Author: Paul A. Baker
Publisher:
ISBN:
Category : Aerodynamics
Languages : en
Pages : 52
Book Description
A constant-angle-of-attack-approach technique was used to measure ground effect on several low -aspect-ratio aircraft. The flight results were compared with results from constant -altitude flybys, wind-tunnel studies, and theoretical prediction data. It was found that the constantangle-of-attack technique provided data that were consistent with data obtained from constant-altitude flybys and required fewer runs to obtain the same amount of data. The test results from an F5D-1 airplane modified with an ogee wing, a prototype F5D-1 airplane, two XB-70 airplanes, and an F-104A airplane indicate that theory and wind-tunnel results adequately predict the trends caused by ground effect as a function of height and aspect ratio. However, the magnitude of these predictions did not always agree with the flightmeasured results. In addition, there was consistent evidence that the aircraft encountered ground effect at a height above one wing span.
Flight Evaluation of Ground Effect on Several Low-aspect-ratio Airplanes
Author: Paul A. Baker
Publisher:
ISBN:
Category : Aerodynamics
Languages : en
Pages : 52
Book Description
A constant-angle-of-attack-approach technique was used to measure ground effect on several low -aspect-ratio aircraft. The flight results were compared with results from constant -altitude flybys, wind-tunnel studies, and theoretical prediction data. It was found that the constantangle-of-attack technique provided data that were consistent with data obtained from constant-altitude flybys and required fewer runs to obtain the same amount of data. The test results from an F5D-1 airplane modified with an ogee wing, a prototype F5D-1 airplane, two XB-70 airplanes, and an F-104A airplane indicate that theory and wind-tunnel results adequately predict the trends caused by ground effect as a function of height and aspect ratio. However, the magnitude of these predictions did not always agree with the flightmeasured results. In addition, there was consistent evidence that the aircraft encountered ground effect at a height above one wing span.
Publisher:
ISBN:
Category : Aerodynamics
Languages : en
Pages : 52
Book Description
A constant-angle-of-attack-approach technique was used to measure ground effect on several low -aspect-ratio aircraft. The flight results were compared with results from constant -altitude flybys, wind-tunnel studies, and theoretical prediction data. It was found that the constantangle-of-attack technique provided data that were consistent with data obtained from constant-altitude flybys and required fewer runs to obtain the same amount of data. The test results from an F5D-1 airplane modified with an ogee wing, a prototype F5D-1 airplane, two XB-70 airplanes, and an F-104A airplane indicate that theory and wind-tunnel results adequately predict the trends caused by ground effect as a function of height and aspect ratio. However, the magnitude of these predictions did not always agree with the flightmeasured results. In addition, there was consistent evidence that the aircraft encountered ground effect at a height above one wing span.
Flight Evaluation of Ground Effect on Several Low-aspect-ratio Airplanes
Author: Paul A. Baker
Publisher:
ISBN:
Category :
Languages : en
Pages : 46
Book Description
Publisher:
ISBN:
Category :
Languages : en
Pages : 46
Book Description
Flight-measured Ground Effect on a Low-aspect-ratio Ogee Wing Including a Comparison with Wind-tunnel Results
Author: L. Stewart Rolls
Publisher:
ISBN:
Category : Airplanes
Languages : en
Pages : 34
Book Description
Publisher:
ISBN:
Category : Airplanes
Languages : en
Pages : 34
Book Description
Ground Effects Related to Landing of Airplanes with Low-aspect-ratio Wings
Author: William B. Kemp
Publisher:
ISBN:
Category : Airplanes
Languages : en
Pages : 18
Book Description
Publisher:
ISBN:
Category : Airplanes
Languages : en
Pages : 18
Book Description
An In-flight Investigation of Ground Effect on a Forward-swept Wing Airplane
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 22
Book Description
Publisher:
ISBN:
Category :
Languages : en
Pages : 22
Book Description
Measurements of Ground Effect on a Low-aspect-ratio Ogee-wing Airplane Model and Calculations of Landing-flare Trajectories
Author: Vernard E. Lockwood
Publisher:
ISBN:
Category : Airplanes
Languages : en
Pages : 42
Book Description
Publisher:
ISBN:
Category : Airplanes
Languages : en
Pages : 42
Book Description
Dynamic Ground Effects Flight Test of an F-15 Aircraft
Author: Stephen Corda
Publisher:
ISBN:
Category : Aerodynamics
Languages : en
Pages : 32
Book Description
Publisher:
ISBN:
Category : Aerodynamics
Languages : en
Pages : 32
Book Description
A Piloted Simulator Investigation of Ground Effect on the Landing Maneuver of a Large, Tailless, Delta-wing Airplane
Author: C. Thomas Snyder
Publisher:
ISBN:
Category : Airplanes
Languages : en
Pages : 60
Book Description
The influence of ground effect on the landing flare characteristics of a supersonic transport airplane (SST) was investigated in a fixed cockpit simulator. Simulations of an ogee-modified delta-wing F5D-1 airplane and a subsonic jet transport were used for evaluating the simulator and as a reference configurations during landing comparisons. Dynamic responses of the SST to seven different ground-effect models during controls-fixed and constant-attitude descents are also presented, followed by piloted subjective assessments. A summary of ground effects on delta-like wings is included in the appendixes.
Publisher:
ISBN:
Category : Airplanes
Languages : en
Pages : 60
Book Description
The influence of ground effect on the landing flare characteristics of a supersonic transport airplane (SST) was investigated in a fixed cockpit simulator. Simulations of an ogee-modified delta-wing F5D-1 airplane and a subsonic jet transport were used for evaluating the simulator and as a reference configurations during landing comparisons. Dynamic responses of the SST to seven different ground-effect models during controls-fixed and constant-attitude descents are also presented, followed by piloted subjective assessments. A summary of ground effects on delta-like wings is included in the appendixes.
NASA Technical Note
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 542
Book Description
Publisher:
ISBN:
Category :
Languages : en
Pages : 542
Book Description
Dynamic Ground Effect for a Cranked Arrow Wing Airplane
Author: Robert E. Curry
Publisher:
ISBN:
Category : Airplanes
Languages : en
Pages : 22
Book Description
Publisher:
ISBN:
Category : Airplanes
Languages : en
Pages : 22
Book Description