Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Methods and systems for determining airspeed of an aircraft

A technology of aircraft and airspeed, which is applied in satellite radio beacon positioning systems, devices for measuring the time required to move a certain distance, control/regulation systems, etc., can solve problems such as pollution and dirt, and achieve the elimination of external static port pollution Effect

Active Publication Date: 2019-07-12
THE BOEING CO
View PDF2 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Static ports mounted on the exterior of the aircraft can become fouled with various types of contamination during near-earth or ground-based operations of the aircraft, distorting airspeed measurements and affecting the safety and operation of the aircraft

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Methods and systems for determining airspeed of an aircraft
  • Methods and systems for determining airspeed of an aircraft
  • Methods and systems for determining airspeed of an aircraft

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0013] figure 1 is an exemplary schematic block diagram of aircraft 10 including a system for determining the airspeed of the aircraft, as described below. Aircraft 10 may be any aircraft, such as a fixed-wing aircraft, a rotary-wing aircraft, a propeller-driven aircraft, a jet aircraft, a commercial aircraft, a military aircraft, or another type of aircraft or any aircraft that may be a combination of different aircraft types (such as in figure 1 fixed-wing commercial aircraft depicted in the example of ). The aircraft 10 includes a GPS device 20 capable of determining the GPS altitude of the aircraft, an inertial reference device 21 capable of obtaining measurements used to determine the vertical acceleration of the aircraft, and may also include other devices 22 such as radio altimeters, pressure or barometric altimeters, external temperature sensor, external total pressure sensor, and other means for obtaining or measuring other data related to the flight of the aircraft)...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention provides methods and systems for determining airspeed of an aircraft. The methods and systems allow for calculation of airspeed in near-ground and on-ground aircraft operation. A GPS altitude and a vertical acceleration of the aircraft are obtained for a current time frame. A geometric altitude for the previous time frame is determined, and the difference between the GPS altitude andgeometric altitude are combined with the vertical acceleration to calculate a geometric altitude rate of change. The geometric altitude rate of change is used to calculate a pressure altitude rate ofchange, which is used to calculate a pressure altitude for the aircraft. A static pressure is calculated from the pressure altitude, and the airspeed is calculated using the static pressure.

Description

technical field [0001] The disclosed systems and methods relate to methods and systems for determining airspeed of an aircraft, and more particularly, to methods and systems for determining airspeed of an aircraft based on measurements of altitude and vertical acceleration of the aircraft. Background technique [0002] Accurate measurement of the airspeed of the aircraft is critical to the control of the aircraft, thereby affecting the system operation and safety of the aircraft during all flight phases. For example, airspeed can be directly determined using the total pressure measured from the pitot tube and the static pressure measured from a static port mounted on the aircraft fuselage or on the side of the pitot tube. Static ports, or other types of ports or piping, may occur when the aircraft is at high altitudes away from the ground, where static ports are generally reliably free of contamination (such as contamination or influence from ground effects, thrust reverser ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): G01P3/62G01P3/66
CPCG05D1/0094G05D13/00G01P3/62G01P3/66G01C5/005G01C5/06B64D43/02G01P5/16G01S19/13
Inventor J·罗
Owner THE BOEING CO
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com