Karman-Trefftz

Name: Karman-Trefftz
Author: Aracro Products LLC

LiveAracro Products LLC3 apps · 742 installsToolsFreecom.aracro.python.KarmanTrefftz

Generates and evaluates airfoils using the Karman-Trefftz transform

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Total installs: 127
Installs / day: 0
Rating: —★
Released: 9 Feb 2019
Last update: 9 Feb 2019
Countries: —

Installs per day

gain of the exact counter

12 Oct 2026No change in the counterOur first day-to-day reading of the counter. The line starts with the next one.

Daily tracking since 11 Oct 2026 · history grows every day

Install history

exact counter from Google Play

1dAll

Dashed: estimate from the release date (no daily data before 11 Oct 2026) · time axis compressed before that day

Daily tracking since 11 Oct 2026 · history grows every day

Change timeline

Full history

No changes recorded yet. We compare every crawl with the previous one and list title, icon, screenshots, description, version, price and availability changes here.

Country availability

Availability has not been checked for this app yet. “Check all countries” looks the app up in about 140 Google Play storefronts and shows where it is live, listed but not installable, or missing — plus any country-specific (custom) store listings.

Top countries

Country data will be available soon.

We estimate where downloads come from using the app’s position in Google Play’s top charts in about 140 countries. This app is not in any chart we have collected yet; the estimate appears as soon as it is.

Top chart positions

Not in any tracked top chart.

App manifest

Read this app's manifest from Google Play: permissions, declared SDKs, components and AdMob app ID. Saved analysis appears here automatically.

Data safety

declared by the developer on Google Play

No data shared with third parties
No data collected

This is the developer's own declaration, summarised from the Play listing. The permissions below show what the app is technically able to access.

Permissions

4 in 2 groups

4 Sensitive0 Notable0 Routine

What this app can do with your phone

Read photos, videos, and other files saved in your phone's shared storage
Add, change or delete photos, videos and other files in your phone's storage

Photos/Media/FilesSensitive2

Access to photos, videos, music and other files stored on your device

Read photos, videos, and other files saved in your phone's shared storageread the contents of your USB storage · READ_EXTERNAL_STORAGE
Add, change or delete photos, videos and other files in your phone's storagemodify or delete the contents of your USB storage · WRITE_EXTERNAL_STORAGE

StorageSensitive2

Access to files, photos and media saved on your phone's storage

Read photos, videos, and other files saved in your phone's shared storageread the contents of your USB storage · READ_EXTERNAL_STORAGE
Add, change or delete photos, videos and other files in your phone's storagemodify or delete the contents of your USB storage · WRITE_EXTERNAL_STORAGE

Read more · all 4 permissions Show less

Sensitive = can reach personal data, location, camera/mic or act on your behalf. Notable = changes how your device behaves. Routine = normal for almost every app. Source: Google Play's permission list for all versions of this app.

Store listing

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Full description

This app uses conformal mapping to calculate the shape and inviscid, incompressible, 2-d velocity and pressure distribution around Karman-Trefftz family airfoils. This app is a more developed, python based version of our previous Karman-Trefftz app. We have chosen to release it as a new, separate app to reflect the significant restructuring it underwent. Planned expansion includes inverse design and generalized 2-d panel codes allowing for analysis of any parameterized 2-d shape.

What's new

The new version of this app now produces contour and quiver plots of pressure and velocity. It is now partially Python based to avoid the awkward graphing libraries in standard Java. There is currently one known bug due to a roots of unity problem in the inverse transform when the airfoil is very extremely cambered. We are sorry for the inconvenience, and are developing a numerical inverse transform method to fix this issue.

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