scholarly journals The noise environment under low‐altitude, high‐speed military aircraft training routes

1989 ◽  
Vol 85 (S1) ◽  
pp. S45-S45
Author(s):  
Kenneth J. Plotkin ◽  
Alton Chavis
Keyword(s):  
High Speed ◽  
Military Aircraft ◽  
Noise Environment ◽  
Low Altitude

A Study and Review of Human Response to Prolonged Random Vibration

1966 ◽  
Vol 8 (6) ◽  
pp. 481-492 ◽  
Author(s):  
Richard J. Hornick ◽  
Norman M. Lefritz
Keyword(s):  
Spectral Density ◽  
High Speed ◽  
Random Vibration ◽  
Human Performance ◽  
Vibration Characteristic ◽  
Human Response ◽  
Human Capabilities ◽  
Power Spectral ◽  
Long Duration ◽  
Low Altitude

This article describes a study conducted to determine the effects of long duration, random vibration—characteristic of low-altitude high-speed (LAHS) flight aircraft—on human performance, physiological, biodynamic, and tolerance responses. Ten subjects experienced 0.10, 0.15, and 0.20 RMS g with a shaped power spectral density from 1 to 12 cps while engaging in LAHS control tasks. Simulation runs were of 5 hours duration, with the centermost 4 hours under dynamic conditions. Results of this experiment are related to those of other studies which had the same general objectives in order to provide a brief review and summary about what is known regarding human capabilities for LAHS flight.

The Feasibility of a Helmet-Mounted Sight as a Control Device

1966 ◽  
Vol 8 (5) ◽  
pp. 417-425 ◽  
Author(s):  
Robert M. Nicholson
Keyword(s):  
High Speed ◽  
Angular Rate ◽  
Control Device ◽  
Experimental Program ◽  
Moving Targets ◽  
Human Capabilities ◽  
Laboratory Environment ◽  
System A ◽  
Three Phase ◽  
Low Altitude

The purpose of this research was to investigate the practicality of a helmet-mounted sight as an operational element in a quick-reaction bore-sighting system. A three-phase experimental program was conducted to determine the human capabilities with the helmet-mounted sight. In a laboratory environment sighting accuracies were obtained on both static and moving targets. Field test data were obtained during high-speed, low-altitude flights. The series of tests indicated that the accuracy of the sighting process can be expected to vary between a fraction of a degree and four degrees depending on target angular rate and the target sighting angle.

Comment on "Low-Altitude, High-Speed Handling and Riding Qualities"

1964 ◽  
Vol 1 (4) ◽  
pp. 222-223 ◽  
Author(s):  
IRVING L. ASHKENAS
Keyword(s):  
High Speed ◽  
Low Altitude

Pilot and Observer Performance in Simulated Low Altitude High Speed Flight

1965 ◽  
Vol 7 (3) ◽  
pp. 257-265 ◽  
Author(s):  
Ben Schohan ◽  
Harve E. Rawson ◽  
Stanley M. Soliday
Keyword(s):  
Atmospheric Turbulence ◽  
High Speed ◽  
Target Identification ◽  
Observer Performance ◽  
Acceleration Time ◽  
Acceleration Time Histories ◽  
Time Histories ◽  
Low Altitude ◽  
Vertical Accelerations

Responses of experienced pilots and aerial observers were studied in simulated low-altitude, high-speed (LAHS) flight. The pilots “flew” three-hour surveillance missions at airspeeds of .4M and .9M in different degrees of simulated atmospheric turbulence. Flying ability decreased from .4 to .9M; however, intensity of vertical accelerations did not seem to affect flying ability except at the most severe levels. Target identification was unimpaired by either turbulence or airspeed. The observers also flew three-hour missions while experiencing acceleration time histories recorded from the pilot's flights. Target identification deteriorated as airspeed increased from 0.4 to 0.9 Mach. Gust intensity did not affect performance of any of their tasks. Performance efficiency on all tasks did not deteriorate from beginning to end of the missions of both pilots and observers.

Effects of piloting supersonic aircraft on plasma corticosteroids and bicarbonate

1959 ◽  
Vol 14 (4) ◽  
pp. 629-631 ◽  
Author(s):  
Henry B. Hale ◽  
James P. Ellis ◽  
Clyde H. Kratochvil
Keyword(s):  
High Speed ◽  
Military Aircraft ◽  
Supersonic Aircraft ◽  
Plasma Bicarbonate ◽  
Student Pilots ◽  
Aircraft Pilots

While flying high-speed military aircraft, pilots frequently hyperventilate to a degree sufficient to induce marked alkalosis. Psychogenic factors are thought to be responsible for the hyperventilation. Comparison was made of pre- and postflight plasma bicarbonate (determined titrimetrically) and corticosteroid levels (Sweat's technique) for 20 instructor pilots and 47 student pilots flying F-100 aircraft for 50 minutes. No differentiation of students and instructors was possible on the basis of either pre- or postflight values; therefore, the data for the two groups were combined. The plasma bicarbonate value following the flight was 1.1 ± .24 mEq/l. (mean ± S.E.) lower than before the flight. Free 17-hydroxycorticosterone was increased 5.8 ± .70 μg/100 ml, while conjugated 17-hydroxycorticosterone increased 5.7 ± .75. The free corticosterone-like fraction increased 3.1 ± .34 μg/100 ml, while the conjugated corticosterone-like fraction increased 3.2 ± .35. Each of these changes was significantly different from zero (P < .001). No statistically significant correlation was found between the fall in bicarbonate and any of the increases in steroid fractions.

scholarly journals Separation simulation studies of large disturbance and high speed at low altitude

2019 ◽  
Vol 1324 ◽  
pp. 012066
Author(s):  
Siyi Fan ◽  
Wanghua Fei ◽  
Pengfei Guo ◽  
Xuan Zhang ◽  
Geling Yin ◽  
...  
Keyword(s):  
High Speed ◽  
Simulation Studies ◽  
Low Altitude ◽  
Large Disturbance

Low-altitude IR terrain and sea model development for a high-speed imaging fuze

1999 ◽  
Author(s):  
Dennis L. Garbo ◽  
Dennis R. Crow ◽  
Charles F. Coker ◽  
Donald A. Cunard
Keyword(s):  
High Speed ◽  
Model Development ◽  
High Speed Imaging ◽  
Low Altitude
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