IP Library Granted Patent US 9,828,113
Granted Patent B2
US 9,828,113 · App. 14/072,732 · Granted Nov 28, 2017

Tailstrike warning system

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Quick Facts
Patent No.
US 9,828,113
App. No.
14/072,732
Granted
Nov 28, 2017
Kind
B2
Abstract

An aircraft tailstrike warning method includes identifying a first value representing an aircraft angle of attack, identifying a second value representing a maximum aircraft angle of attack, identifying a difference between the first value and the second value, and providing a tailstrike warning when the difference between the first value and the second value is less than a threshold amount.

Claims (6)

1. An aircraft tailstrike warning method comprising:

identifying an aircraft angle of attack,

identifying a maximum aircraft angle of attack,

determining a dynamic limit of aircraft proximity to tailstrike based on the aircraft angle of attack and the maximum aircraft angle of attack, and

displaying the dynamic limit as a distance from a reference point multiplied by a scale factor, the scale factor selected such that the dynamic limit is not displayed when the aircraft is at a predetermined angle of attack for takeoff or approach at a first reference airspeed.

2. The method of claim 1 , wherein the scale factor is selected such that the dynamic limit is not displayed when the aircraft is at the predetermined angle of attack for takeoff.

Assignments (3)
SECURITY INTEREST Recorded Feb 11, 2021
From: SAFE FLIGHT INSTRUMENT, LLC
To: FIRST EAGLE PRIVATE CREDIT, LLC (F/K/A NEWSTAR FINANCIAL, INC.)
Reel/Frame 055231/0691 →
MERGER AND CHANGE OF NAME Recorded Feb 11, 2021
From: SAFE FLIGHT INSTRUMENT CORPORATION, INC.; SF INSTRUMENT, LLC
To: SAFE FLIGHT INSTRUMENT, LLC
Reel/Frame 055233/0253 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Apr 17, 2014
From: GREENE, RANDALL A.; BEYER, SHAWN P.
To: SAFE FLIGHT INSTRUMENT CORPORATION
Reel/Frame 032703/0363 →