Author: Gene J. Matranga
Publisher:
ISBN:
Category :
Languages : en
Pages : 56
Book Description
Analysis of X-15 Landing Approach and Flare Characteristics Determined from the First 30 Flights
Analysis of X-15 Landing Approach and Flare Characteristics Determined from the First 30 Flights
Author: GENE J. MATRANGA
Publisher:
ISBN:
Category :
Languages : en
Pages : 1
Book Description
The approach and flare maneuvers for the first 30 flights of the X-15 airplane and the various control problems encountered are discussed. Depending on configuration, the peak lift-drag ratios from flight varied from 3.5 to 4.5 as compared with a predicted range of from 3.0 to 4.2. By employing overhead, spiral-type patterns beginning at altitudes as high as 40,000 ft, the pilots were consistently able to touch down within about + or - 1,000 ft of a designated point. A typical flare was initiated at a comfortable altitude of about 800 ft and an indicated airspeed of approximately 300 knots, which allowed a margin of excess speed. The flap and gear were extended when the flare was essentially completed, and an average touchdown was accomplished at a speed of about 185 knots indicated airspeed, an angle of attack of about 7 degrees and a rate of descent of about 4 fps. In general, the approach and landing characteristics were predicted with good accuracy in extensive preflight simulations. F-104 airplanes which simulated the X-15 landing characteristics were particularly valuable for pilot training. (Author).
Publisher:
ISBN:
Category :
Languages : en
Pages : 1
Book Description
The approach and flare maneuvers for the first 30 flights of the X-15 airplane and the various control problems encountered are discussed. Depending on configuration, the peak lift-drag ratios from flight varied from 3.5 to 4.5 as compared with a predicted range of from 3.0 to 4.2. By employing overhead, spiral-type patterns beginning at altitudes as high as 40,000 ft, the pilots were consistently able to touch down within about + or - 1,000 ft of a designated point. A typical flare was initiated at a comfortable altitude of about 800 ft and an indicated airspeed of approximately 300 knots, which allowed a margin of excess speed. The flap and gear were extended when the flare was essentially completed, and an average touchdown was accomplished at a speed of about 185 knots indicated airspeed, an angle of attack of about 7 degrees and a rate of descent of about 4 fps. In general, the approach and landing characteristics were predicted with good accuracy in extensive preflight simulations. F-104 airplanes which simulated the X-15 landing characteristics were particularly valuable for pilot training. (Author).
NASA Technical Note
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 440
Book Description
Publisher:
ISBN:
Category :
Languages : en
Pages : 440
Book Description
Index to NASA Technical Publications
Author: United States. National Aeronautics and Space Administration
Publisher:
ISBN:
Category :
Languages : en
Pages :
Book Description
Publisher:
ISBN:
Category :
Languages : en
Pages :
Book Description
A Selected Listing of NASA Scientific and Technical Reports for ...
Author:
Publisher:
ISBN:
Category : Aeronautics
Languages : en
Pages : 450
Book Description
Publisher:
ISBN:
Category : Aeronautics
Languages : en
Pages : 450
Book Description
Optimization of Lifting Re-entry Vehicles
Author: Wilbur Leason Hankey
Publisher:
ISBN:
Category : Drag (Aerodynamics)
Languages : en
Pages : 98
Book Description
Aerodynamic lift is used during re-entry to provide range maneuverability so that a precise site can be selected and a horizontal landing capability can be provided. Maximum maneuverability may be achieved by modulating the hypersonic lift-to drag ratio (L/D). In this study the lifting re entry configuration was optimized to maximize hypersonic L/D within the heating, stability, and landing constraints. Eleven pertinent constraint equations were formulated, and numerical calcula tions of the complete aerodynamic characteristics and configurational geometry were determined. The IBM 7090 computer was used to solve the 11 constraint equations through an iteration tech nique and to perform the maximization process. Optimum configurational geometries were evaluated for three wing loadings at vehicle weights of 10,000 and 100,000 pounds. Results show that higher L/D values can be achieved with low aspect ratio, low wing loadings, and large scale vehi cles. The complete geometry for one of the typical optimums is shown as an example.
Publisher:
ISBN:
Category : Drag (Aerodynamics)
Languages : en
Pages : 98
Book Description
Aerodynamic lift is used during re-entry to provide range maneuverability so that a precise site can be selected and a horizontal landing capability can be provided. Maximum maneuverability may be achieved by modulating the hypersonic lift-to drag ratio (L/D). In this study the lifting re entry configuration was optimized to maximize hypersonic L/D within the heating, stability, and landing constraints. Eleven pertinent constraint equations were formulated, and numerical calcula tions of the complete aerodynamic characteristics and configurational geometry were determined. The IBM 7090 computer was used to solve the 11 constraint equations through an iteration tech nique and to perform the maximization process. Optimum configurational geometries were evaluated for three wing loadings at vehicle weights of 10,000 and 100,000 pounds. Results show that higher L/D values can be achieved with low aspect ratio, low wing loadings, and large scale vehi cles. The complete geometry for one of the typical optimums is shown as an example.
Index of NASA Technical Publications
Author: United States. National Aeronautics and Space Administration
Publisher:
ISBN:
Category : Aeronautics
Languages : en
Pages : 448
Book Description
Publisher:
ISBN:
Category : Aeronautics
Languages : en
Pages : 448
Book Description
X-15
Author: Dennis R. Jenkins
Publisher:
ISBN:
Category : Science
Languages : en
Pages : 712
Book Description
1. A new science / 2. A hypersonic research airplane / 3. Conflict and innovation / 4. The million-horsepower engine / 5. High range and dry lakes / 6. Preparations / 7. The flight program / 8. The research program.
Publisher:
ISBN:
Category : Science
Languages : en
Pages : 712
Book Description
1. A new science / 2. A hypersonic research airplane / 3. Conflict and innovation / 4. The million-horsepower engine / 5. High range and dry lakes / 6. Preparations / 7. The flight program / 8. The research program.
Applied Mechanics Reviews
Author:
Publisher:
ISBN:
Category : Mechanics, Applied
Languages : en
Pages : 1116
Book Description
Publisher:
ISBN:
Category : Mechanics, Applied
Languages : en
Pages : 1116
Book Description
Robust Control of Linear Systems Subject to Uncertain Time-Varying Parameters
Author: Francesco Amato
Publisher: Springer Science & Business Media
ISBN: 3540239502
Category : Technology & Engineering
Languages : en
Pages : 202
Book Description
Publisher: Springer Science & Business Media
ISBN: 3540239502
Category : Technology & Engineering
Languages : en
Pages : 202
Book Description