Bartack stitched pneumatic deicer boots
The present disclosure provides for pneumatic deicer boot assemblies, and related methods of fabrication and use. More particularly, the present disclosure provides for bartack stitched pneumatic deicer boot assemblies for aircraft or the like, with the bartack stitched pneumatic deicer boot assemblies having an inflatable carcass formed by two layers (e.g., a stretchable layer and a non-stretchable layer) stitched together using bartack stitches.
1. A pneumatic deicer boot assembly comprising:
fabric layers consisting of:
a stretchable layer formed of a stretchable fabric; and
a non-stretchable layer formed of a non-stretchable fabric,
wherein the stretchable layer and the non-stretchable layer are stitched together by stitches consisting of bartack stitches,
wherein:
each one of the bartack stitches is defined by a zig-zag stitch A and a straight stitch line B within the zig-zig stitch; and
wherein the bartack stitches are stitched in a pattern consisting of a parallel line pattern, such that the bartack stitches define airflow spacings between adjacent ones of the bartack stitches;
wherein:
the stretchable layer is configured to expand from a deflated position to an inflated position via introduction of air to the airflow spacings to create expanded air tubes, wherein the expanded air tubes, end to end, have a same cross-sectional shape as each other and extend parallel with each other,
each one of the expanded air tubes is positioned between adjacent ones of the bartack stitches and between the stretchable layer and the non-stretchable layer.
2. The assembly of claim 1 , wherein the non-stretchable layer is mounted with respect to a protected surface layer of an aircraft.
3. The assembly of claim 2 , wherein the protected surface layer is a wing surface or a stabilizer surface of the aircraft.
4. The assembly of claim 1 , further comprising a natural rubber layer positioned on the stretchable fabric, and a weathering surface layer positioned on the natural rubber layer.
5. The assembly of claim 4 , wherein the weathering surface layer is configured and dimensioned to allow an ice layer to accumulate thereon.
6. The assembly of claim 1 , further comprising an installation rubber layer positioned on a protected surface layer of an aircraft, with the non-stretchable fabric positioned on the installation rubber layer.
7. The assembly of claim 1 , wherein each one of the bartack stitches includes stitch ends that are reinforced.
8. The assembly of claim 1 , wherein the stretchable layer in the inflated position breaks-up ice on an ice layer positioned relative to the stretchable layer.
9. A method for fabricating a pneumatic deicer boot comprising:
providing fabric layers consisting of a stretchable layer formed of a stretchable fabric and a non-stretchable layer formed of a non-stretchable fabric,
stitching the stretchable layer and the non-stretchable layer together by stitches consisting of bartack stitches,
wherein:
each one of the bartack stitches is defined by a zig-zag stitch A and a straight stitch line B within the zig-zig stitch; and
the bartack stitches are stitched in a pattern consisting of a parallel line pattern, such that bartack stitches define airflow spacings between adjacent ones of the bartack stitches; and
introducing air to the airflow spacings to expand the stretchable layer from a deflated position to an inflated position to create a plurality of expanded air tubes, wherein the expanded air tubes, end to end, have a same cross-sectional shape as each other and extend parallel with each other,
each one of the expanded air tubes is positioned between adjacent ones of the bartack stitches and between the stretchable layer and the non-stretchable layer.
10. The method of claim 9 , wherein the non-stretchable layer is mounted with respect to a protected surface layer of an aircraft.
11. The method of claim 10 , wherein the protected surface layer is a wing surface or a stabilizer surface of the aircraft.
12. The method of claim 9 , further comprising a natural rubber layer positioned on the stretchable fabric, and a weathering surface layer positioned on the natural rubber layer.
13. The method of claim 12 , wherein the weathering surface layer is configured and dimensioned to allow an ice layer to accumulate thereon.
14. The method of claim 9 , further comprising an installation rubber layer positioned on a protected surface layer of an aircraft, with the non-stretchable fabric positioned on the installation rubber layer.
15. The method of claim 9 , wherein each one of the bartack stitches includes stitch ends that are reinforced.
16. The method of claim 9 , wherein the stretchable layer in the inflated position breaks-up ice on an ice layer positioned relative to the stretchable layer.