improved stall warning system has been developed for general aviation aircraft. Existing stall warning systems are susceptible to false warning signals caused by rough or gusting air. These extraneous warning signals have been eliminated by adding a signal discriminator to the basic stall warning system. The design requires a low-cost, highly repeatable, time-delay module, capable of “zero timing” at each independent actuation of the stall sensor switch. The development of this device is described, and the service test results are discussed.
Donnelly, Thomas S.
REVIEW OF AIRCRAFT INSTRUMENT PROBLEMS60037301/01/1960
GEBHARDT, G. T.
COMPRESSOR STALL PROBLEMS IN GAS-TURBINE-TYPE AIRCRAFT ENGINES57002001/01/1957
This paper was presented at the SAE National Aeronautic Meeting, New York, April 12, 1956. STALL of axial-flow-type compressors limits the flexibility of operation of 1- and 2-spool aircraft turbojet engines. Complete compressor stall or surge is a problem with regard to engine acceleration as well as low-and high-Mach-number flight at high altitudes. Deterioration of compressor performance due to low Reynolds numbers at extreme altitudes aggravates the stall problem. Inlet-flow distortions increase the severity of this problem, particularly for supersonic flight. Rotating stall at low values of equivalent rotative speed is a serious source of blade vibrational failure. This latter problem is also aggravated by inlet-flow distortions.
Benser, William A., Finger, Harold B.
THE VECKERS' VISCOUNT ON TRANS-CANADA AIR LINES' ROUTES55005801/01/1955
DYMENT, J. T.
Accidents In Crop Control Flying50001401/01/1950
ASHMEAD, BEN W.
Review Of Air Transport Developments For The Year 194647016401/01/1947
KIRCHNER, O. E.
“This Is Your Program”46013201/01/1946
MORSE, A. L.
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