Self-separating and detaching protective cover for airspeed tube
A technology of pitot tube and protective sleeve, which is applied in speed/acceleration/shock measurement, detailed information of speed/acceleration/electric shock meter, measuring device, etc. It can solve problems such as easy failure of fixture, short service life, ablation, etc.
Pending Publication Date: 2018-12-28
CHENGDU KAITIAN ELECTRONICS
View PDF6 Cites 4 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
The disadvantage is: the pipe sleeve is kept on the pitot tube by friction force. Due to long-term use, the sleeve mouth is enlarged due to wear, and the ribbon is long, which is easy to fall off in windy weather.
The disadvantages are: easy to damage, short service life; not resistant to high temperature, it will be ablated after being heated by the pitot tube, and leave residue on the surface of the pitot tube, which may block the drain hole; the clamp is easy to fail, causing the pitot sleeve Dropped, and the clamp is a metal object, it will wear the trailing edge of the pitot tube
The disadvantage is: the material absorbs water and is easy to stick to sand
Once you forget to take it off, it may damage the pitot tube and even affect flight safety
[0004] The protective sleeves used in the pitot tubes disclosed in the prior art do not have the function of automatically falling off
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 moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0013] refer to Figure 1-Figure 3 . In the embodiment described below, a pitot tube self-separating fall-off protective sleeve during use includes: a protective sleeve body on which the pitot tube is put, and the pitot tube protective sleeve body is made of a The right semicircle sleeve 1 and the left semicircle sleeve 3 of the ear piece, and the hot melt adhesive 5 filled between the two semicircle sleeves, the two semicircle sleeves pass through the hot melt adhesive 5 Bonded into a protective cover that completely covers the entire pitot tube. When the pitot tube is heated, the temperature rises to melt the hot melt adhesive 5 and lose its cohesive force. The right mass 2, the left mass 4 and the protective cover are heated Under the action, it relies on its own gravity to separate and fall off. Wherein, the right mass block 2 is fixedly connected to the right circular body sleeve 1 , and the left mass block 4 is fixedly connected to the left circular body sleeve 3 . Th...
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
Login to View More Abstract
A self-separating and detaching protective cover for an airspeed tube disclosed by the invention aims to provide a protective cover for an airspeed tube, which is safe and reliable and can be automatically detached during use. The invention is achieved by the following technical solution: the protective cover body is composed of a right semi-circular sleeve formed with a hanging lug, a left semi-circular sleeve, and a hot melt glue filled between the two semi-circular sleeves; and the two semi-circular sleeves are bonded by the hot melt glue to form a protective cover completely covering the entire airspeed tube. When the airspeed tube is heated, the temperature rises to make the hot melt glue be melted and lose the cohesive force, so that the protective cover is separated and detached under the gravity of the mass and the protective cover itself. The self-separating and detaching protective cover for the airspeed tube solves the problem of the dangerous situation that the airspeed tube is unable to work in the air caused by easy forgetting of the removal of the protective cover of the airspeed tube under the conditions in the prior art, and the problem of blockage damage of the airspeed tube activated by burning the protective cover of the airspeed tube at high temperature when the ground is energized.
Description
technical field [0001] The invention relates to a protective cover used for an aircraft electric heating pitot tube. Background technique [0002] The airspeed tube is used by the aircraft to collect the total pressure and static pressure during flight, and transmit it to the air data computer, barometric altimeter, airspeed meter and other on-board equipment to calculate the atmospheric parameters such as indicated airspeed, barometric altitude, and ascending and descending speed. important device. Due to ice accumulation in pitot tubes and static pressure holes, some important driving instruments such as airspeed gauge, barometric altimeter, angle of attack indicator, M number indicator, and vertical speedometer will be distorted, or even completely invalid, so that the automatic system will provide error information. Make the pilot lose the basis for judging the flight status. Therefore, many flight accidents are caused by pitot tube problems. Once the pitot tube is bl...
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
Login to View More Patent Type & Authority Applications(China)
IPC IPC(8): G01P1/02
CPCG01P1/02
Inventor 周游朱世民谢波杨蕾玉
Owner CHENGDU KAITIAN ELECTRONICS