The Military and “Mob Rule”: The CEF Riots in Calgary, February 1916

During the First World War, unruly and ill-disciplined Canadian soldiers, on “assorted ’patriotic’ pretexts,” damaged local property and battled with local police forces in Victoria, Calgary, Winnipeg, Toronto, Campbellton, New Brunswick, and other Canadian centres. The riots in Calgary in February 1916 involved members of Canadian Expeditionary Force (CEF) battalions encamped near the city. While historians have focused on the anti-German nature of the attacks, several other considerations must be examined to explain the unlawful behaviour. Although a court of inquiry into the riot failed to conclude who was responsible, the contemporary evidence suggests strongly that soldiers, rather than civilians, started the disturbances. But what conditions allowed such behaviour to occur? The military context of the time offers insight. Recruitment, training and discipline were all factors, as was the nearness of the soldiers’ camp to Calgary. The military, however, denied responsibility, arguing that the culprits were “civilians” in uniform. By refusing to compensate the owners of local establishments for the damages caused during the riots, local and national military authorities made worse a problem they should have prevented

Tommy Prince: Warrior

Over the last decade, there has been a flurry of interest in the Aboriginal men and women who served in the world wars and Korea. No one is more famous than Sergeant Thomas George Prince, MM (1919–77), one of the most decorated non-commissioned officers in Canadian military history. Yet he remains, to most Canadians, an unknown figure

Conceiving and Executing Operation Gauntlet: The Canadian-Led Raid on Spitzbergen, 1941

In August and September 1941, Canadian Brigadier Arthur Potts led a successful but little known combined operation by a small task force of Canadian, British, and Norwegian troops in the Spitzbergen (Svalbard) archipelago in the Arctic Ocean. After extensive planning and political conversations between Allied civil and military authorities, the operation was re-scaled so that a small, mixed task force would destroy mining and communications infrastructure on this remote cluster of islands, repatriate Russian miners and their families to Russia, and evacuate Norwegian residents to Britain. While a modest non-combat mission, Operation Gauntlet represented Canada’s first expeditionary operation in the Arctic, yielding general lessons about the value of specialized training and representation from appropriate functional trades, unity of command, operational secrecy, and deception, ultimately providing a boost to Canadian morale. Interactions also demonstrated the complexities of coalition warfare as well as the challenges associated with civil-military interaction in the theatre of operations

Symmetry causes a huge conductance peak in double quantum dots

We predict a huge interference effect contributing to the conductance through large ultra-clean quantum dots of chaotic shape. When a double-dot structure is made such that the dots are the mirror-image of each other, constructive interference can make a tunnel barrier located on the symmetry axis effectively transparent. We show (via theoretical analysis and numerical simulation) that this effect can be orders of magnitude larger than the well-known universal conductance fluctuations and weak-localization (both less than a conductance quantum). A small magnetic field destroys the effect, massively reducing the double-dot conductance; thus a magnetic field detector is obtained, with a similar sensitivity to a SQUID, but requiring no superconductors.Comment: 5pages 3 figures and an appendix ONLY in arXiv versio

Aerodynamic effect of a honeycomb rotor tip shroud on a 50.8-centimeter-tip-diameter core turbine

A 50.8-cm-tip-diameter turbine equipped with a rotor tip shroud of hexagonal cell (or honeycomb) cross section has been tested in warm air (416 K) for a range of shroud coolant to primary flow rates. Test results were also obtained for the same turbine operated with a solid shroud for comparison. The results showed that the combined effect of the honeycomb shroud and the coolant flow was to cause a reduction of 2.8 points in efficiency at design speed, pressure ratio, and coolant flow rate. With the coolant system inactivated, the honeycomb shroud caused a decrease in efficiency of 2.3 points. These results and those obtained from a small reference turbine indicate that the dominant factor governing honeycomb tip shroud loss is the ratio of honeycomb depth to blade span. The loss results of the two shrouds could be correlated on this basis. The same honeycomb and coolant effects are expected to occur for the hot (2200 K) version of this turbine

Alien Registration- Whitney, Lillian P. (Auburn, Androscoggin County)

https://digitalmaine.com/alien_docs/30030/thumbnail.jp

Description of the warm core turbine facility recently installed at NASA Lewis Research Center

The two net facilities were installed and operated at their design, or rated conditions. The important feature of both of these facilities is that the ratio of turbine inlet temperature to coolant temperature encountered in high temperature engines can be duplicated at moderate turbine inlet temperature. The limits of the facilities with regard to maximum temperature, maximum pressure, maximum mass flow rate, turbine size, and dynamometer torque-speed characteristics are discussed

Performance of a high-work low aspect ration turbine tested with a realistic inlet radial temperature profile

Experimental results are presented for a 0.767 scale model of the first stage of a two-stage turbine designed for a high by-pass ratio engine. The turbine was tested with both uniform inlet conditions and with an inlet radial temperature profile simulating engine conditions. The inlet temperature profile was essentially mixed-out in the rotor. There was also substantial underturning of the exit flow at the mean diameter. Both of these effects were attributed to strong secondary flows in the rotor blading. There were no significant differences in the stage performance with either inlet condition when differences in tip clearance were considered. Performance was very close to design intent in both cases