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An aircraft is heavier than air for flights in the atmosphere (and outer space (e.g. An orbital aircraft)), which uses the airframe's aerodynamic lift to keep itself in the air (when flying within the atmosphere) and the thrust of the power (propulsion) installation for maneuvering and compensating for the loss of total mechanical energy on drag.
A rotary-wing aircraft, in which the lift and thrust necessary for flight are created by one or more main propellers driven by an engine or several engines. They differ in maneuverability, the ability to hover and almost vertical takeoff.
Even an ordinary plane can be taken for a UFO at an unusual viewing angle, when illuminated by sunlight at sunset or dawn, when bright light from the Sun is reflected on it, as well as in a photo, especially if it does not leave a condensation trail.
There are also unusual aircraft designs. In the photo, it may look like a small dot with a metallic luster, a dark dot, a small dark or silver elongated object (cigar-shaped), etc.
It is especially often mistaken for a UFO plane without a condensation trace, if it flies next to the plane leaving a trace (the difference in size is almost invisible to the eye).
Often planes are mistaken for UFOs due to external lighting equipment, especially at night. In addition to the standard red-green-white illumination, blue lights at the end of the blades are used in night modifications of some helicopters.
Helicopter flights over and near populated areas can be caused by various reasons, in addition to military exercises, air excursions, preparation for a holiday, etc.this can be, for example, thermal imaging (infrared aerial photography) of thermal communications of the city, monitoring of the Ministry of Emergency Situations, police, and much more.
Also, various devices attached to an airplane or other aircraft can be mistaken for a UFO. For example, AWACS (Aviation Radio Detection and Guidance Complex), OGAS (Lowered sonar stations) on helicopters, etc.
The aircraft can perform various maneuvers and aerobatics both independently and in a group. To an outside observer, this may be perceived as "strange behavior for an airplane".
Most often, this is the training of pilots ' skills on military aircraft. But also, for example, an unusual flight can be observed during scientific research. Here is an example with the study of clouds:
There are five small holes in the nose of the C-130 aircraft, each of which is connected to a pressure sensor that measures the wind. By performing certain maneuvers, the NAAMES team can calibrate and verify vertical wind measurements, which are combined with humidity measurements to study particles in and around clouds.
The following maneuvers ("Tail turns") affect the horizontal pressure sensors when the aircraft moves from side to side in a crab motion. "Porpoise" is a maneuver in which the aircraft moves up and down, using a vertical pair of pressure sensors on the nose. The purpose of the "Bow Tie" is to map out the vortex features and variability of the ocean around the ship in the least number of passes) they allow scientists to collect data at different heights and cover as much of the area as possible, while confirming the accuracy of scientific measurements.
Similar movements of the aircraft are also used for calibration of NASA instruments.
The HZ-1 aerocycle was built by De Lackner in the mid-1950s. Originally called the DH-4 Helivector, it was later renamed the HZ-1 Aerocycle and resembled a hybrid of a helicopter, motorcycle and outboard motor.
The HZ-1 aircraft was equipped with a 40 hp engine, which was mated to two coaxially arranged propellers. The screws with a diameter of 4.6 meters rotated in opposite directions, which allowed avoiding the rotation of the platform itself, on which the pilot was standing. At the same time, the pilot was positioned vertically directly above the rotating propeller blades, a steering wheel similar to a motorcycle was provided to control the device. With its help, the pilot had to change the speed, direction and altitude of the HZ-1 flight (in order to make a turn, it was necessary to tilt the entire aircraft in the right direction — just as it is done on a motorcycle).
It was assumed that the US military would be able to effectively use this flying platform only after a 20-minute briefing. But test pilot Selmer Sandbai, who tested the HZ-1, had a different opinion. In particular, he noted:
"It took me just one flight to understand that it would be damn difficult for an ordinary person to cope with this design."
All the identified shortcomings led to the closure of this program. At least one such flying platform has survived to this day, which is displayed as a museum exhibit.
Orbital plane (OS), aerospace plane (VKS), aerospace, aircraft — winged aircraft airplane schematics, or coming into orbit of an artificial satellite of the Earth by means of vertical or horizontal start and returning with her, after achieving targets, making horizontal landing on the airfield, actively using while reducing the lifting force of the glider. It combines the properties of both an airplane and a spaceship.
- Kosmoplan-OS (VKS) as the second stage of an aerospace system (AKS), put into orbit not only by its own engines, but also by means of a launch vehicle (RN), as well as rocket stages-accelerators, either by a winged 1st stage of the AKS at a vertical launch or by a booster aircraft or by a winged 1st stage of the AKS at a horizontal launch. In systems with a horizontal launch, the air launch technology is used to launch spaceplanes. In fact, the first in the history of realized spaceplanes that performed suborbital manned space flights and for 20 years the only AKS was the American hypersonic rocket plane North American X-15 of the 1960s (13 of its flights above 80 km (US standards), and 2 of them, in which the space limit of 100 km was exceeded (according to FAI world standards), were recognized as suborbital manned space flights, and their participants were astronauts).
- A spaceship is a single-stage AKS that enters orbit at the expense of its own engines during a vertical or horizontal launch. Due to the need for an order of magnitude more complex propulsion and structural technologies when creating spaceships, none of the spacecraft projects has been implemented to date. One of the first detailed projects of AKS and spaceships was the unrealized project of Zenger (in the late 1930s .) on the creation of a partially-orbital combat spacecraft-bomber "Silberfogel" in Nazi Germany.
Helicopters in the sky
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Two aircraft flying at different levels.
One thing leads to contrails, and the second looks like a bright white dot.
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The development of unmanned helicopter Ka-137 began in OKB im. N. To.Kamov in 1994. The design was used the experience of creating helicopter Ka-37. To minimize the moments of inertia of the fuselage was given a spherical shape. This allowed to abandon the tail. To save the alignment when you replace the equipment compartment of the target equipment has been placed in the center of the fuselage. The preliminary draft was prepared in 1995. In 1996 made-scale mockup of the helicopter.
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bomber B2 Stealth
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Helicopter flight night
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MV-22B Osprey USMC UDC takes off from USS Bonhomme Richard (LHD-6)
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Polizieschi helicopter searches for a gunman in South Los Angeles
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Video compilation of 8-second exposures, taken during the rescue of tourists on the mountain bell Rock (AZ).
We can see the amazing skills of the helicopter pilot, which he uses to stay stable.
Author Kelli Klymenko. Opublikovano on facebook.com on October 15, 2013
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Sochi Airport - Adler. Twilight. The Board comes in to land. 03.01.2017 Entry with surveillance cameras (webcam, IP) site "Web camera Sochi". Fast playback.
Part of the original video.
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FA-18. You can see a cloud of condensation formed as a result of local pressure changes (the Effect of the Prandtl - Glauert). Often, such a picture was erroneously perceived as "breaking the sound barrier".
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Performance figures of aerobatics.
Matt Halls on the Australian aerobatics 2007.
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This picture and accompanying text appeared in November 1941 in the magazine Modern Mechanix.
That's what Modern Mechanix says about it:
Jess Dixon of Andalusia (Alabama), tired of traffic jams, so he designed and built this new aircraft. It's a combination car, helicopter, gyroplane and motorcycle. It is equipped with engine capacity of 40 HP, air-cooled. He claims that his machine is capable of speeds up to 100 mph.
On the website Aerofiles has a small review on this helicopter:
1936 = Roadable helicopter. 1pOH; 40hp air-cooled engine. Coaxial rotor system with cyclic and collective pitch control. “Foot pedals actuated a hinged vane on the tail, counting on rotor downwash for yaw control.” In a photo the helicopter is seen hovering, but no test results were found.
Pictured helicopter is seen hovering, but test results not detected.
According to the newspaper Andalusia, this helicopter was named "Flying Ginny", but according to this source (" Mobile aviation" ) is a small flying machine called "Hummingbird."
It looks like Jess Dixon was offered a job the company Twin Coach in Ohio for further development of its aircraft. This work seems to have culminated in a TCAH-1, twin coaxial helicopter, equipped with two engines of 75 HP
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The Mi-26 helicopter on the suspension was taken in Kronstadt, a 15-ton multi-purpose all-weather fighter su-27
27 November 2018, the helicopter took off from the airfield Pushkin, his journey was about 60 miles.
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A fragment of a videotape of the flight.
Horten Ho-2 Flying Wing Test Flight 1935
Author: Bomberguy
Posted on: 23 Feb. 2008
Experimental jet aircraft, which had been developed in Germany during the Second world war. The world's first AIRCRAFT "flying wing" jet-propelled.
First glider "Horten-I" (the wooden glider with a fabric cover is controlled by ailerons and the steering brakes at the wing tips) flew in 1931, 1934, "Horten II".
March 1, 1944 (Horten H IX V1), the second — February 1945 (Horten H IX V2)
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Vnukovo. The plane in the fog.
Author: Marina Lystseva (fotografersha)
2013-09-18 03:52:00
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The aircraft are on a collision course on different levels. A visual illustration of the addition of velocities.
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Flyover - Bank of America 500 Charlotte Motor Speedway 10/11/14
Author: fatncrazy
Published: October 12. 2014
A group of military aircraft flying over the track NASCAR Bank of America 500 just before the race.
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"Sunny" the plane continued to fly around the world (news)
Author: NTDRussian
Published: 4 Mar. 2016
The aircraft Solar Impulse-2, running on the energy of the Sun, made a test flight in Hawaii.
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The time of discharge of mass of water with the fire of the Il-76P
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Helicopter night.
You should pay attention to the external lighting facilities on the lopostyami, in particular the circle formed when you turn on these lights during the flight. Usually these lights are only used when approaching the airport before boarding, but sometimes may appear in normal flight.
If you look at a helicopter from the ground, the impression of a round or oval object white (at Celaya, the lights on the lopostyami) or blue (with blue lights use night the visionsI) colors with twinkling lights in the Central part.
This impression is increased if the helicopter is flying in haze or clouds.
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Attack helicopter Mi-24 Polish air force with the "night illumination"
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Night launch of the Mi-171SH and a low pass over the Park of culture
Author: Jack A Helicopter
Published: 28 Jul. 2017
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The plane without a trace of condensation, removed by an observer from earth.
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Zapata Flyboard Air™
Personal aircraft running on jet engine capable of take-off and individual mobility.
The Air Flyboard Inventor Franky Zapata.
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In the photo — the process of transporting fighter aircraft F-35.
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In the mid-1950s, the US military developed a flying device that allows a single soldier to move through the air. The device was named HZ-1. It was assumed that such a single-seat helicopter could be used for movement in a nuclear war.
The first launch of the aircycle took place in January 1955 on the territory of the Brooklyn Army Terminal. As practice has shown, to learn to fly on this device, some soldiers had enough and five minutes. The Ministry of Defense recognized the device as promising and ordered a dozen test vehicles. The American army was about to turn into an invincible flying cavalry, falling on the enemy's head directly from the sky.
But further tests showed that it was not so easy to control the air bike. During the tests, two pilots touched the ground with their blades and fell. A special rapid deployment parachute was developed for the HZ-1, but even this did not help — the project was recognized as a failure and frozen. Only one copy of the air bike has survived to this day-it is stored in the US Army Transport Museum (Virginia).
The flight of the X-15 rocket plane — the first hypersonic aircraft and VKS-spaceplane in history, which performed suborbital manned space flights
Bella-1 in anagra
The research, development and construction of an experimental model of an aerodrome-free aircraft "Bella-1" has been carried out for more than 10 years. The first flight: 1996. The aircraft is designed for operation in the conditions of the Far North, Siberia and the Russian Far East
© istockphoto.com
A fire helicopter is a helicopter designed to extinguish a fire from the air by water bombing (draining water onto a fire to be extinguished).
As a rule, a fire helicopter is equipped with a suspended spillway bucket, which scoops up the water needed to extinguish a fire in the nearest reservoir (land fire helicopters) or on-board water tanks (amphibious fire helicopters).
Planes line up before landing at the airport. From a distance, because of the included runway lights, it may look like a strip (or any other shape) of points of light
Hiller VZ-1 Pawnee is an aircraft ("flying platform") of Hiller Aircraft with two coaxial screws enclosed in a duralumin ring—casing, which were driven by two Nelson H-56 air-cooled engines. In the center of the platform there was a platform for the pilot, a control panel and several instruments.
The pilot could change the speed and direction of movement of the device by shifting the position of his body. In total, 6 devices of three types were built, differing in power plants and the size of the ring casing.
The first flight took place on February 9, 1955. The program was closed in 1963.
Williams X-Jet (Eng. Williams X-Jet) is an experimental aircraft, a single—seat jet flying platform. It was an open cockpit with a vertically mounted Williams F107 turbofan engine (in its modified version).
The device did not have any aerodynamic surfaces to create lift; it, like the horizontal component of speed, was created exclusively by the jet thrust of the engine. The pilot was standing, the control of the device was carried out by deflecting the pilot (and, accordingly, the device) in the desired direction (balancing control) and changing the engine power.
During tests conducted by the US Army in the 1980s, the device demonstrated a flight speed of up to 100 km / h and a flight duration of up to 45 minutes, very good maneuverability. The characteristics of the device did not suit the customer (in particular, in terms of speed, load capacity, range, the device was certainly inferior to light helicopters), as a result, funding was discontinued, and the project was closed.
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