Ditching Investigation of a 1/18-Scale Model of the North American B-45 Airplane

An investigation of a 1/18-scale dynamically similar model of the North American B-45 airplane was made to observe the ditching behavior and determine the proper landing technique to be used in an emergency water landing. Various conditions of damage were simulated to determine the behavior which probably would occur in a full-scale ditching. The behavior of the model was determined from high-speed motion-picture records, time-history acceleration records, and visual observations. It was concluded that the airplane should be ditched at the maximum nose-high attitude with the landing flaps full down for minimum landing speed. During the ditching, the nose-wheel and bomb-bay doors probably will be torn away and the rear of the fuselage flooded. A violent dive will very likely occur. Longitudinal decelerations of approximately 5g and vertical accelerations of approximately -6g (including gravity) will be experienced near the pilots' compartment. Ditching braces installed in the bomb bay will tend to improve the behavior slightly but will be torn away along with the bomb-bay doors. A hydroflap installed ahead of the nose-wheel doors will eliminate the dive and failure of the nose-wheel doors, and substantially reduce the motions and accelerations

Trends in the Use of Extrinsic Aids in Statutory Interpretation

As evidenced by the increasing numbers of court decisions which involve statutes,\u27 and by the large and continually growing literature in the field, the subject of statutory interpretation is one of the most important in modern law. Although it is a field in which exact rules of automatic application can very seldom be formulated, only recently a member of the Supreme Court pointed out the great need for a set of consistently accepted principles of interpretation. Since the primary purpose of all statutory interpretation is to ascertain the meaning and to effectuate the purposes of the legislature, and since words are merely symbols without inherent meaning, every statute upon which a court is required to rule must, in some sense, be construed and interpreted

Trends in the Use of Extrinsic Aids in Statutory Interpretation

As evidenced by the increasing numbers of court decisions which involve statutes,\u27 and by the large and continually growing literature in the field, the subject of statutory interpretation is one of the most important in modern law. Although it is a field in which exact rules of automatic application can very seldom be formulated, only recently a member of the Supreme Court pointed out the great need for a set of consistently accepted principles of interpretation. Since the primary purpose of all statutory interpretation is to ascertain the meaning and to effectuate the purposes of the legislature, and since words are merely symbols without inherent meaning, every statute upon which a court is required to rule must, in some sense, be construed and interpreted

Knock-Limited Performance of Triptane and 28-R Fuel Blends as Affected by Changes in Compression Ratio and in Engine Operating Variables

A knock-limited performance investigation was conducted on blends of triptane and 28-P fuel with a 12-cylinder, V-type, liquid-cooled aircraft engine of 1710-cubic-inch displacement at three compression ratios: 6.65, 7.93, and 9.68. At each compression ratio, the effect of changes in temperature of the inlet air to the auxiliary-stage supercharger and in fuel-air ratio were investigated at engine speeds of 2280 and. 3000 rpm. The results show that knock-limited engine performance, as improved by the use of triptane, allowed operation at both take-off and cruising power at a compression ratio of 9.68. At an inlet-air temperature of 60 deg F, an engine speed of 3000 rpm ; and a fuel-air ratio of 0,095 (approximately take-off conditions), a knock-limited engine output of 1500 brake horsepower was possible with 100-percent 28-R fuel at a compression ratio of 6.65; 20-percent triptane was required for the same power output at a compression ratio of 7.93, and 75 percent at a compression ratio of 9.68 allowed an output of 1480 brake horsepower. Knock-limited power output was more sensitive to changes in fuel-air ratio as the engine speed was increased from 2280 to 3000 rpm, as the compression ratio is raised from 6.65 to 9.68, or as the inlet-air temperature is raised from 0 deg to 120 deg F

Age-Related Differences in Vehicle Control and Eye Movement Patterns at Intersections: Older and Middle-Aged Drivers

Older drivers are at increased risk of intersection crashes. Previous work found that older drivers execute less frequent glances for detecting potential threats at intersections than middle-aged drivers. Yet, earlier work has also shown that an active training program doubled the frequency of these glances among older drivers, suggesting that these effects are not necessarily due to age-related functional declines. In light of findings, the current study sought to explore the ability of older drivers to coordinate their head and eye movements while simultaneously steering the vehicle as well as their glance behavior at intersections. In a driving simulator, older (M = 76 yrs) and middle-aged (M = 58 yrs) drivers completed different driving tasks: (1) travelling straight on a highway while scanning for peripheral information (a visual search task) and (2) navigating intersections with areas potential hazard. The results replicate that the older drivers did not execute glances for potential threats to the sides when turning at intersections as frequently as the middle-aged drivers. Furthermore, the results demonstrate costs of performing two concurrent tasks, highway driving and visual search task on the side displays: the older drivers performed more poorly on the visual search task and needed to correct their steering positions more compared to the middle-aged counterparts. The findings are consistent with the predictions and discussed in terms of a decoupling hypothesis, providing an account for the effects of the active training program

Outpatient Commitment: A Competency Based Justification

A recent survey of state statutes for outpatient commitment (Torrey and Kaplan, 1995) indicates that while thirty-five states and the District of Columbia have laws permitting outpatient commitment, Massachusetts is not one of them. Rather, Massachusetts uses a competency-based, substituted-decision-making model for the involuntary administration of medication in the community. To appreciate the Massachusetts model, it is important to understand how this court-ordered involuntary outpatient treatment fits into the overall scheme of outpatient commitment and how it is structured. A review of involuntary outpatient treatment (IOT) literature indicates that it is prudent to distinguish between outpatient commitment, conditional release, and conservatorship-guardianship (Torrey and Kaplan, 1995). Two states whose IOT is based on the guardianship process and is described in the literature are California and New Mexico. Lamb and Weinberger (1992, 1993) have discussed California’s use of guardians for the gravely disabled psychiatric outpatient, and Schneider-Braus (1986) has presented a single case report from New Mexico