Junkers Ju -86 P Cutaway, short story the German recon plane very high altitudes, built starting bomber Ju -86 , this was built together as passenger jet with capacity for 10 seats in a narrow cabin uncomfortable and as a bomber , this had a small store of arms containing pumps vertically in a container species , had an unorthodox landing very narrow road, which was the cause of more than an accident, given its large which grew even more to reach 32 meters in the Ju -86 R version was defended for three machine gun positions one in front turret , one in dorsal position and the third in the bottom of the rear fuselage and the same down a small basket that held the gunner in a not sure if very vulnerable position , was used with the Condor Legion in the Spanish Civil War and the Luftwaffe early in the Second World War without much success in both cases , but some units were sold to the Air Force Swedish which also built under license (Today the only surviving copy in a Swedish museum are preserved) , Lufthansa was also a user of type as airliner.
German aviation was in need of a plane that was immune to interception and could bring back great pictures , to achieve the goal Junkers modified their bomber Ju- 86 by increasing the wingspan 25.60 meters. eliminating the turrets and the cellar of arms, this space was tapped to install two fuel tanks 1290 liters of additional diesel three type P- 2 cameras were also installed for recognition two were located together towards the stern and the other just after the old cellar of arms, further back in the fuselage a spherical tank of oxygen for the crew was installed , leaving only a crew of two pilot and navigator / radio operator , they share a small cabin pressurized new design, which replaced all the old bow of the Ju -86 , the same could be accessed with a long ladder entering hatch close circle , among other changes were followed using the diesel engine Junkers Jumo 207 a- 1 in a new nacelle with clean fairing with air intake but continued keeping them radiators in the original position but now more he flattened himself already fitted to the bomber but now overloaded with increased compressor to operate at high altitudes, this heavy and underpowered engine had the advantage of low power consumption of only 70 % of the petrol version BMW 132 Dc , which allowed a large range , the result was an excellent reconnaissance aircraft with a maximum operating ceiling of 13,800 mts ininterceptable they did , at this point its top speed increased to the 400 Km / h , with a cruising speed of only 240 km / h , to the frustration of RAF fighters , I operate it for several months without being disturbed or challenged until August 24, 1942 , when a Spitfire Mk - V was specifically modified to attempt to put down and stop the German reconnaissance operations in the theater of the Middle East , it was relieved of all that was necessary, equipped with oxygen its pilot took off and almost to the limit of your roof achievement intercept and down to 12,000 meters. the slow Ju -86 P2 on Cairo a few days later two more were shot down over Aboukir per share of British fighters , this ended reconnaissance missions in this theater .
Expanding on the comment about the diesel engine that powered this aircraft , it was a 6-cylinder two-stroke diesel and 12 pistons, no valves but had two crankshafts both transmitting power to a common axis, this move by the three-bladed propellers one end ( there were versions with propellers 4 blades that used the engine Junkers Jumo 207 B-3 much more powerful ) and on the other the centrifugal over- compressor had direct injection , compression is achieved when both pistons compressing air and just before achieve maximum compression the fuel is injected after the explosion gases out through openings in the walls of the cylinders after the power stroke to start the cycle again , their main advantage was its lowest consumption requiring only 70 liters of diesel fly 100 compared to 100 9-cylinder radial engine BMW 132 Dc it was just a little more powerful , Miles author Pilotpress modified by Motocar and uploaded to the topic with Flickr to recreate this special reconnaissance aircraft German high height of the Second World War.
Junkers Ju-86B cutaway
, first model of the bomber version of the aircraft that also functioned as pasjeros for lufthansa plane in its civil version Author A. Niabel
Edited by Motocar, 03 December 2013 - 21:43.