uncleflo
Registered since September 28th, 2017
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custom made heavy duty Multi rotor motor high voltage power plant protection UAV version drone Mapping in Agriculture-in Parts & Accessories from Toys & Hobbies on AliExpress
Saved by uncleflo on December 22nd, 2019.
Model (Motor Type) KV15; Motor Size Motor Size(mm) φ202*150; Weight(g) 12000; Torque (nM) 130; Speed (RPM) 4500; Max Continuous Current(A) 250; Max Continuous Power(W) 80000; Continous power(W) 45000; Max Pulling Force(g) 180000; Suitable for ESC 144v 400A; SHAFT: 20mm; SLOT:36; POLES: 20 (40 MAGANET)
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custom made heavy duty Multi rotor motor high voltage power plant protection UAV version drone Mapping in Agriculture-in Parts & Accessories from Toys & Hobbies on AliExpress
Saved by uncleflo on December 22nd, 2019.
(Motor Type) KV<40; Motor Size(mm) φ240*150; Weight(g) 16000; Torque (nM) 150; Speed (RPM) 6000; Max Continuous Current(A) 400; Max Continuous Power(W) 100000; Continous power(W) 55000; Max Pulling Force(g) 250000; Suitable for ESC Suit for ESC 400V 250A /200V 500A; MOTOR: H240150; SIZE: 240x 150( without shaft )
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10KW Brushless Sailboat Kit
Saved by uncleflo on December 19th, 2019.
Convert your 12-29 HP diesel engine to clean, quiet electric. Eliminate noxious diesel fumes and the frustration of filling up at the pump with the 10KW Brushless Kit featuring a Motenergy brushless motor and a 48V 450 Amp Sevcon Gen-4 Controller that can produce up to 10HP continuous and 28HP peak! Enjoy your sailboat to the fullest, with a silent drive and truly fresh air. This system is recommended for boats up to 12,000 pounds displacement. All our systems have reverse on-the-fly and contactor disable features. "Brushless" means that the motor does not have brushes that will wear out over time, nor will it be a dangerous source of ignition for on-board gas appliances. Larger boats may require a higher power AC or brushless motor. In the U.S. and Canada, brushed motors are only legal for marine use if onboard appliances and accessories use kerosene or diesel (not propane or gasoline) due to the potential for internal motor arcing.
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Jet Engine PBS TJ100 - PBS
Saved by uncleflo on August 26th, 2019.
Its advantage is its compact design, low weight with a thrust of up to 1,300 N, and low fuel consumption in the given power category. The generator output is 750 W. One of the PBS TJ100 engine versions enables landing on water. The PBS TJ100 engine is a single-shaft jet engine consisting of a radial compressor, radial and axial diffuser, annular combustion chamber, axial turbine and a fixed outlet nozzle. The PBS TJ100 jet engine was developed for UAVs, missiles, light sport aircraft and gliders with an additional engine. We have delivered hundreds of our jet engines for manned experimental aircrafts and unmanned aircrafts all around the world.
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Interactive Nozzle Simulator
Saved by uncleflo on September 2nd, 2014.
With this software you can investigate how a turbojet or rocket nozzle produces thrust by changing the values of different factors that affect thrust. By changing the shape of the nozzle and the flow conditions upstream and downstream, you can control both the amount of gas that passes through the nozzle and the exit velocity. There is another version of this program that has been modified for rocket nozzles. With the rocket version, you can specify a wider variety of propellant combinations.
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Nozzle Design
Saved by uncleflo on September 2nd, 2014.
A rocket engine uses a nozzle to accelerate hot exhaust to produce thrust as described by Newton's third law of motion. The amount of thrust produced by the engine depends on the mass flow rate through the engine, the exit velocity of the flow, and the pressure at the exit of the engine. The value of these three flow variables are all determined by the rocket nozzle design.
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Air-augmented rocket - Wikipedia, the free encyclopedia
Saved by uncleflo on September 2nd, 2014.
Air-augmented rockets (also known as rocket-ejector, ramrocket, ducted rocket, integral rocket/ramjets, or ejector ramjets) use the supersonic exhaust of some kind of rocket engine to further compress air collected by ram effect during flight to use as additional working mass, leading to greater effective thrust for any given amount of fuel than either the rocket or a ramjet alone. It represents a hybrid class of rocket/ramjet engines, similar to a ramjet, but able to give useful thrust from zero speed, and is also able in some cases to operate outside the atmosphere, with fuel efficiency not worse than both a comparable ramjet or rocket at every point.
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NPTEL Principles of Rocket Propulsion
Saved by uncleflo on July 16th, 2014.
A video course shall consist of 40 or more lectures with 1 hour duration per lecture.
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SR-71 J-58 Powerplant
Saved by uncleflo on June 20th, 2014.
The SR-71 Blackbird is powered by two Pratt & Whitney J-58 turbo-ramjets, each developing 32,500 pounds of thrust with afterburning. The critical problems concerning supersonic flight with air breathing engines are concentrated in the air inlet area. The circular air intakes of the SR-71 contain a center body tipped with a conical spike. The spike is movable, forward for takeoff and climb to 30,000 feet after which, as speed builds up, it moves rearward, controlling the amount of air entering the engine. As it does so, Air Inlet Bypass Doors in the side of the nacelle close to establish the correct flow of air through the engine, holding the supersonic shock wave in it's critical position within the inlet. The engine itself operates at subsonic speed.
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The SR-71 Pratt & Whitney JT11D-20B J58 Engine
Saved by uncleflo on June 20th, 2014.
The SR-71 Blackbird is powered by two Pratt & Whitney J-58 turbo-ramjets, each developing 32,500 pounds of thrust with afterburning. The critical problems concerning supersonic flight with air breathing engines are concentrated in the air inlet area. The circular air intakes of the SR-71 contain a center body tipped with a conical spike. The spike is movable, forward for takeoff and climb to 30,000 feet after which, as speed builds up, it moves rearward, controlling the amount of air entering the engine. As it does so, Air Inlet Bypass Doors in the side of the nacelle close to establish the correct flow of air through the engine, holding the supersonic shock wave in it's critical position within the inlet. The engine itself operates at subsonic speed.
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