Description
Introducing HiFi’s first weather engine for the X-Plane platform……
Active Sky XP (ASXP) brings the popular award-winning Active Sky weather engine to the X-Plane platform for the first time. Using a hybrid weather depiction interface through X-Plane 11’s weather API, a realistic, high-performance and high-fidelity weather experience is realized.

Features Spotlight
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Active Air Effects
Replaces internal X-Plane turbulence and air effects, providing enhanced turbulence, drafts, thermals, terrain-based wind effects, surface friction, gusts, variability, wake turbulence, microbursts and more
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High-Performance Weather Depiction
Uses internal X-Plane 11.2x/11.3x cloud depiction for maximum performance and smoothness, with multiple weather depiction modes including theme cell “real weather” mode and global static mode – VR compatible and optimized!
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Active Sky Weather Engine
An evolved version of the Active Sky platform brings the core features that made Active Sky the leading weather engine for other platforms: Advanced weather synthesis and interpolation, high-resolution global winds aloft, realistic air and atmosphere effects, a comprehensive weather data network, integrated visual mapping and planning, and much, much more
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Voice Weather Delivery
Active Sky ATIS and Flightwatch are available at any time by listening on 122.00, 122.02 or 122.03 for closest station, actual/current interpolated conditions and destination weather reports, respectively
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Surface Crosswind Attenuation
Optional, for better ground handling in crosswind conditions while preserving headwind/tailwind component for performance accuracy
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Mobile Companion App
Use any device/browser to connect with Active Sky over your network and view and control the weather
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Features, specifications, requirements and pricing subject to change.

Limitations
Not a complete visual cloud rendering replacement
- We have put our previous X-Plane visual cloud rendering replacement efforts on hold (until next year) due to performance considerations and changing API environment/tools that are not yet finalized
- We expect our visual cloud rendering replacement technology to debut in Q4 2019, subject to change based on many factors
- ASXP features high-performance cloud depiction with a focus on conditions accuracy, utilizing the X-Plane internal cloud rendering via a hybrid API approach, with two different modes available
- ASXP also features an optional high-performance photo-realistic cloud texture replacement with a simple texture installation wizard
Windows 64-Bit (v7 or later) Only
- Mac, Linux and 32-bit X-Plane/Windows versions are not supported
- In a networked environment, the ASXP application/client may run on Windows 32-bit (7 or later), but X-Plane must be 64-bit on Windows 64-bit (7 or later)
- We hope to bring additional OS/platform support in the future
- X-Plane version 11.26 or later (64-bit for Windows) is required
Requirements
- X-Plane v11.26 or later, 64-bit Windows Version (Mac and 32-bit Windows versions are not compatible)
- Windows 7 or later, 64-bit Version
- Active and stable internet connection (broadband recommended)*
- 500mb available hard drive space
- 1 GHZ+ CPU
- 2 GB+ RAM
- OpenGL 3.3 graphics device (nVidia GTX500 or or equivalent, or better)
- 1024×768 minimum available screen resolution to display all user interface features
*Active Sky XP is an online product that will require the creation of a new user account. You must be logged in to use the software. One login per user account is permitted. You can install the software on multiple machines and/or move the software to other machines, but may be logged in only once at a time. Using Active Sky XP, creating a user account, and logging into the system require the acceptance of our Privacy Policy at https://hifisimtech.com/privacy-policy.
Resources
Changelog 10/18/19
- Fixed issue with surface layer/aloft layer inter-layer interpolation at airports approx 5000ft agl, and a related issue with airports over 3000ft agl
- Fixed issue with “Save manual changed” coming up when changing mode through http/API
- Changed max email address length in forgot password form to 64 vs 30 (was preventing resets for users with long email addresses)
- Clarified manual route entry popup form instructions (in Flight Plan) that Departure and Destination are expected in the route string
- Added hurricane wind speed to better represent variability based on eye and position from eye
- Fixed issue where some hurricanes may become “stuck” for several days at their last known position

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