Plasma use for improved flow over the wings
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Plasma use for improved flow over the wings
there is an interesting article on experiments in flow control over wing front and rear edges using plasma. Serious optimization effects are quoted.
Would be like commercialized use of St.Elmo's fire type effects.
Lately there is a lot of interest in plasma - possibly generated by successful implementation of plasma devices as promoted by Dr Keshe open designs published by his keshefoundation.org
Would be like commercialized use of St.Elmo's fire type effects.
Lately there is a lot of interest in plasma - possibly generated by successful implementation of plasma devices as promoted by Dr Keshe open designs published by his keshefoundation.org
The power of such a fundamental approach was highlighted by a recent NASA-funded demonstration project in which Corke’s team at Notre Dame succeeded in deploying plasma actuators to suppress what he describes as “an important near-surface flow instability” that aerodynamicists know presages the onset of deleterious turbulence and drag.
Corke and his team reported that the wind tunnel test item, which used “new actuators that developed 20 times more thrust while consuming 100 times less power, produced a 65% drag reduction.” The Notre Dame researchers have found that introducing a small oscillation whose waves move perpendicular to the air flow path can halt the onset of the so-called near-surface flow instabilities that lead to turbulence.
The results, when scaled up, could be impressive. “I ran the numbers for an aircraft design the size of a Predator UAV on a computer,” Corke says. “If you put plasma actuators on one, it could extend its range by 300% and its endurance from 24 to 36 hours.” NASA has awarded the group a Phase 2 R&D contract, and now DARPA is said to be interested in the novel technology, which has since been patented and licensed to a start-up company.
Corke and his team reported that the wind tunnel test item, which used “new actuators that developed 20 times more thrust while consuming 100 times less power, produced a 65% drag reduction.” The Notre Dame researchers have found that introducing a small oscillation whose waves move perpendicular to the air flow path can halt the onset of the so-called near-surface flow instabilities that lead to turbulence.
The results, when scaled up, could be impressive. “I ran the numbers for an aircraft design the size of a Predator UAV on a computer,” Corke says. “If you put plasma actuators on one, it could extend its range by 300% and its endurance from 24 to 36 hours.” NASA has awarded the group a Phase 2 R&D contract, and now DARPA is said to be interested in the novel technology, which has since been patented and licensed to a start-up company.
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Fascinating theory, proven in the wind tunnel. I would, however, prefer to have some standby control surfaces of the traditional kind available for those times when the electrons are not being properly herded.
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correct yet with development via wind tunnel we are close to the coffins corner - not much freedom's left
with plasma we may break some boundaries and get a leap type progress - after all the known UFOs fly without wings afaik
with plasma we may break some boundaries and get a leap type progress - after all the known UFOs fly without wings afaik
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Fascinating theory, proven in the wind tunnel.
Since you cannot have a full scale aircraft, and cannot have the full weight of the aircraft and associated lift, there is little that is accomplished other than proving calculations that are based on the calculations. In reality, since the foundation of the calculations are the calculations, if they did not prove themselves...well.
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Wind tunnel has no basis in reality. The common thought that air flow can be scalable, without the effects of the weight of the aircraft and associated lift, is simply outlandish
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Originally Posted by underfire
Wind tunnel has no basis in reality.
A lot comments here don't either.
Quick, somebody call NASA and tell them their wind tunnel tests are all fantasy. Heaven forbid they fly a plane or rocket based on wind tunnel results.
