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Characteristic of rocket engine nozzles
Thrust coefficient or c F {\displaystyle c_{F}} (sometimes c τ {\displaystyle c_{\tau }} ) is a dimensionless number that measures the performance of a
Thrust_coefficient
Physical property
coefficient of power, ρ {\displaystyle \rho } is the air density, A is the area of the wind turbine, and V is the wind speed. The thrust coefficient is
Wind-turbine_aerodynamics
Type of propelling nozzle
The typical high level goal in nozzle design is to maximize its thrust coefficient C F {\displaystyle C_{F}} , which acts as a strong multiplier to the
Rocket_engine_nozzle
Measure of rocket performance
acceleration at sea-level (m/s2). C F {\displaystyle C_{F}} is the thrust coefficient. c {\displaystyle c} is the effective exhaust velocity (m/s). γ {\displaystyle
Characteristic_velocity
Rocket engine nozzle shape
is to contour the nozzle to avoid oblique shocks and maximize the thrust coefficient (a measure of performance). In his classic textbook, George P. Sutton
Bell_nozzle
Change in velocity per amount of fuel
combustion-chamber performance into a quantity with units of speed, and a thrust coefficient C F {\displaystyle C_{F}} , which is a dimensionless quantity that
Specific_impulse
Non-airbreathing engine used to propel a missile or vehicle
propellants and combustion efficiency) C f {\displaystyle C_{f}} = the thrust coefficient of the nozzle (dependent on nozzle geometry, typically about 2) And
Rocket_engine
Movement of an object through air
achieved by generating aerodynamic lift associated with gliding or propulsive thrust, aerostatically using buoyancy, or by ballistic movement. Many things can
Flight
Force resisting the motion when a body rolls on a surface
expressed as a coefficient times the normal force. This coefficient of rolling resistance is generally much smaller than the coefficient of sliding friction
Rolling_resistance
Type of ship propulsion system
the ship. According to the Cousteau Society, "when compared to the thrust coefficient of the best sails ever built (Marconi or square types, i.e. ships
Turbosail
Sub-class of turbomachinery
coefficient becomes of secondary importance, and the speed coefficient of tertiary importance. It may be found interesting that the speed coefficient
Centrifugal_compressor
rotor having a rectangular blade planform. For example, when rotor thrust coefficient is assumed to be constant, the weighing function comes out to be:
Rotor_solidity
velocity limited by thermal capability of combustion chamber material, Thrust coefficient limited by supersonic area ratio of the expansion nozzle. To protect
Liquid_apogee_engine
Engines placed along the wingspan of a plane
Increased thrust coefficient. Direct reenergizing of the boundary layer. Vortex and Flow separation control. Flight control and vectored thrust. Several
Distributed_propulsion
Science of air vehicle orientation and control in three dimensions
direction of the force of thrust is generally fixed in the body frame, though some aircraft can vary this direction, for example by thrust vectoring. The wind
Aircraft_flight_dynamics
Anti-stalling high-lift device on aircraft
drag coefficient of the aircraft. Therefore, for any given weight and airspeed, flaps increase the drag force. Flaps increase the drag coefficient of an
Flap_(aeronautics)
Launch system that only uses one rocket stage
excess thrust of the hydrogen engines due to the lower thrust/weight ratio means that the vehicle must ascend more steeply, and so less thrust acts horizontally
Single-stage-to-orbit
Hydrodynamics of screw propellers
{1}{2}}\rho V^{2}A}} where CL and CD are lift coefficient and drag coefficient respectively. Each coefficient is a function of the angle of attack and Reynolds
Propeller_theory
The coefficients used for moment are similar to coefficients of lift, drag, and thrust, and are likewise dimensionless; however, these must include a characteristic
Coefficient_of_moment
Measure of aerodynamic efficiency
ratio while maintaining altitude. Lift coefficient Range (aeronautics) range depends on the lift/drag ratio. Thrust specific fuel consumption the lift to
Lift-to-drag_ratio
Jet engine where combustion takes place in supersonic airflow
Where: ϕ e {\displaystyle \phi _{\text{e}}} is the loss coefficient F {\displaystyle F} is the thrust of the engine For an engine strongly integrated into
Scramjet
6.8×51mm rifle cartridge by SIG Sauer
described as "Next Gen Ammunition, Magnum Performance", G1 ballistic coefficient (BC) of 0.330. SIG describes this ammunition as the one developed for
.277_Fury
Simplest type of bearing, with no rolling elements
shaft or any other two mating surfaces (e.g., a slide plate). Thrust bearing: A thrust bearing provides a bearing surface for forces acting axial to the
Plain_bearing
Machine for continuous flow gas compression
may be shown by plotting stage loading coefficient ( ψ {\displaystyle \psi \,} ) as a function of flow coefficient ( ϕ {\displaystyle \phi \,} ) Stage pressure
Axial_compressor
Relationship between drag on an aircraft and other variables
between the drag on an aircraft and other variables, such as lift, the coefficient of lift, angle-of-attack or speed. It may be described by an equation
Drag_curve
American rocket engine family used on Titan missile first stages
cycle and utilized a regeneratively cooled combustion chamber. For each thrust chamber assembly, a single high-speed turbine drove the lower-speed centrifugal
Aerojet_LR87
Swimming stroke
forward thrust. The resulting drag coefficient (or more precisely the frontal area) is thus doubled in the thrust phase. A fit adult creates a wake. Drag
Breaststroke
Theory in propeller or turbine physics
Buhl, M.L. Jr. (2005-08-01). "New Empirical Relationship between Thrust Coefficient and Induction Factor for the Turbulent Windmill State": NREL/TP–500–36834
Blade_element_momentum_theory
In physics, two bodies contacting each other
quantified by the coefficient of restitution, a value that generally ranges between zero and one. A perfectly elastic collision has a coefficient of restitution
Collision
Screw used as a linkage in a mechanism
coefficient of friction between the collar on the load and d c {\displaystyle d_{\text{c}}} is the mean collar diameter. For collars that use thrust bearings
Leadscrew
Increased aircraft lift generated when close to fixed surface
can cause suckdown and fountain lift on the airframe and loss in hovering thrust under hot gas ingestion (HGI) when the engine sucks in its own exhaust gas
Ground_effect_(aerodynamics)
Scale model a hydrodynamic test to predict full size behaviour
water for model KTM, KTS = thrust coefficient of the model and ship propeller respectively KQM, KQS = torque coefficient of the model and ship propeller
Ship_motion_test
American strategic bomber aircraft
pounds-force (39 kN) of static thrust each. The B-52A models were equipped with Pratt & Whitney J57-P-1W turbojets, providing a dry thrust of 10,000 pounds-force
Boeing_B-52_Stratofortress
Service rifle cartridge
long-range performance due to higher sectional density and a superior drag coefficient. The .223 Remington cartridge inspired an international tendency toward
5.56×45mm_NATO
device – Cockpit – Cockpit culture – Cockpit voice recorder – Coefficient of lift – Coefficient of moment – Cold temperature airport – Collective – Commercial
Index_of_aviation_articles
Total mass divided by area of wing
v^{2}AC_{L},} where ρ is the density of air, and CL is the lift coefficient. The lift coefficient is a dimensionless number that depends on the wing cross-sectional
Wing_loading
Equestrian sport and art
segments are given increased weight by the use of a multiplier, or coefficient. Coefficients are typically given a value of 2, which then doubles the marks
Dressage
American theoretical physicist (1904–1967)
photoelectric effect for hydrogen and X-rays, obtaining the absorption coefficient at the K-edge. His calculations accorded with observations of the X-ray
J._Robert_Oppenheimer
Vehicle dynamics terms
lateral and longitudinal forces, a function of the normal force and coefficient of friction. If the lateral and longitudinal forces presented at the
Understeer_and_oversteer
Association football club in England
were the first English club to be ranked No. 1 under UEFA's five-year coefficient system in the 21st century. They were the first Premier League team,
Chelsea_F.C.
Abrupt reduction in lift due to flow separation
In fluid dynamics, a stall is a reduction in the lift coefficient generated by a foil as angle of attack exceeds its critical value. The critical angle
Stall_(fluid_dynamics)
requires a smaller flow coefficient (because of the Brumfield criterion); which necessitates either a reduction in flowrate (engine thrust), an overall larger/heavier
Inducer_(pump_component)
Cold War-era American jet bomber
weight: 221,000 lb (100,244 kg) Zero-lift drag coefficient: 0.0148 (estimated) zero-lift drag coefficient area: 21.13 ft2 (1.96 m2) Powerplant: 6 × General
Boeing_B-47_Stratojet
Airliner faster than the speed of sound
Around Mach 1, the peak coefficient of drag is four times that of subsonic drag. Above the transonic range, the coefficient drops drastically again,
Supersonic_transport
Airplane
center of gravity, and 23-degree angle of attack (2° beyond the maximum coefficient of lift). Stall testing was repeated on September 11 with a NASA pilot
Boeing_X-48
Concept in aerodynamics
Mach number continues to increase. This increase can cause the drag coefficient to rise to more than ten times its low-speed value. The value of the
Drag-divergence_Mach_number
Ring-shaped covering around a wheel's rim
braking tests are necessary for data beyond generalizations. Camber thrust: Camber thrust and camber force are the force generated perpendicular to the direction
Tire
— Tether propulsion — Thermal protection system — Thermodynamics — Thrust — Thrust vector control — Thruster — Torricelli's equation — Trajectory — Trailing
Index of aerospace engineering articles
Index_of_aerospace_engineering_articles
British naval fighter-bomber aircraft from the Cold War era
thickness being increased from seven to nine percent for a higher lift coefficient, while the wing's area was also expanded. The Type 508 was the first
Supermarine_Scimitar
Mathematical process by William Froude
resultant force coefficient for the entire airfoil of aspect ratio 6 is considerably lower. It is natural, then, that the calculated thrust and power of
Blade_element_theory
plastics. The applied normal force and the torque are measured, and the coefficient of friction is calculated. Although the twist-compression test does not
Twist_compression_tester
Sport
The award is based on a formula which employs the "Sinclair coefficient", a coefficient derived and approved by the sport's world governing body, which
Olympic_weightlifting
Third generation of the BMW 5 Series
attention was paid to aerodynamics, with the E34 basic saloon having a drag coefficient of 0.30. Series production began in November 1987.[citation needed] In
BMW_5_Series_(E34)
Miniature satellite in 10 cm cube modules
Gimbaled thrust cannot be used in small engines due to the complexity of gimbaling mechanisms, thrust vectoring must instead be achieved by thrusting asymmetrically
CubeSat
PDW cartridge designed for HK MP7
penetration. The muzzle velocity V0 and V100 indicate a G1 ballistic coefficient of approximately 0.141 to 0.150 (BCs are somewhat debatable) making the
HK_4.6×30mm
Single-stage-to-orbit spaceplane
compared to other vehicles due to a low ballistic coefficient. Because of the low ballistic coefficient, Skylon would be slowed at higher altitudes where
Skylon_(spacecraft)
DuPont high-performance plastics brand
wear resistance, lower friction, improved dimensional stability (low coefficient of thermal expansion), and stability against oxidation. Example: Vespel
Vespel
1955 naval fighter aircraft by Vought
afterburner increased the engine's thrust from 10,200 lb to 16,000 lb, but, unlike later engines, lacked any intermediate thrust settings. The armament of the
Vought_F-8_Crusader
Retarding force on a body moving in a fluid
attack increases (up to a maximum called the stalling angle), the lift coefficient also increases, and so too does the lift-induced drag. At the onset of
Drag_(physics)
Vehicle propelled by ejection of gases
accelerate without using any surrounding air. A rocket engine produces thrust by reaction to exhaust expelled at high speed. Unlike jet engines, rockets
Rocket
Measurement indicator of fuel conversion
into thrust. One key metric of performance is the thermal efficiency; how much of the chemical energy (fuel) is turned into useful work (thrust propelling
Jet_engine_performance
Type of geocentric orbit
{J_{2}R_{\text{E}}^{2}}{p^{2}}}\cos i,} where J2 = 1.08263×10−3 is the coefficient for the second zonal term related to the oblateness of the Earth; RE
Sun-synchronous_orbit
Jet damping or thrust damping is the effect of rocket exhaust removing energy from the transverse angular motion of a rocket. If a rocket has pitch or
Jet_damping
Ratio of freestream speed to tip speed
The propeller advance ratio or coefficient is a dimensionless number used in aeronautics and marine hydrodynamics to describe the relationship between
Advance_ratio
Chinese military intermediate cartridge
95 LSW (557 mm (21.92 in) barrel length). The bullet has a ballistic coefficient (G7 BC) of approximately 0.156. The DBP87 cartridge has an operating
5.8×42mm
Megathrust earthquake off Japan's east coast
coupling coefficient is high, which could act as the source of the large tsunami. Most of the foreshocks are interplate earthquakes with thrust-type focal
2011 Tōhoku earthquake and tsunami
2011_Tōhoku_earthquake_and_tsunami
Pressure of soil in horizontal direction
Muller-Breslau's equations to account for a nonplanar rupture surface. The coefficient of lateral earth pressure, K, is defined as the ratio of the horizontal
Lateral_earth_pressure
Device that transmits rotational power into linear thrust on a fluid
linear thrust upon a working fluid such as water or air when rotated. Propellers are used to pump fluid through a pipe or duct, or to create thrust to propel
Propeller
Antarctic ice runway
science activities. Because of ice's low coefficient of friction, planes tend to decelerate with reverse thrust, as opposed to traditional means of braking
Blue_ice_runway
Battery-electric full-size car
for two children with a five-point harness. The company claimed a drag coefficient of Cd=0.24, the lowest of any production car at release. This claim was
Tesla_Model_S
American full-size car
traveling at 101 mph (163 km/h). The ninth generation Impala has a drag coefficient of 0.33. Available trim levels at the time of introduction of the ninth
Chevrolet_Impala
US Air Force supersonic fighter-bomber
potent J57-P-25 engine with 15,000 pounds-force (67 kN) of afterburning thrust, the first prototype attained the speed of Mach 1.2 on its maiden flight
Republic_F-105_Thunderchief
Soviet rimless intermediate cartridge
range or "battle zero" characteristics and produce relatively low bolt thrust and free recoil impulse, favouring lightweight arms design and automatic
5.45×39mm
Aerodynamic device
the under surface of the wing, increasing the wing camber and maximum coefficient of lift. It produces a nose-up pitching moment. Conversely, slats extend
Krueger_flap
Aircraft which use flapping movement of the wings to generate lift
and thrust. Ornithopters with thinner wings have a limited angle of attack but provide optimum minimum-drag performance for a single lift coefficient. Although
Ornithopter
Gas-turbine powered vehicle used to set a world land speed record
successful gas turbine engine design, and delivered 4,450 shp (3,300 kW) with no thrust allowed by the FIA, exhaust was limited to fill in aerodynamic disturbance
Bluebird-Proteus_CN7
England international rugby union footballer
heavy bodyweight meant that smaller athletes would always win using the coefficient system. He could also have used a little luck – a puncture right at the
Andy_Ripley
Device which reduces sound intensity or muzzle flash on a firearm
significantly prolong the time of the gas release and thereby decrease the rearward thrust generated, as for the same impulse, force is inversely proportional to time
Silencer_(firearms)
Application of mechanical dynamics to model the flight of space vehicles
direction of flight. Lift and drag are modeled as the products of a coefficient times dynamic pressure acting on a reference area: L = C L q A ref {\displaystyle
Spacecraft_flight_dynamics
Japanese sports car
at maximum speed. With the wing retracted the LFA's body has a drag coefficient of Cd=0.31. The LFA body was offered with a choice of 28 standard exterior
Lexus_LFA
Aircraft fuel efficiency
improved engine brake-specific fuel consumption and propulsive efficiency or thrust-specific fuel consumption. Endurance and range can be maximized with the
Fuel_economy_in_aircraft
Car model
1999. The exterior was redesigned, achieving a more aerodynamic drag coefficient of 0.30, and the revised interior featured new door panels and seats
Cadillac_de_Ville_series
American heavy military transport aircraft
divergence Mach number than predicted by wind tunnel data. The maximum lift coefficient measured in flight with the flaps deflected 40° was higher than predicted
Lockheed_C-5_Galaxy
Behavior of projectiles in flight
projectile are gravity, drag, and if present, wind; if in powered flight, thrust; and if guided, the forces imparted by the control surfaces. In small arms
External_ballistics
Four-engined twin-aisle airliner family
Differences include four 151 kN (34,000 lbf) CFM56s instead of two high-thrust turbofans to bypass ETOPS restrictions on trans-oceanic routes, and a three-leg
Airbus_A340
Study of health and disease within a population
of Southern California article noted that, "The coronavirus epidemic... thrust epidemiology – the study of the incidence, distribution and control of disease
Epidemiology
Perpendicular-axis marine propulsion system
increasing the maximum blade lift coefficient at low Reynolds numbers. The two effects are correlated with increasing thrust. Compared to a helicopter or any
Cyclorotor
Exploration of subsurface properties with seismology
multiplying the amplitude of the incident wave by the seismic reflection coefficient R {\displaystyle R} , determined by the impedance contrast between the
Reflection_seismology
Seventh generation of Mercedes-Benz S-Class
to the wheel arches and underbody to improve airflow and has a drag coefficient of 0.22. At the launch, Mercedes-Benz announced that its V12 engine would
Mercedes-Benz_S-Class_(W223)
Main phase of level aircraft flight
where the higher ground speed is balanced against the decrease in engine thrust and efficiency at higher altitudes. Common narrowbodies like the Airbus
Cruise_(aeronautics)
ranks third in the world in total number of billionaires. India's Gini coefficient fell to 25.5 by 2023, making it the fourth-most equal country globally
Economy_of_India
Aircraft takeoff and landing using conventional runways
proceed, the aircraft engines power up and the aircraft, propelled by engine thrust, begins accelerating down the runway in a takeoff roll with its landing
CTOL
Various methods robots use to transport themselves
It has been proven that a flexible membrane possesses a higher lift coefficient than rigid plates and delays the angle of attack at which stall occurs
Robot_locomotion
Rifle cartridge
utilize long, heavy-for-caliber bullets due to their superior ballistic coefficients. Steel is generally significantly stronger than brass; steel has tensile
7mm_Backcountry
Executive car series produced by Audi
BMW 5 Series and the Mercedes-Benz E-Class. The redesigned body had a coefficient of drag of 0.28. In 2000 and 2001, the "C5" A6 was on Car and Driver
Audi_A6
Rocket engine that uses both liquid / gaseous and solid fuel
liquid rocket engines, hybrid rocket motors can be shut down easily and the thrust is throttleable. The theoretical specific impulse ( I s p {\displaystyle
Hybrid-propellant_rocket
Car model
manual or a three-speed automatic with lock-up torque converter. Drag coefficient was 0.39 for the coupe and 0.40 for 2- and 4-door sedans. At the time
Nissan_Sentra
Machine used to produce air flow
comfort inside a room create a wind chill by increasing the heat transfer coefficient but do not lower temperatures directly. Fans used to cool electrical
Fan_(machine)
Type of aerodynamic resistance against the motion of a wing or other airfoil
symbolized as D i {\textstyle D_{\text{i}}} , and the lift-induced drag coefficient as C D , i {\textstyle C_{D,i}} . For a constant amount of lift, induced
Lift-induced_drag
Process of modeling orbits
gravitational attraction from tertiary bodies, air resistance, solar pressure, or thrust from a propulsion system are typically modeled as secondary effects. Directly
Orbit_modeling
THRUST COEFFICIENT
THRUST COEFFICIENT
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THRUST COEFFICIENT