Showing 4 items matching "wind drift"
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Frankston RSL Sub BranchCalculator, Course & Speed, E.R Watts & Son London Pty Ltd
... wind drift... course speed wind drift Inscribed "COURSE & SPEED CALCULATOR MKII ...Course and Speed calculator used as a navigational aid by Air Force pilots to calculate aircraft relative groundspeed whilst allowing for wind speed and direction. A similar example (MKIIA version) can be seen at the following Imperial War Museum web page: Inscribed "COURSE & SPEED CALCULATOR MKII", "E.R.WATTS & Son No 757/35", "A.M. REF No 6B/119".raaf, navigation, calculator, ww2, raf, aircraft, course, speed, wind drift -
Nhill Aviation Heritage CentreNavigation Computer
... and navigators for quick calculations of Air Speed and Wind Drift.... and navigators for quick calculations of Air Speed and Wind Drift. Indent ...This type of instrument typically used by pilots and navigators for quick calculations of Air Speed and Wind Drift.hand operated navigation computer. Rotating scale on the front panel and a scroll type scale on the inner panel with a winder knob on the right side. Front panel is hinged at the top and bottom has two curved thigh pads.Indent No. G6B/145 RAAF Serial No. WG/2967* I.C.A.N. in center of front dial COMPUTER NAVIGATIONAL Ml. III D. -
Frankston RSL Sub Branch
Drift Recorder, W & G, A M Drift Recorder MKII, 1930 - 1939
Purpose built mechanical calculation machine for determining the drift of aircraft when operating in crosswind conditions. This device has an eyepiece and a prismatic periscope for viewing a distant feature being tracked. This device has calibrated rotary scales for height, speed (in KNOTS and MPH), and an adjustment to preset the 'crab angle' of the aircaft for cross wind compensation. The device can be opened for cleaning or maintenance purposes. Refer to the following extracts for information about bomb drift: "Crosswinds brought into the bombing problem a new factor, "drift" In order to fly a given ground track in a crosswind, an aircraft had to "crab" into the wind; the angle formed between the aircraft's true heading and its ground track was called the "drift angle" In a crosswind, the bomb would impact directly behind the aircraft and along its longitudinal axis at the moment of release. But this meant that the bomb would strike the ground at some point downwind of the aircraft's ground track. Thus, in order to score a hit, the bomber had to fly a ground track that ran upwind of the target." "Air resistance acting on a bomb after release caused it to lag behind the drop point and hit somewhere behind the bomber. The distance from a point beneath the aircraft at the instant of bomb impact to the point of bomb impact was called "trail." Trail increased as the bomber's airspeed increased or as its altitude increased. Furthermore, since different bombs encountered different resistance in the air, trail was also a factor of bomb shape."A. M. Drift Recorder MKII REF. No 6B/190 No 2668/41 X/ 3606 3E4H28 -
Queenscliffe Maritime MuseumClothing - Belt decoration
She was nearing the end of her voyage, close inshore off Cape Otway at Curdies Inlet (now called Schomberg Reef), east of Peterborough and 150 miles westward of Melbourne. When the wind suddenly dropped the ship drifted onto an uncharted reef and became stuck fast. There was no loss of life ans all the passengers, crew and mails were taken off by a passing coastal steamer, the Queen, out of Port Fairy the following morning. The passengers' luggage and some of the cargo was rescued, but the weather worsened and work was abandoned and cargo littered the beach. The wreck was sold for salvage to local merchants: two were drowned in attempts to reach her. It became a popular wreck site for diving and over 100 relics have been handed in. The bell of the ship is in the Warrnambool Museum, southern Victoria. Relics at Flagstaff Hill Maritime Museum include a cannon, a communion set, a brass candlestick, and a diamond ring.A diamond shaped brass belt decorationschomberg, salvage, peterborough
