VENTING PATTERN
SBDG / CONCEPTUAL OVERVIEWIllustrative shell; finished face and end details unconfirmed
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A closer look at the surface

Venting
Pattern

From the roll
to the report.

Suction. Blind drilling. Grooving.
One connected pattern.

01 / The 1.406-inch window

01 / Find the Pattern

One window.
A complete pattern.

Across the roll, a repeating arrangement defines the relationship between every hole.

Pattern
102–19–5
Axial window
1.406 in

Nominal example geometry.
Not an analyzed field photograph.

02 /

Suction Drilling

The larger holes pass through the illustrated cover. Their repeating centers establish the base pattern.

Hole diameter
.152 in
Holes per window
19

Suction surfaces highlighted

03 /

Blind Drilling

Two shifted families sit between the suction holes. The blind cavities stop within the cover.

Hole diameter
.087 in
Nominal depth
.320 in

Blind surfaces highlighted

Flat drill ends are an illustration convention.

04 /

Grooving

Grooves per inch
8
Width / depth
.030 / .125 in
Land width
.095 in
A
B
C
1
2
3

A / B / C and 1 / 2 / 3: edge-to-edge clearances.
Four-start illustration: .500 in/revolution.

05 / Analyzation

From a photo.
To the Venting Pattern.

ID markers establish the reference.
The Hybrid Circumferential Arc Scale follows the roll.

Capture. Measure. Verify.
Illustrative Analyzer view; no live capture.

06 / Bring it together

From a surface
to a specification.

The same window, dimensions and groove inputs become an organized report.

Illustrative output only.
No field analysis or report submission occurs.

VENTING PATTERNILLUSTRATIVE REPORT

SBDG / 102–19–5

EXAMPLE ILLUSTRATION-001

Plan view of the same illustrative SBDG window

Pattern information

Indexes / holes / lines
102 / 19 / 5
Window spacing
1.406 in
Roll outside diameter
49.910 in
Suction / blind diameter
.152 / .087 in

Calculated open area

Suction
Groove component
Total

Grooving / user-supplied variant

Grooves per inch
8
Width / depth / land
.030 / .125 / .095 in

Nominal geometry + illustrative assumptions.
Not an as-built record or manufacturing approval.

FIELD SUPPORT / REPLENISHMENT

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01

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