whats the highest altitude its possible for a kite to be flown from sea level?

Answer 1

It depends, are you talking practically or theorectically?

If practical, you would only be able to reach as high as a kite can go using the formula

weight of kite+(positive)wind resistance>85% of Weight of rope+gravity
where the wind resistance is the wind holding the kite in the air. Now, using this formula you would be able to fixate that the higher you go, the stronger the winds thus the longer and heavier the rope.

taking all of the into account practically you can get it to soar around 4000 feet with the best availible to anyone (even military).

In theory, if we had some material that could defy gravity or some such, It would be able to reach as high as there is air to lift it. Because working with a kite, it can go as high just as long as there is a wind to lift it.

Answer 2

Temperature and Pressure, as previously mentioned, are done Via engine bleeds, and packs. this can get very complex on some airplanes: The A320 has 4 Bleeds, to Low Pressure, and 2 High pressure bleeds. The design is as such, to create a "Near constant" pressure. On the ground, the High Pressure engine bleeds open, they are located in the N2 (High pressure, secondary stage) Compressor, thus the air coming from them - is already highly pressurised, even with the engine at idle. Once the engine is spooled up - the High Pressure valves in the N2 stage are closed, and the Low Pressure bleed, located at the N1 Stage - is opened up. This is to allow sufficient bleed pressure at high altitudes, When you're at cruise, and you set the engines idle, your EPR shoots through the floor, and your N1 bleed won't supply sufficient pressure to maintain proper pressurization/temperature, thus the N2 Bleed has to be used. the A320's computer has an environmental control system, which is dedicated to the task of pressurization, it's completely automated, and generally the pilot doesn't need to touch it. It will read the Departure elevation, and the Arrival elevation, located in the FMGC's Airac, and base the arrival/destination airports for their word, it also considers what the Pilot inputted for cruise, pre-calculates a pressure/altitude setting for the cabin. The cabin can go up to 8.1 Pounds per square inch, if for some reason the cabin went above 8.1PSI, there is a Safety valve, which is "Pressure triggered" no computers involved. It will open up and allow re-pressurization to 8.1PSI, or continously bleed to 8.1 PSI, if such was necessary. (to avoid a situation where Explosive decompresion, and cabin breakup, may become possible)

Answer 3

I think the height at which the weight of the string is greater than the lift provided by the wind. I know it's a wimp out of an answer but I don't know what kind of string, kite or wind conditions you have.

Answer 4

The three limiting factors are the lift and stability of the kite and the tensile strength of the string.