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Aircraft used to create brief weightlessness
A reduced-gravity aircraft is a type of fixed-wing aircraft that provides brief near-weightless environments for training astronauts, conducting research
Reduced-gravity_aircraft
Absence of the sensation of weight
official nickname 'Weightless Wonder' for publication. NASA's current Reduced Gravity Aircraft, "Weightless Wonder VI", a McDonnell Douglas C-9, is based at Ellington
Weightlessness
American space entertainment and tourism company
30 seconds of reduced gravity, including two that simulate Lunar gravity (one-sixth of Earth's). Each parabola begins with the aircraft climbing at a
Zero_Gravity_Corporation
1995 film by Ron Howard
for his cast and obtaining permission to film scenes aboard a reduced-gravity aircraft for realistic depiction of the weightlessness experienced by the
Apollo_13_(film)
2016 single by OK Go
2016 that featured the members in a zero gravity environment created via flight in a reduced gravity aircraft. They produced the video with support from
Upside_Down_&_Inside_Out
Point over which the aircraft would balance
center of gravity (CG) of an aircraft is the point over which the aircraft would balance. Its position is calculated after supporting the aircraft on at least
Center of gravity of an aircraft
Center_of_gravity_of_an_aircraft
Experiment: Part Two where an actual zero-gravity intercourse scene was accomplished with a reduced-gravity aircraft. The filming process was particularly
Sex_in_space
2013 American science fiction film by M. Night Shyamalan
for two people and would only be eligible to participate in the reduced gravity aircraft on October 25 following a medical exam. Several books were released
After_Earth
American astronaut (1932–1967)
the third (Roger B. Chaffee) in the Apollo 1 fire earlier that year. The aircraft crashed in Florida near Tallahassee within an hour of departing Patrick
Clifton_Williams
has used several different types of aircraft on a permanent, semi-permanent, or short-term basis. These aircraft are usually surplus, but in a few cases
List_of_NASA_aircraft
Short-fuselage derivative of the Airbus A300 airliner
scientific research laboratory dedicated to weightlessness. This reduced-gravity aircraft is used to realise parabolas, allowing to perform twenty-two seconds
Airbus_A310
Bone loss caused by microgravity
Artificial gravity Effect of spaceflight on the human body Space medicine Space adaptation syndrome Microgravity University Reduced-gravity aircraft Timeline
Spaceflight_osteopenia
American astronautical engineer
assistant and member of the flight crew for a reduced-gravity aircraft as part of a NASA zero gravity experiment. In 2014 and 2015, she worked as a data
Ariel_Ekblaw
English theoretical physicist (1942–2018)
started as a singularity. Their joint essay was the runner-up in the 1968 Gravity Research Foundation competition. In 1970, they published a proof that if
Stephen_Hawking
Free-flying robotic system
ground laboratories as well as in parabolic flights using NASA's reduced gravity aircraft. After the initial development, the SPHERES program was taken over
SPHERES
Astronaut training in a neutral buoyancy environment
astronauts were trained in the “zero gravity” condition by flying a parabolic trajectory in an aircraft that caused reduced gravity for thirty second intervals
Neutral buoyancy simulation as a training aid
Neutral_buoyancy_simulation_as_a_training_aid
Aerospace company in Switzerland
offered flights in reduced gravity aircraft, a modified Airbus A300. Each flight included 15 parabolas during which the aircraft dives at a 45° angle
Swiss_Space_Systems
Indian traveller and media personality
the 9/11 terror attack. Zero Gravity: Describes his experience of zero gravity training in a specially designed aircraft at Kennedy Space Center. Baltic
Santhosh_George_Kulangara
American rock band
the song while moving about in microgravity, with the aid of a reduced-gravity aircraft provided by the Russian S7 Airlines. On July 20, 2016, OK Go released
OK_Go
2004 British TV series or programme
They also took a flight on a reduced-gravity aircraft in their spacesuits and experienced the effects of zero gravity. Mission control Mark Tandy as
Space_Odyssey_(TV_series)
Russian heavy four-engined military transport jet aircraft
models have also been produced for aerial firefighting and reduced-gravity training. The aircraft was conceived by Ilyushin in 1967 to meet a requirement
Ilyushin_Il-76
Former NASA program
university students to perform microgravity experiments aboard NASA's reduced-gravity aircraft at Johnson Space Center in Houston, Texas. Acceptance into the
Microgravity_University
Military transport aircraft series based on the DC-9
II aircraft". navair.navy.mil. Archived from the original on September 16, 2018. Retrieved September 16, 2018. The History of C-9B Reduced Gravity Research
McDonnell_Douglas_C-9
Types of aircraft behavior
"short-period mode". The motion is a rapid pitching of the aircraft about the center of gravity, essentially an angle-of-attack variation. The short-period
Aircraft_dynamic_modes
Airline of Russia
music video for their song "Upside Down & Inside Out", aboard a reduced gravity aircraft. On 28 August 2018, S7 would invest $192.87 million in a new manufacturing
S7_Airlines
2nd group of NASA astronauts
Next Nine astronauts flew two flights in a reduced-gravity aircraft, a modified KC-135 Stratotanker aircraft. Each flight flew 20 parabolas that gave them
NASA_Astronaut_Group_2
square – Reduced-gravity aircraft – Reduced take-off and landing (RTOL) – Relaxed stability – Remove before flight tag – RIAT – Roadable aircraft – Rocket
Index_of_aviation_articles
Motion of a body subject only to gravity
body Free-fall time G-force High-altitude military parachuting Reduced-gravity aircraft Terminal velocity Weightlessness Cohen, Morris R.; Drabkin, I.
Free_fall
American astrophysicist
undergraduate, she participated in research aboard NASA's KC-135 reduced-gravity aircraft. Straughn pursued graduate studies at Arizona State University
Amber_Straughn
Class of supercarriers for the U.S. Navy
improved energy efficiency, reduced operating costs, and reduced crew requirements. Key changes include the Electromagnetic Aircraft Launch System (EMALS),
Gerald R. Ford-class aircraft carrier
Gerald_R._Ford-class_aircraft_carrier
Aviation term for a corkscrew downward path
the centre of gravity enough to let the now-empty aircraft self-recover from a spin and land itself. In purpose-built aerobatic aircraft, spins may be
Spin_(aerodynamics)
Food consumed by astronauts in outer space
sherry for one Skylab mission and packaged some for testing on a reduced-gravity aircraft. In microgravity, smells quickly permeate the environment and the
Space_food
Physical and science fiction concept
Anti-gravity is the concept of a force that would exactly oppose the force of gravity. Under the known laws of physics, anti-gravity is not possible.
Anti-gravity
Comparison of a wide range of accelerations
acceleration Mechanical shock Standard gravity International System of Units (SI) SI prefix Stanford University: Gravity Probe B, Payload & Spacecraft, and
Orders of magnitude (acceleration)
Orders_of_magnitude_(acceleration)
Military airfield in Switzerland
empty at Dübendorf. On 22 September 2015, the Airbus A310 Zero-G reduced gravity aircraft flew from Dübendorf Air Base, in the first operational flight of
Dübendorf_Air_Base
Aerial bomb without guidance, designed for ballistic delivery
unguided bomb, also known as a free-fall bomb, gravity bomb, dumb bomb, or iron bomb, is an aircraft-dropped bomb (conventional or nuclear) that does
Unguided_bomb
1954 airlifter series by Convair
Hercules aircraft and the USN with C-12 Hurons.[citation needed] In 1959, a C-131 was the first aircraft to be used as a reduced-gravity aircraft or 'vomit
Convair_C-131_Samaritan
Swedish and American marine biologist and NASA astronaut
her undergraduate years, and ran a student experiment on a NASA reduced gravity aircraft "vomit comet" in her senior year. Meir graduated from Brown in
Jessica_Meir
American reality television series
Heidecker, and Keir Dullea. Josh experiences weightlessness on a reduced-gravity aircraft. 6 "Merry Josh-Mas" December 16, 2020 (2020-12-16) N/A Josh celebrates
Josh_Gates_Tonight
29th governor general of Canada, former CSA Astronaut (born 1963)
commercial pilot licence and logged 120 hours as a research operator on reduced gravity aircraft. In April 1996, Payette was certified as a one-atmosphere deep
Julie_Payette
Polish YouTuber
he underwent training, culminating in a parabolic flight in a reduced-gravity aircraft. The event was organized as part of the Andromeda Initiative, in
Dariusz_Hoffmann
Vehicle or machine that can fly by gaining support from the air
An aircraft is a vehicle that can fly by gaining support from the air. It counters the force of gravity by using either static lift or the dynamic lift
Aircraft
American entrepreneur
buoyancy simulation" The need for this training method was based on reduced-gravity aircraft flights limiting weightless periods to 20 seconds. Ensuring safety
Sam_Mattingly
with the band performing the song aboard a reduced gravity aircraft, simulating periods of micro-gravity via parabolic flight. The video was shot in
OK_Go_videography
Modified Boeing 747 airliners used to transport Space Shuttle orbiters
The Shuttle Carrier Aircraft (SCA) are two extensively modified Boeing 747 airliners that NASA used to transport Space Shuttle orbiters. One (N905NA) is
Shuttle_Carrier_Aircraft
Season of television series
filming in Earth's gravity. In order to film in microgravity, the MythBusters boarded a reduced gravity aircraft run by Zero Gravity Corporation and filmed
MythBusters_(2008_season)
Spread of weight in a vehicle
weight of passengers, cargo, and fuel throughout an aircraft, so as to keep the aircraft's center of gravity close to its center of pressure to avoid losing
Weight_distribution
Unique point where the weighted relative position of the distributed mass sums to zero
of aircraft, vehicles and vessels, forces and moments need to be resolved relative to the mass center. That is true independent of whether gravity itself
Center_of_mass
American manufacturer of 3D printers
team performed over 400 microgravity test parabolas on NASA's reduced gravity aircraft (the "Vomit Comet"), proving their 3D printing in microgravity
Made_in_Space,_Inc.
South African aviator (1988–2019)
Center for a week to do tests, such as skydiving and a journey on a reduced-gravity aircraft, ahead of a planned one-hour suborbital flight on board a XCOR
Mandla_Maseko
Aircraft whose only horizontal aerodynamic surface is its main wing
aircraft a significant distance below the wing, so that gravity will tend to maintain the aircraft in a horizontal attitude and so counteract any aerodynamic
Tailless_aircraft
Helicopter with two horizontal rotor assemblies
A tandem-rotor aircraft is an aircraft with two large helicopter rotor assemblies mounted one in front of the other in the horizontal plane. This configuration
Tandem-rotor_aircraft
Use of circular rotational force to mimic gravity
Artificial gravity is the creation of an inertial force that mimics the effects of a gravitational force, usually by rotation. Artificial gravity, or rotational
Artificial_gravity
Study of the performance, stability, and control of flying vehicles
angle will arise if an aircraft yaws about its centre of gravity and if the aircraft sideslips bodily, i.e. the centre of gravity moves sideways. These
Flight_dynamics
Wave where gravity is the main restoring force
In fluid dynamics, gravity waves are waves in a fluid medium or at the interface between two media when the force of gravity or buoyancy tries to restore
Gravity_wave
Aircraft control computer software
the current aircraft centre of gravity. This aims to create a compromise between adequate pitch control with a forward center of gravity and not-too-sensitive
Flight_control_modes
Aircraft component
center of gravity is zero. The vertical force exerted by the stabilizer varies with flight conditions, in particular according to the aircraft lift coefficient
Stabilizer_(aeronautics)
Canceled U.S. Air Force human spaceflight program
Zero-G training was conducted in a Boeing C-135 Stratolifter reduced-gravity aircraft. A Flotation-Egress trainer allowed the astronauts to prepare for
Manned_Orbiting_Laboratory
For health conditions encountered during spaceflight
habitat Medical treatment during spaceflight Microgravity University Reduced-gravity aircraft Renal stone formation in space Spaceflight osteopenia Spaceflight
Space_medicine
NASA research facility in Ohio
the effect of ice accretion on aircraft wings and body as well as to test anti-icing systems for aircraft. The Zero Gravity Research Facility is a vertical
Glenn_Research_Center
Fixed-wing aircraft with a main central wing plus fore and aft surfaces
can be reduced in size, so also reducing weight and drag. It is claimed that the total area of all wing surfaces of a three-surface aircraft can be less
Three-surface_aircraft
Aircraft component
reduces the amount of weight that is off-center from the plane's center of gravity, and which changes as it flies and which would make the aircraft less
Aircraft_fuel_tank
Inability of a person to correctly determine their body position in space
determine aircraft attitude by reference to an attitude indicator. Spatial disorientation can occur in other situations where visibility is reduced, such
Spatial_disorientation
sideforce-generating surfaces being above or below the center of gravity of the aircraft. Along with dihedral, sweepback, and weight distribution, keel
Keel_effect
Aircraft configuration in which a small wing is placed in front of the main wing
tailplane configuration found on most aircraft, an aircraft designer may adopt the canard configuration to reduce the main wing loading, to better control
Canard_(aeronautics)
American USAF and NASA engineer
of mass, moments of inertia, and body movement. Whitsett used a reduced-gravity aircraft to validate his model, but the test was inconclusive. He started
Charles_E._Whitsett
NASA astronaut training facility in Houston, Texas
Weightlessness – Absence of the sensation of weight Reduced-gravity aircraft, also known as Vomit Comet – Aircraft used to create brief weightlessness Neutral
Neutral_Buoyancy_Laboratory
Science of air vehicle orientation and control in three dimensions
dimensions about the vehicle's center of gravity (cg), known as pitch, roll and yaw; these are collectively known as aircraft attitude, often principally relative
Aircraft_flight_dynamics
Romanian-American aerospace engineer and inventor
dissertation, "Bubble Generation in a Continuous Liquid Flow Under Reduced Gravity Conditions," examined bubble generation behavior under both co-flow
Salvatore_Pais
1912 military aircraft family by the Royal Aircraft Factory
section. This arrangement allowed the aircraft to be flown "solo" without affecting the aircraft's centre of gravity. Behind the pilot's position, a curved
Royal_Aircraft_Factory_B.E.2
Surface that allows a pilot to adjust and control an aircraft's flight attitude
fixed wing aircraft. An aircraft is free to rotate around three axes that are perpendicular to each other and intersect at its center of gravity. To control
Flight_control_surfaces
System used to help aircraft get into the air
tows. Early pioneers in powered and unpowered flight used gravity to accelerate their aircraft to a speed which allowed its wings to generate enough lift
Assisted_take-off
Nuclear bomb
The B61 nuclear bomb is the primary thermonuclear gravity bomb in the United States Enduring Stockpile following the end of the Cold War. It is a low-to-intermediate
B61_nuclear_bomb
Month of 1960
simulation of weightlessness for the Mercury astronauts, using reduced-gravity aircraft flying, was made in three days of an indoctrination for at the
March_1960
School district in Gloucester County, New Jersey, US
Jr/Sr High School to fly their experiment aboard the agency's reduced gravity aircraft, the 'Weightless Wonder,' a modified McDonnell Douglas DC-9." Home
Woodbury_Public_Schools
Measurement of variations in Earth's gravitational field
Gravity gradiometry is the study of variations (anomalies) in the Earth's gravity field via measurements of the spatial gradient of gravitational acceleration
Gravity_gradiometry
1984 experimental aircraft family by Grumman
wings result in reduced trim drag and reduced wave drag, while using the strakes for trim in situations where the center of gravity is off provides less
Grumman_X-29
Boat or aircraft component
some aircraft (e.g. Concorde, McDonnell Douglas MD-11), fuel may be shifted to tanks in the tail during cruise to reposition the center of gravity in order
Trim_tab
Undercarriage of aircraft or spacecraft
engines at a reduced power setting on the approach it is necessary to reduce airframe noise to make a significant reduction to total aircraft noise. The
Landing_gear
British jet-powered delta wing strategic bomber
technically advanced, and therefore the riskiest option. Several reduced-scale aircraft, designated Avro 707s, were produced to test and refine the delta-wing
Avro_Vulcan
Military aircraft for air-to-air combat
Fighter aircraft (early on also pursuit aircraft) are military aircraft designed primarily for air-to-air combat. In military conflict, the role of fighter
Fighter_aircraft
1983 aviation accident in Canada
stage the race. As the aircraft slowed on approach to landing, the reduced power generated by the ram air turbine rendered the aircraft increasingly difficult
Gimli_Glider
Partially aero-static aircraft
A hybrid airship is a powered aircraft that obtains some of its lift as a lighter-than-air (LTA) airship and some from aerodynamic lift as a heavier-than-air
Hybrid_airship
Fighter aircraft tactical maneuvers not possible using only aerodynamic techniques
engines to the aircraft's weight, which is the force of gravity on the aircraft. It is generally desirable in any aerobatic aircraft, as a high-thrust-to-weight
Supermaneuverability
Total aircraft weight during flight or ground operation
during aircraft loading (zero fuel conditions, centre of gravity position, and weight distribution). Weights could be restricted on some type of aircraft depending
Aircraft_gross_weight
Flight instrument which displays the aircraft's orientation relative to Earth's horizon
which allows the aircraft to pitch and roll as the gyro stays vertically upright. A self-erecting mechanism, actuated by gravity, counteracts any precession
Attitude_indicator
Aircraft which have asymmetrical designs
the aircraft speed is low. This does not affect the symmetry or otherwise of the aircraft itself. While most aircraft have a central center-of-gravity line
Asymmetrical_aircraft
quadjet, is a jet aircraft powered by four engines. The presence of four engines offers increased power and redundancy, allowing such aircraft to be used as
Four-engined_jet_aircraft
Stability of an aircraft in the pitching plane
center of gravity is permitted to move. If the center of gravity is too far aft, the aircraft will be unstable. If it is too far forward, the aircraft will
Longitudinal_stability
Physics of heavier than air aircraft
distance behind the centre of gravity, this sideways force causes a yawing moment then a yawing motion. On a large aircraft there may be several independent
Aircraft_flight_mechanics
Measures to combat enemy aerial forces
Anti-aircraft warfare (AAW) or air defence (air defense in American English) is the counter to aerial warfare and includes "all measures designed to nullify
Anti-aircraft_warfare
Aircraft control surface used to control pitch
are flight control surfaces, usually at the rear of an aircraft, which control the aircraft's pitch, and therefore the angle of attack and the lift of
Elevator_(aeronautics)
Fixed-wing aircraft with a single main wing plane
aircraft, shoulder-wings tend to be mounted further aft than a high wing, and so may need to be swept forward to maintain correct center of gravity.
Monoplane
Mathematical model of Earth's gravity
a given problem. For many problems such as aircraft simulation, it may be sufficient to consider gravity to be a constant, defined as: g = g 45 = {\displaystyle
Theoretical_gravity
Unidentified 1971 airplane hijacker
B. Cooper, hijacked Northwest Orient Airlines Flight 305, a Boeing 727 aircraft flying from Portland, Oregon, to Seattle, Washington. Cooper told the flight
D._B._Cooper
Type of critical issue in aircraft
phenomenon is predominantly associated with aircraft that have conventional landing gear, due to the centre of gravity being positioned behind the main wheels
Ground_loop_(aviation)
Measurement of the strength of a gravitational field
responsible for its creation are of interest. The study of gravity changes belongs to geodynamics. Gravity is usually measured in units of acceleration. In the
Gravimetry
Aircraft undercarriage
taildragger, is a type of aircraft undercarriage (landing gear) consisting of two wheeled main gears forward of the center of gravity and a small wheel or
Conventional_landing_gear
Angle between each wing or tail surface within a pair
other aircraft parameters also have a strong influence on dihedral effect. Some of these important factors are: wing sweep, vertical center of gravity, and
Dihedral_(aeronautics)
Emergency procedure for aircraft to reduce weight
short of the intended destination (emergency landing) to reduce the aircraft's weight. Aircraft have two main types of weight limits: the maximum takeoff
Fuel_dumping
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REDUCED GRAVITY-AIRCRAFT