There were no menu items that were ever designed with the microwave in mind as a preparation method. Some chefs would use it to reheat a plate of food in a crunch but it was against policy and it would create fireworks onboard as the English bone china had a gold emboss on it that would spark.
Hot water would be the only way a baby's bottle could be heated. Even if they had the ability to heat your sandwich they are correct in not allowing that due to health, food and safety regulations. Above all else, most passengers with manners would agree, it's a rather tacky request. Sign up to join this community. The best answers are voted up and rise to the top. Stack Overflow for Teams — Collaborate and share knowledge with a private group.
Create a free Team What is Teams? Learn more. Did commercial airliners have microwave ovens in the past? Ask Question. Asked 6 years, 7 months ago. Active 2 years, 8 months ago. Viewed 8k times. Improve this question. I guess this is the reason why the food is in aluminum bowls.
Plastic usually is a bad idea in such an oven, and also your sandwich should have been placed in a aluminum bowl, if they heat it for you.
Didn't know that! Add a comment. Active Oldest Votes. Improve this answer. Community Bot 1. Dianna Dianna 61 1 1 silver badge 2 2 bronze badges. There are many different approaches for how to power these vehicles; however, the common theme is that power must be transmitted from a source remote to the aircraft. Some of the possibilities for power transmission include solar power, the heating of air underneath the aircraft to cause thrust, and using antennas to convert microwave radiation into electrical power.
The goal of this project was to design and build a rectenna to receive microwave energy and convert it to usable DC power for propulsion. This required a flexible substrate in order to conform to the aircraft exterior, and an efficient antenna design, both with respect to power and to area and mass required.
To this end, a prototype rectenna was designed and experimentally tested under controlled microwave radiation. The efficiency of power conversion and storage has been characterized for this system.
A patch antenna design was chosen for the antenna array in order to simplify the design and manufacturing. Other designs considered include dipole antennas with discrete filter elements and dipole antennas with microstrip filter elements. The dipole antenna with filter elements is simple to manufacture, but is highly polarized and thus sensitive to the orientation of incoming radiation. Microstrip filter elements have proven to be difficult to design with the constraints on manufacturing capability.
The capacitor design would be a significant fraction of the antenna surface area and would likely substantially interfere with efficient operation. The remaining design option, patch antennas, has proven simpler to design. The basic patch design utilizes a square antenna sized to match the frequency and reflective plane spacing. The basic square patch antenna side should be a half-wavelength. This does not take into account the fringing that occurs when the patch is placed over the conductive reflecting plane.
Matlab code was used to solve the equations for the ideal patch dimensions. The Matlab program uses the microwave frequency, gap dimensions, dielectric constants of the materials, and various physical constants to determine the ideal patch antenna dimensions. The prototype board is manufactured with antennas with a 7. The ideal spacing of each of the elements is estimated as a half-wavelength, so each antenna element is 7. A low-pass filter was designed and placed between each of the antenna elements to try to improve its power conversion efficiency by eliminating higher harmonics.
The filter is designed to prevent the high-frequency signal from the microwave from propagating to the next element and potentially becoming out of phase.
If the signal is out of phase, it can decrease the efficiency of the element through destructive interference and cause a decrease in power output. By putting a low-pass filter in, the voltage experienced at the next element should be relatively constant. The filter consisted of two surface-mount parts — a 2. Since the transmitter used for testing uses a frequency of The diode has a maximum mV forward voltage loss at 1 mA. This allowed the diode to conduct even when there was a minimal voltage potential created by the antenna elements.
The antenna layout was designed to successfully integrate the parts. The antenna feed points were chosen just to allow straight connections between the patch elements. The traces were sized to match the component pads and were kept as short as possible to minimize pickup and re-radiation. The prototype was tested using a Many of them actually test their foods in-flight to see how they taste at 36, feet. The lack of humidity dries out your nose and mouth.
And the change in pressure as the plane takes off actually numbs about a third of your tastebuds. The only way that airlines can account for those effects is to test foods in-flight. Think airlines should place a priority on serving food that tastes good?
As CNN reports, airlines prioritize food safety , not flavor. The network spoke to Fritz Gross, director of culinary excellence at the caterer that supplies 30, meals daily for DragonAir, United Airlines, and British Airways. You can imagine how easily an airline can get sued.
And they have to cook fish and chicken to exactly the right temperature, even if that compromises taste or texture. Food tastes different up in the air. The reason why involves the fact that the cabin pressure drops during your flight. As The Conversation explains, reduced atmospheric pressure and lower oxygen levels dull your appetite.
And even the changes in altitude can change your sensitivity to some tastes. Plus, the dry atmosphere in the cabin also dries out your mouth. That, in turn, changes the composition of your saliva and leaves an unpleasant taste in your mouth. All of these factors make it that much harder to enjoy whatever meal your airline has decided to serve. Perhaps not. When you order a cup of tea anywhere on the ground, the water is probably boiling hot.
Delays sometimes mean the food goes to waste. Flight delays affect everybody, including the caterers. Thrillist explains that as you wait to board your plane, the food that the airline plans to serve is also waiting. If the flight gets delayed and the food has already been loaded onto the plane, the airline may have to throw it all away in order to prevent everybody from getting food poisoning.
They just order a replacement from the catering company instead of serving a suspect meal. The altitude might affect your digestion. You may have thought it was just your imagination. But Traveller reports that there may be some merit to the theory that airplane food may be to blame if you suffer flatulence during your flight.
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