Hello Xavier
Well Done with your research and your link.
Give your self a pat on the back for me.
I have been searching everywhere all I found was this Site of a bewildering array of WW2 Radio transmitters etc...
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http://www.dxzone.com/cgi-bin/dir/jump2.cgi?ID=14295
with no luck.
The site you found is fantastic as it confirms long range communication was still by Morse code.
Now going back to the Tropical conversion zone, the Dakota has a service ceiling of over 23000 feet. In the 1940's there was little knowledge of the phenomenon of Jetstream and Hadley cells.
Jet streams are fast flowing, narrow air currents found in the atmospheres of some planets. The main jet streams are located near the tropopause, the transition between the troposphere (where temperature decreases with height) and the stratosphere (where temperature increases with height).
The major jet streams on Earth are westerly winds (flowing west to east). Their paths typically have a meandering shape; jet streams may start, stop, split into two or more parts, combine into one stream, or flow in various directions including the opposite direction of most of the jet. The strongest jet streams are the polar jets, at around 7?12 km (23,000?39,000 ft) above sea level, and the higher and somewhat weaker subtropical jets at around 10?16 km (33,000?52,000 ft).
The northern hemisphere and the southern hemisphere each have both a polar jet and a subtropical jet. The northern hemisphere polar jet flows over the middle to northern latitudes of North America, Europe, and Asia and their intervening oceans, while the southern hemisphere polar jet mostly circles Antarctica all year round.
Jet streams are caused by a combination of a planet's rotation on its axis and atmospheric heating (by solar radiation and, on some planets other than Earth, internal heat). The Coriolis effect describes how a planet's surface and atmosphere rotate fastest relative to each other at the planet's equator while virtually not rotating at all at the poles.
While this speed difference generally has very little effect on a planet's surface, it plays an important role in atmospheric air currents because air at higher levels of the atmosphere, especially near the equator, must travel very fast to keep up with the planet's rotation. Thus there is a tendency for air at higher levels of the atmosphere to "slip" and fall behind the speed of the air below.
This results in a pressure buildup behind the "slipped" air, and so some air will have to catch up by moving in the same general direction as the planet's rotation (west to east on Earth); however, this air does not follow a simple pattern but instead is also influenced by its temperature and water content compared to that of surrounding air regions. In essence, instead of the atmosphere moving along with the planet consistently, parts of the atmosphere travel faster than others via jet streams.
Jet streams form near boundaries of adjacent air masses with significant differences in temperature, such as the polar region and the warmer air towards the equator.
Meteorologists use the location of some of the jet streams as an aid in weather forecasting. The main commercial relevance of the jet streams is in air travel, as flight time can be dramatically affected by either flying with the flow or against the flow of a jet stream. Clear-air turbulence, a potential hazard to aircraft, often is found in a jet stream's vicinity.
A second factor which contributes to jet sharpness is more appropriate for the subtropical jet, which forms at the poleward limit of the tropical Hadley cell. The subtropical jet forms at the poleward limit of the tropical Hadley cell and to first order this circulation is symmetric with respect to longitude.
Tropical air rises to the tropopause, mainly because of thunderstorm systems in the
intertropical convergence zone, and moves poleward before sinking; this is the Hadley circulation. As it does so it tends to conserve angular momentum, since friction is slight above the ground. In the northern hemisphere motions are deflected to the right by the Coriolis force, which for poleward (northward) moving air implies an increased eastward component of the winds. Around 30 degrees from the equator the jet wind speeds have become strong enough that were the jet to extend further polewards the increased winds speed would be unstable..
Both Aircraft flew in a critical month June when temperatures change and wind directions of intertropical convergence zone cold air and hot air collide. An aircraft entering a Hadley cell could hit a severe up draft on one side and a catastrophic down draft on the other. Hadley cell can be a few kilometers wide. So the pilot may of corrected the updraft and lowered the altitude of the aircraft only to hit a violent downdraft on the other side of the cell with Catastrophic results. Strange enough there has been several cases of modern Boeing aircraft casualties to this phenomenon.
This could be a possible explanation of what happened in 1946 and in 1951?
If we look at two possibilities if the aircraft went over sea. They were not sighted by personnel at cape Palmer And the extra fuel consumption to weight ratio as it is more of an indirect route.
If the Aircraft tried to fly over the storm cell and a 30 degree crosswind in a more direct route over and over the Putu range then it could be possible that the aircraft hit that mountain range in a rain storm and severe down draft?
Just a theory but the location of crash sites are still a proverbial needle in a haystack in such a jungle clad location.
Hardluck.
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http://www.thunting.com/smf/index.php/topic,10242.msg100656.html#msg100656
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