Evaluation of Flying Qualities and Guidance Displays for an Advanced Tilt-wing STOL Transport Aircraft in Final Approach and Landing

Frost, Chad; Franklin, James A.; Hardy, Gordon H.; Grumman, Northrop

doi:10.2514/6.2002-6016

Cited by 4 publications

(1 citation statement)

References 4 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The Flying-V is a new prototype, and the criteria (such as the MIL-STD) designed for standard aircraft might not be suitable for the evaluation of its handling qualities. On this topic, some attempts have been made to link the most commonly used criteria to the handling qualities of a flying wing (e.g., Ehlers [18], or Humphreys-Jennings, Lappas and Mihai Sovar [19]), and more in general to specialize the criteria on the evaluation of handling qualities in final approach and landing (e.g., Frost, Franklin, and Hardy [20], Stoliker [21], Field and Rossitto [22]).…”

Section: Piloted Simulation Evaluation Of Handling Qualitiesmentioning

confidence: 99%

Piloted Simulator Evaluation of Low-Speed Handling Qualities of the Flying-V

Torelli

Stroosma

Vos

et al. 2023

AIAA SCITECH 2023 Forum

View full text Add to dashboard Cite

The Flying-V novel aircraft design aims at reducing fuel consumption by an innovative low-drag, fuselage-free geometry. Possible issues related to certification requirements have been noted, however, regarding longitudinal handling qualities at low speed, the pull-up manoeuver, and the flight-path-angle response. This study aims at investigating these issues through a pilot-in-theloop experiment. Starting with a mathematical model of the Flying-V, based on the vortex lattice method, a preliminary off-line analysis of the handling qualities is conducted. A sensitivity analysis is considered over the proposed operational center-of-gravity range, approach speed (between 0.225 and 0.3 Mach, 149 and 198 knots indicated airspeed, respectively), maximum deflection of the control surfaces (between 20 and 30 degrees), and flight control system (Direct Law or Pitch-Rate Command). The pilot-in-the-loop experiment, its design guided by results from the analytical assessment, shows that the handling qualities provided by the current design of the Flying-V with Direct Law at 0.3 Mach are satisfactory with minor improvements related to aircraft responsiveness. For lower speeds (0.225 Mach), the handling qualities degrade due to a sluggish response, high compensation workload, insufficient control authority, insufficient sight angle, and tendency to pilot induced oscillations. Shifting the center of gravity away from the nose provides larger control authority at the expense of a minor reduction of responsiveness. Control augmentation proves to be very effective at improving the handling qualities. It is expected that the go-around certification standards will be satisfied, but approach speed will remain critical for controllability and safety.

show abstract

Section: Piloted Simulation Evaluation Of Handling Qualitiesmentioning

confidence: 99%

Piloted Simulator Evaluation of Low-Speed Handling Qualities of the Flying-V

Torelli

Stroosma

Vos

et al. 2023

AIAA SCITECH 2023 Forum

View full text Add to dashboard Cite

show abstract

Mission Control Concept for Parcel Delivery Operations Based on a Tiltwing Aircraft System

Schütt

Hartmann

Holsten

et al. 2017

Advances in Aerospace Guidance, Navigation and Control

View full text Add to dashboard Cite

Rotorcraft Research at the NASA Vertical Motion Simulator

Aponso

Tran²,

Schroeder³

2009

AIAA Atmospheric Flight Mechanics Conference

View full text Add to dashboard Cite

In the 1970's the role of the military helicopter evolved to encompass more demanding missions including low-level napof-the-earth flight and operation in severely degraded visual environments. The Vertical Motion Simulator (VMS) at the NASA Ames Research Center was built to provide a high-fidelity simulation capability to research new rotorcraft concepts and technologies that could satisfy these mission requirements. The VMS combines a high-fidelity large amplitude motion system with an adaptable simulation environment including interchangeable and configurable cockpits. In almost 30 years of operation, rotorcraft research on the VMS has contributed significantly to the knowledgebase on rotorcraft performance, handling qualities, flight control, and guidance and displays. These contributions have directly benefited current rotorcraft programs and flight safety. The high fidelity motion system in the VMS was also used to research simulation fidelity. This research provided a fundamental understanding of pilot cueing modalities and their effect on simulation fidelity.

show abstract

Evaluation of Flying Qualities and Guidance Displays for an Advanced Tilt-wing STOL Transport Aircraft in Final Approach and Landing

Cited by 4 publications

References 4 publications

Piloted Simulator Evaluation of Low-Speed Handling Qualities of the Flying-V

Piloted Simulator Evaluation of Low-Speed Handling Qualities of the Flying-V

Mission Control Concept for Parcel Delivery Operations Based on a Tiltwing Aircraft System

Rotorcraft Research at the NASA Vertical Motion Simulator

Contact Info

Product

Resources

About