Determination of longitudinal and lateral directional aerodynamic characteristics of the B19B pressure-fed booster and the B19B booster/040A orbiter launch configuration

The 0.003366 scale models of the space shuttle pressure-fed booster and booster/orbiter configurations were tested in the MSFC 14-inch trisonic wind tunnel. The test was conducted as a static stability and control investigation over a Mach range of 0.60 to 5.00. The booster alone configuration was tested with various tail sizes, tail wedge angles, tail flaps, spoilers, and a body flare drag skirt. Two launch configurations were tested; one being the MSC orbiter location on the booster tank and the other being the North American Rockwell orbiter location. Orbiter buildup, longitudinal position, incidence angle, and booster tail on and off were the variables for launch configuration. Booster alone models were pitched over an angle of attack range of -4 to +14 and +20 to +60 deg at zero deg yaw angle and yawed over an angle of sideslip range of -10 to +10 deg at 52 deg angle of attack. Launch configuration models were yawed -10 to +10 deg at zero degrees angle of attack and yawed -10 to +10 deg at zero and -6 deg angle of attack. All models were rolled 45 deg during selected runs

Space shuttle: Verification of booster transition characteristics for transonic and supersonic Mach numbers (M equals 0.6 - 5.0)

The results of the booster verification wind tunnel test are presented. These tests were conducted in a 14 x 14-inch trisonic wind tunnel utilizing a .0035 scale model. The nominal Mach numbers tested were 0.6, 0.9, 0.95, 1.0, 1.05, 1.20, 1.50, 2.0, 2.74, 3.00, 4.50 and 5.0. The angle of attack range was +5 to 40 deg. The yaw data was obtained over a range of -10 to +10 deg at fixed angles of attack of 0, 6, 15, 25, and 30 deg. The Reynolds number range was 4.2 to 6.9 million per foot. Results include elevon and canard effectiveness in pitch, and rudder, aileron, body flap, and tail effectiveness in yaw

Private warehouse investment strategies in small versus large manufacturing firms

The research reported in this manuscript empirically compares the private warehouse investment strategies of small and large manufacturing firms. Mail surveys were administered to independent samples of small and large United States manufacturing firms. This research is based on a series of identically worded questions administered to both samples. Data was factor analyzed and cluster analyzed to identify three private warehouse investment strategies for small and large firms and two strategies for large firms. Analyses of three independent variables further evaluated differences in private warehouse investment strategies. Finally, the warehouse mix of small and of large firms was compared. This study identified specific private warehouse investment strategies, and warehouse mixes, in small and large United States manufacturing firms. Small firms were found to be less likely to use formal capital budgeting techniques and were less likely to consider strategic issues than large firms. Small firms were also found to be more likely to use private warehousing than large firms. This research increases the awareness of differences in logistics practice between small and large manufacturing firms and suggests that generalizations regarding logistics strategy should be approached with caution

A longitudial study of private warehouse investment strategies

This article revisits private warehouse investment decision making, a topic previously examined in 1989 by McGinnis, Kohn, and Myers (1990). Since then there has been a substantial amount of discussion regarding the scope and nature of logistics /supply chain management. In particular the roles of private, contract, and public warehousing has been discussed, increased emphasis on financial performance and strategic decision making may have altered the criteria for investment decisions in private warehousing, increased coordination of supply chains may have altered the relative importance of private, contract, and private warehousing, and increasing emphasis on controlling inventory investment may have shifted inventory responsibilities onto suppliers and customers. Empirical data was collected in 1999and 2008 regarding warehouse investment decisions in large United State manufacturing firms. This research focused on private warehouse investment decisions, topics that might affect those decisions, and the mix of private, contract, public, and other warehouse options. The results of the 1999 and 2008 data were compared to the earlier findings reported by McGinnis, Kohn, and Myers. Changes in private warehouse investment strategies, the roles of market /product mix uncertainties and availability of for-hire warehouse providers, and changes in warehouse mix were examined. Implications for practitioners, teachers, and researchers of transportation, supply chain management, logistics, and warehousing are discussed

Gender, Millennials, and leisure constraints: Exploring golf’s participation decline

This paper addresses the dearth of research regarding why the golf industry, specifically in the United States, is stagnating and, in some cases, losing participants. We focus on why Millennials are not playing golf to the same extent as previous generations. This is a conceptual paper, drawing upon literature in sports, leisure, gender, and marketing to track the current trends in sports participation, leisure, and household production to determine the constraints that might limit golf participation. In this paper, we highlight gender as an important social structure and conceptual lens for understanding social changes, particularly among Millennials, which could also contribute to the reductions in golf participation. We offer practical solutions for the golf industry to grow, especially among the Millennial audience. We suggest, among other actions, that golf should improve its appeal to the entire family

Sugar beets in Minnesota

12 pages; includes photographs. This archival publication may not reflect current scientific knowledge or recommendations. Current information available from the University of Minnesota Extension: https://www.extension.umn.edu