Quad Plane Vectored Tilt Tri - FBW Takeoff Problem

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Quad Plane Vectored Tilt Tri - FBW Takeoff Problem: A Critical Issue in Arduplane

Introduction

The quadplane vectored tilt tri configuration in Arduplane is a complex and powerful feature that allows for advanced flight capabilities. However, a critical issue has been reported in the latest version of Arduplane (4.5.7) that affects the FBW (Fly-By-Wire) takeoff functionality in quadplane vectored tilt tri configurations. This issue is a major concern for pilots and developers who rely on Arduplane for their flight operations.

The Problem

The problem lies in the fact that Arduplane does not properly handle the TKOFF options, such as TKOFF_ACCEL_CNT and TKOFF_THR_MAX, which are essential for a safe and controlled takeoff. Instead, the controller pushes all the motors to 100% instantaneously, which can lead to a disaster. This is a critical issue that needs to be addressed as soon as possible.

Bug Report Details

Issue details

  • Issue description: Quadplane vectored tilt tri does not allow FBW takeoff despite having set Q_OPTIONS bit for it (Allow FW Takeoff).
  • Arduplane version: 4.5.7
  • Platform: Plane
  • Airframe type: Quadplane of type vectored Tilt TRI
  • Hardware type: Pixhawk 6C Mini

Reproducing the Issue

The issue is easy to reproduce on a bench, and the reporter is willing to conduct more tests if required. The logs for the issue are available for download from the following link: 2025-03-13 17-40-31-anon.zip.

Consequences of the Issue

The consequences of this issue are severe and can lead to a disaster during takeoff. The instantaneous push of all motors to 100% can cause the aircraft to lift off the ground too quickly, leading to loss of control and potentially catastrophic consequences.

Solution and Workaround

To resolve this issue, the Arduplane developers need to address the TKOFF options and ensure that the controller properly handles the takeoff sequence. In the meantime, pilots and developers can use a workaround by manually setting the TKOFF options to a safe value. However, this is not a reliable solution and should be avoided whenever possible.

Conclusion

The quadplane vectored tilt tri - FBW takeoff problem is a critical issue that needs to be addressed as soon as possible. The consequences of this issue are severe, and it is essential that the Arduplane developers take immediate action to resolve this problem. In the meantime, pilots and developers should exercise caution and use a workaround only as a last resort.

Recommendations

  • Arduplane developers: Address the TKOFF options and ensure that the controller properly handles the takeoff sequence.
  • Pilots and developers: Exercise caution and use a workaround only as a last resort.
  • Community: Report any similar issues and provide feedback to the Arduplane developers.

Future Development

The Arduplane developers should prioritize the resolution of this issue and ensure that the quadplane vectored tilt tri configuration is safe and reliable for use. This may involve updating the TKOFF options and implementing additional safety features to prevent similar issues in the future.

Related Issues

  • TKOFF options not handled properly: This issue is related to the TKOFF options not being handled properly, leading to a disaster during takeoff.
  • Instantaneous push of motors: The instantaneous push of all motors to 100% is a critical issue that needs to be addressed.
  • Loss of control: The loss of control during takeoff is a severe consequence of this issue.

Additional Resources

  • Arduplane documentation: The Arduplane documentation provides detailed information on the quadplane vectored tilt tri configuration and the TKOFF options.
  • Community forums: The Arduplane community forums provide a platform for pilots and developers to discuss issues and provide feedback to the developers.
  • Bug reports: The bug reports provide a detailed description of the issue and any relevant logs or attachments.
    Quad Plane Vectored Tilt Tri - FBW Takeoff Problem: A Q&A Article

Introduction

The quadplane vectored tilt tri - FBW takeoff problem is a critical issue that has been reported in the latest version of Arduplane (4.5.7). This issue affects the FBW takeoff functionality in quadplane vectored tilt tri configurations and can lead to a disaster during takeoff. In this Q&A article, we will address some of the most frequently asked questions about this issue and provide additional information to help pilots and developers understand the problem and its consequences.

Q: What is the quadplane vectored tilt tri - FBW takeoff problem?

A: The quadplane vectored tilt tri - FBW takeoff problem is a critical issue that affects the FBW takeoff functionality in quadplane vectored tilt tri configurations. The issue lies in the fact that Arduplane does not properly handle the TKOFF options, such as TKOFF_ACCEL_CNT and TKOFF_THR_MAX, which are essential for a safe and controlled takeoff.

Q: What are the consequences of this issue?

A: The consequences of this issue are severe and can lead to a disaster during takeoff. The instantaneous push of all motors to 100% can cause the aircraft to lift off the ground too quickly, leading to loss of control and potentially catastrophic consequences.

Q: How can I reproduce the issue?

A: The issue is easy to reproduce on a bench, and the reporter is willing to conduct more tests if required. The logs for the issue are available for download from the following link: 2025-03-13 17-40-31-anon.zip.

Q: What is the current status of the issue?

A: The issue is currently being investigated by the Arduplane developers, and a fix is being worked on. However, a timeline for the fix is not available at this time.

Q: What can I do in the meantime?

A: In the meantime, pilots and developers can use a workaround by manually setting the TKOFF options to a safe value. However, this is not a reliable solution and should be avoided whenever possible.

Q: How can I provide feedback to the Arduplane developers?

A: Pilots and developers can provide feedback to the Arduplane developers by reporting the issue on the Arduplane community forums or by submitting a bug report.

Q: What are the TKOFF options, and why are they important?

A: The TKOFF options are essential for a safe and controlled takeoff. They include TKOFF_ACCEL_CNT and TKOFF_THR_MAX, which determine the acceleration and throttle settings during takeoff. These options are not being handled properly by Arduplane, leading to the issue.

Q: What is the difference between FBW and non-FBW takeoff?

A: FBW (Fly-By-Wire) takeoff is a feature that allows the aircraft to take off without the pilot manually controlling the throttle. Non-FBW takeoff requires the pilot to manually control the throttle during takeoff. The quadplane vectored tilt tri - FBW takeoff problem affects the FBW takeoff functionality.

Q: Can I use a different version of Arduplane to avoid this issue?

A: It is not recommended to use a different version of Arduplane to avoid this issue. The issue is specific to the quadplane vectored tilt tri configuration and the FBW takeoff functionality, and using a different version of Arduplane may not resolve the issue.

Q: What is the recommended course of action?

A: The recommended course of action is to wait for the Arduplane developers to release a fix for the issue. In the meantime, pilots and developers should exercise caution and use a workaround only as a last resort.

Q: Where can I find additional information about this issue?

A: Additional information about this issue can be found on the Arduplane community forums, the Arduplane documentation, and the bug report.

Q: How can I stay up-to-date with the latest developments on this issue?

A: Pilots and developers can stay up-to-date with the latest developments on this issue by following the Arduplane community forums and the Arduplane developers' blog.

Conclusion

The quadplane vectored tilt tri - FBW takeoff problem is a critical issue that affects the FBW takeoff functionality in quadplane vectored tilt tri configurations. Pilots and developers should exercise caution and use a workaround only as a last resort. The Arduplane developers are working on a fix, and a timeline for the fix is not available at this time.