Lightning Bug | |
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Reflex Lightning Bug 2 at Sun-N-Fun 2007 | |
Role | Homebuilt aircraft |
National origin | United States |
Manufacturer | Reflex Fiberglass Works |
Designer | Nick Jones |
Introduction | 1990s |
Status | Production completed |
Number built | At least nine |
The Reflex Lightning Bug, also called the Jones Lightning Bug, is an American homebuilt aircraft that was designed by Nick Jones and produced by Reflex Fiberglass Works of Walterboro, South Carolina, introduced in the mid-1990s. When it was available the aircraft was supplied as a kit for amateur construction.[1]
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Can Bright Light Make You Sneeze?
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Mystery Bug - Solved!
Transcription
About one third of the people on Earth will tell you that this is a thing. The other two-thirds probably think that the first third is crazy, but they're too polite to say anything. But if you've ever walked out of dark matinee theater, or driven out of a long tunnel and into the sunlight, and then suddenly SNEEZED, you're probably experiencing one of medical science's least-understood-but-thankfully-harmless phenomena. It's known as photic sneezing -- or sneezing triggered by sudden exposure to bright light. And it happens to about 30 to 35 percent of us. So take that all you nay-sayers! It's real! But scientists don't know why. References to light-triggered sneezing show up in medical literature as far back as Aristotle. But modern researchers started looking into it more closely, when they realized that a poorly timed photic sneeze could pose a big problem for people like surgeons and airplane pilots. So far, the best we can figure is that light-triggered sneezing has to do with an interaction between overactive sensory nerves. A study in 2010, for instance, examined ten photic sneezers, as well as a control group. After exposing all of the subjects to bright, flashing light, the researchers found that the light triggered a lot more activity in the visual cortex of the photic sneezers' brains than in the control group. So it could just be that sneezers' sensitivity to light is just more excitable than in other people. But the prevailing theory has to do with a specific, complex nerve bundle called the trigeminal nerve, which is the biggest nerve in your head. It is responsible for all of the sensation in your entire face, from the tickle in your nose to the twitch in your eyebrows to that feeling of needing Chapstick. And parts of this nerve also sidle up nice and close to your optic nerves, which transmit the information your brain gets about light entering your eyes. So the theory is that a sudden flash of bright light stimulates the optic nerve, which sometimes also transmits an impulse to the nearby branches of the trigeminal nerve that connect to the nose and mouth. This impulse mimics the tickle of a nasal irritation, which then causes you to sneeze. So while we're not exactly sure about how it works, this scenario might explain why other weird things can trigger sneezing that also involve stimulating the trigeminal nerve -- like pulling hair, or plucking eyebrows. So if you're a photic sneezer, there's no need to hide it anymore. Be proud! Thanks for asking, especially to our Subbable subscribers who keep these answers coming! And if you have a quick question, let us know on Facebook and Twitter or in the comments below, and don't forget to go to YouTube.com/SciShow and subscribe!
Design and development
The Lightning Bug features a cantilever low-wing, a single-seat enclosed cockpit under a bubble canopy, fixed tricycle landing gear with wheel pants, a retractable nose wheel and a single engine in tractor configuration.[1]
The aircraft is made from a combination of stainless steel and fiberglass. Its 17.83 ft (5.4 m) span wing has a wing area of 40.00 sq ft (3.716 m2). The cabin width is 25 in (64 cm). The standard engine used is the 100 hp (75 kW) AMW 808 in-line three cylinder, liquid-cooled, two-stroke, dual ignition, aircraft engine. With that engine the aircraft can cruise at 225 mph (362 km/h).[1]
The Lightning Bug has a typical empty weight of 475 lb (215 kg) and a gross weight of 800 lb (360 kg), giving a useful load of 325 lb (147 kg). With full fuel of 23 U.S. gallons (87 L; 19 imp gal) the payload for the pilot and baggage is 187 lb (85 kg). The aircraft meets American FAR 23 aerobatic category requirements at a gross weight of 750 lb (340 kg).[1]
The standard day, sea level, no wind, take off with a 100 hp (75 kW) engine is 800 ft (244 m) and the landing roll is 1,000 ft (305 m), due to its 62 mph (100 km/h) stall speed.[1]
The manufacturer estimated the construction time from the supplied kit as 300 hours.[1]
Operational history
In February 2014 two examples were registered in the United States with the Federal Aviation Administration, although a total of nine had been registered at one time.[2]
Specifications (Lightning Bug)
Data from AeroCrafter[1]
General characteristics
- Crew: one
- Length: 17 ft 5.5 in (5.321 m)
- Wingspan: 17 ft 10 in (5.44 m)
- Wing area: 40.00 sq ft (3.716 m2)
- Empty weight: 475 lb (215 kg)
- Gross weight: 800 lb (363 kg)
- Fuel capacity: 23 U.S. gallons (87 L; 19 imp gal)
- Powerplant: 1 × AMW 808 in-line three cylinder, liquid-cooled, two-stroke, dual ignition, aircraft engine, 100 hp (75 kW)
- Propellers: 2-bladed wooden, fixed pitch
Performance
- Maximum speed: 250 mph (400 km/h, 220 kn)
- Cruise speed: 225 mph (362 km/h, 196 kn)
- Stall speed: 62 mph (100 km/h, 54 kn)
- Range: 880 mi (1,420 km, 760 nmi)
- Service ceiling: 20,000 ft (6,100 m)
- Rate of climb: 1,200 ft/min (6.1 m/s)
- Wing loading: 20.0 lb/sq ft (98 kg/m2)
See also
References
- ^ a b c d e f g Purdy, Don: AeroCrafter - Homebuilt Aircraft Sourcebook, Fifth Edition, page 242. BAI Communications, 15 July 1998. ISBN 0-9636409-4-1
- ^ Federal Aviation Administration (February 6, 2014). "Make / Model Inquiry Results". Retrieved February 6, 2014.