Hypersonic passenger aircraft. Free Technical Library News

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Hypersonic passenger aircraft

28.08.2015

The US Patent and Trademark Office has granted a patent application by Marco Prampolini and Yohann Coraboeuf for an "ultra-fast air vehicle and associated method of aerial locomotion." As the assignee in the patent, the European aerospace consortium EADS, of which Airbus is a part, is indicated. In other words, Airbus has just received a patent for a hypersonic passenger aircraft that is designed to fly above 20 km at Mach 4.

According to the patent, the aircraft is actually a flying tanker, the main part of the fuselage of which is filled with liquid oxygen and liquid hydrogen. In front of the aircraft is a cabin for 24 passengers, and in the very nose of the cockpit. The aircraft is a "Gothic" delta wing, behind which are placed trapezoidal vertical stabilizers. Their task, in addition to the normal function of the elevators, is to change the center of gravity of the aircraft as the fuel burns.

The main distinguishing feature of the aircraft is its set of engines of various types. During takeoff, the aircraft will use conventional turbojet engines. When approaching one Mach, the turbojet engines turn off and retract into the fuselage. A rocket-powered hatch will open at the rear of the vehicle, propelling the aircraft upward in a near-vertical trajectory. At the end of the acceleration stage, the aircraft speed will reach Mach 4 - 4,5 at an altitude of 30 to 000 m. At this moment, the rocket engine will be turned off and retracted back into the aircraft body, and a ramjet engine will start working instead of it, which will will allow the plane to fly from Paris to San Francisco in three hours.

Thanks to the design of the wing-fuselage, the sonic boom wave is scattered over a space with a length of 100 to 175 km at an angle of 11-15 degrees and does not reach the Earth. At the end of the flight, descent and landing will again be carried out using turbojet engines.

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US Air Force space drone 28.12.2013

The prototype of a promising orbital unmanned aerial vehicle X-37B, launched by the Americans into orbit, has spent more than a year in space.

For what purposes the drone is in orbit is unknown. Data about its payload is classified. The US Air Force, involved in this project, does not name the date of return of the device. However, according to Space.com, the military announced that upon return, the craft would likely land at NASA's Cape Canaveral Center in Florida.

The X-37B unmanned aerial vehicle entered Earth orbit on December 11 last year. One of the goals that may be pursued by the US Air Force and the American concern Boeing, which created the drone, is to find out whether devices of this class are suitable for repeated use. This is necessary to prove the possibility of a relatively cheap launch of various payloads into the Earth's orbit.

Previously, X-37B drones have completed two flights in near-Earth orbit. One lasted from April 22 to December 3, 2010, and the second lasted from March 5, 2011 to June 16, 2012. Test flights of two drones were considered successful. In the process of launching the devices, the heat resistance of the coating of their body was checked. The controllability of the X-37B was also tested when flying at hypersonic speed at the time of entry into the atmosphere from space.

The X-37B has a wingspan of 4,5 m and a length of 8,8 m. The take-off weight of the unmanned vehicle, capable of landing like an airplane upon returning to Earth, is approximately 5 tons. in orbit is 270 days.

There are opinions that such drones will perform reconnaissance missions in the future. Also, some analysts suggest, due to the covert nature of the program, that the X-37B may be a harbinger of an orbital weapon capable of dropping bombs or incapacitating hostile satellites. Although the Pentagon has repeatedly stated that the space plane is only a "testing ground" for new technologies.

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