In order to provide for a reasonable homepage loading time, it is impractical to just keep adding items to the top of the stack and keep all the old stuff there too. Therefore, I have created these Airplanes and Rockets Homepage Archives to maintain a historical snapshot of everything once on the homepage. Unfortunately, I did not think to keep a record until around Fall of 2009; I had just been deleting items from the bottom of the stack. No more, though. Hence forth, if you recall seeing something on the homepage but it is no longer there, please check out these archive pages. I also keep an archive of all the modeling news additions:
Homepage Additions Archive:
Modeling News Archive:
Cox A-1 Skyraider from the 1969
Montgomery Ward Christmas Catalog
Here on page 378 of the Montgomery Ward 1969 Christmas catalog are three .049-powered Cox models - the Douglas A-1 Skyraider control line airplane, the California Dune Buggy, and the wild Shrike Air Car. The $13.66 price for the California Dune Buggy in 1969 is the equivalent of $88.34 in 2015 according to the U.S. Bureau of Labor Statistics' inflation calculator ...
More... About Stunt Theory
It would be interesting to do a side-by-side comparison on what was considered engineered control line stunt model airplane design in 1957, when this article was written, to what is today considered to be optimal design criteria. I am trying to get back into control line stunt flying and have one model built currently, the Enterprise-E. It has been flown a few times and is (was) extremely sensitive on the controls when set up per the plans. A little bit of control handle movements resulted in a huge amount of both elevator and flap deflection. Fortunately, access to the flap control horn is available through the removable top fuselage hatch, so I was able to relocate the pushrod from the bellcrank to the flap horn, and then from the flap horn to the elevator control horn. Overall throws are a little more than half what ...
Woo-Hoo! SpaceX Makes 1st Successful
Vertical Soft Landing at Cape Canaveral
"SpaceX sent a Falcon rocket soaring toward orbit Monday night with 11 small satellites, its first mission since an accident last summer. Then in an even more amazing feat, it landed the 15-story leftover booster back on Earth safely. It was the first time an unmanned rocket returned to land vertically at Cape Canaveral, Florida, and represented a tremendous success for SpaceX. The company led by billionaire Elon Musk is striving for reusability to drive launch costs down and open up space to more people. SpaceX employees broke into cheers and chants, some of them jumping ..."
A Scouting Crossword Puzzle
Prolific crossword puzzle creator Eugene Sheffer is somewhat of a mystery on the Internet. His name appears in the by-line of crosswords dating back at least into the 1930s, while also appearing in contemporary crosswords. A little investigation suggests that Mr. Sheffer died in 1981, but that King Syndicate owns the right to the 'By Eugene Sheffer' and still uses it today. I was not able to locate a biography of Eugene Sheffer, and he does not even have an entry in Wikipedia. Some forum posters question whether there ever was a 'real' Eugene Sheffer. Regardless, one place his (or its') crossword puzzles were printed was in Boys' Life magazine, published ....
Apollo 8 Enters Orbit Around Moon
on Christmas Eve 1968
On Christmas Eve of 1968, while war was being waged in Vietnam against the forces of Communism on Earth, Apollo 8 astronauts Frank F. Borman, II, James A. Lovell, Jr., and William A. Anders maneuvered their spacecraft into orbit around the moon. Launched three days earlier on December 21, they became the first manned spacecraft to leave Earth orbit, orbit the moon, and return safely to Earth. The image below is the front page of my hometown newspaper, the Evening Capital, published in Annapolis, Maryland. My father, Arthur Blattenberger, was manager of the classified advertising department ...
'Drone' Registration with
the FAA Begins Today
Actually, the title of this and other news stories is very misleading regarding exactly what has to be registered. The generally uninformed or marginally informed public believes the definition of a 'drone' is anything that flies without a human pilot in the cockpit. It associates the greatly dramatized and sensationalized reports of public encounters with what are technically classified as Unmanned Aerial Systems (UAS) - multirotor copters. These are for the most part the variety sold in toy stores ranging in cost and complexity from $50 for a basic 4-propeller 'quadcopter' to $500 for a 6-propeller model with an onboard camera and maybe even a First Person View (FPV) wireless system that allows the pilot to fly from a vantage point on the craft while remaining at a remote ...
Flying the Icon A5, an Almost Affordable Personal Plane
"As we cut through the skies over the Hudson River and traced a loop around the Statue of Liberty, I spent as much time glancing down at the instrument cluster as I did peering out the window. That might seem like a huge waste of time given the views I was taking in but I couldn't help it: It's not often I wind up in the cockpit of a plane looking at dials and readouts, much less ones that make sense to me. That's because a pilot and I were tooling around in an Icon A5, a $189,000 "light sport" amphibious aircraft that's eager to shrug off the complexity of cheap aviation. After nearly ten years of development ..."
Parole Plaza in Annapolis, Maryland
Maybe it's a part of crossing the half-century age mark, but for the last few years I have been busy collecting memorabilia from my younger days in the Mayo, Maryland area (114 River Road, Holly Hill Harbor, to be exact). In the pre-smartphone era, very few pictures were taken because of the inconvenience of carrying cameras and the expense of developing and printing the photographs. Millennials, in contrast, will grow into old age with in some cases a day-by-day archiving of their lives thanks to parents, friends, and themselves taking thousands and maybe even millions of digitally recorded still shots and movie recordings from cradle to grave. Not having come from a ...
Northrop Unveils Sixth Gen
"Northrop Grumman unveiled its vision of the so-called sixth-generation fighter, showing reporters a laser-firing aircraft that looks like a cross between the B-2 bomber and the X-47B drone. Chris Hernandez, Northrop's vice president for research, technology and advanced design, laid out the basic parameters for the sixth-gen fighter (Northrop refers to it as NG Air Dominance): it must boast long range because it’s unlikely to have many bases to operate from overseas; it must 'carry a lot of weapons;' survivability will be key. What do those requirements and physics lead you to? 'This looks a lot like a baby B-2 and this is really ..."
Airplanes and Rockets website visitor Mike C. wrote to ask that I post this article on Ken Willard's pair of pseudo-WWI biplane fighters - the Fokker Heinschmitt and the Bristol Spadport. Mike built the Spadsport back in 1974 when the article first appeared in American Aircraft Modeler, and means to build the both of them this time - four decades later now that funds are flowing a bit more freely. A vintage OS Max FP engine will provide power - just like on the originals. Hopefully, he'll send a photo or two of his completed models for posting here. The foam wings came from Ace RC and had a 35" span with a chord of 5.5". The airfoil was semi-symmetrical. Both tapered and constant chord types were available ...
The Computer That Took
Man to the Moon
"During the 1960s, computers occupied whole rooms, but had less power than the PC now sitting in the den of your home. There weren't even pocket calculators back then. At the top of the Saturn was the Apollo spacecraft. And one of the most important components inside of the Saturn was its guidance computer. As Charles Murray and Catherine Bly Cox noted in their seminal classic Apollo: The Race to the Moon, 'The computer capacity of the mainframes in the Control Center [of NASA's Manned Spacecraft Center in Houston] was smaller than that of the desktop systems of the 1980s, and onboard computers in the command and lunar modules had less capacity than some pocket calculators ..."
Have You Seen Them Before?
These are close-up photos of common household objects. Your mission, should you decide to accept it, is to identify each one. Most are fairly easy, but a couple are a little outdated since they appeared in a 1939 edition of Boys' Life magazine. Answers are way down at the bottom of the page ...
January 1939 Boys' Life: This Is the
Issue Shown in A Christmas Story
This January 1939 Boys' Life magazine is the one Ralphie Parker is reading in the movie A Christmas Story. In the movie, a full-page Red Ryder BB gun advertisement is shown on the back cover, but the ad was a fake made for the movie. The real back cover had a Baby Ruth candy bar advertisement ...
TriStar Helicopter Listed on eBay
A really nice example of an original DuBro TriStar helicopter was just listed on eBay for $800. That's way above my budget amount, so I'll have to be satisfied with posting the photos (credit to mrknock) that accompanied the listing. This TriStar looks to be in like-new condition, and includes an engine but no radio. I'm still open to a donation or affordable price for an TriStar in just about any condition as long as it's repairable. Of course if some kind soul were to buy this and donate it ...
Terrafugia Takes Unmanned Turn
"Terrafugia is still working to bring the Transition, its first "street legal aircraft," to market, but moving forward in the meantime with the next big thing at a scaled-down size. The final Transition conforming prototype is slated to be tested in 2016 and 2017, and Terrafugia engineers are meanwhile tweaking the design for the TF-X, which aims to be capable of vertical takeoff and landing, thrust provided by articulating engine pods that rotate between hover and cruise positions. Before strapping a test pilot in, they will try R/C first ..."
'Twas the Night Before the Contest
In the December 2015 issue of Model Aviation, "Sky's the Limit" columnist Jennifer Lea Reynolds wrote a 'Twas the Night Before Christmas" takeoff titled "'Twas the Night Before an RC Pilot's Wish List." I cannot replicate it here since it is currently copyrighted material; however, what I can post is a similar piece titled "'Twas the Night Before the Contest" that appeared in the November 1948 edition of Air Trails. Enjoy! ...
Boeing 747 'Cosmic Girl' to Be Mothership for LauncherOne
"Future missions of Virgin Galactic's LauncherOne satellite carrier will see it 'piggybacking' on a 747 jumbo jet. The Boeing plane, nicknamed Cosmic Girl, will be used to carry the firm's craft to high altitude before the craft blasts into space. The 747-400 will be modified so the LauncherOne can be mounted underneath its wing, meaning the launcher has an increased maximum payload capacity of up to 881lbs ..."
New Video Added to the 105% Aquila Gilder Page
I finally got around to processing and uploading a video of my 105% Aquila sailplane with a short narration about its unique features. The flight was made on July 26, 2015, in Kernersville, North Carolina, across the street from where we lived at the time. It was a typically hot, humid day there, and the sun was shining brightly - up until a couple minutes after I launched, and then it went behind some slow moving clouds for about 20 minutes. After a total of 25 minutes in the air I decided to land and wait for the clouds to clear. Once on final approach and committed to landing, the sun appeared again. If you watch closely, you can see a few seconds before landing where the Aquila makes a sudden drop toward the ground, demonstrating how effective the spoilers are when fully deployed ...
Jeremy Clarkson Unveils New Amazon Delivery Drone
"Amazon's drone delivery project Prime Air has unveiled a new prototype in a video featuring former Top Gear host Jeremy Clarkson. According to the video, the drone could fly for up to 15 miles (24km) and deliver a parcel within 30 minutes of the order being placed. There was no indication of when it might be used by the retail giant. The firm was given permission to test delivery drones in the US earlier this year. It also has drone delivery development centers ..."
Expert Advice for Amateur Rocketry
Just as, in order to promote aerospace careers to young men and women, the U.S. Navy sponsored the National Aeromodeling Championships (Nats) in conjunction with the AMA, the Defense Department decided to promote science interest in the nation's youth through a program titled "Youth Science Corps." Army, Navy, and Air Force commands would all participate, per the plan. Unfortunately, things didn't progress much farther than the planning stage, although big things were envisioned. This article from the August 1958 edition of American Modeler provides some insight into what had been planned. When searching online for more information on the Youth Science Corps, an article from the Cincinnati Tribune appeared titled "Armed Services to Help U.S. Youth in Study of Science ..."
Notable Quote: Martha Lunken
Writer and former FAA inspector Martha Lunken climbs into Hartzell Propeller's SNJ for some recreation. Having flown the T-6 and its variants for half a century, she says the Texan/Harvard/SNJ is "the best way she knows to turn money into noise." December 2015 Air & Space magazine (p29).
Airbus Patents Detachable Cabin
"Airbus has come up with some strange concepts for future planes in recent months. These include bicycle-like seat that let passengers perch on chairs, and seats that are stacked on top of one another to allow more people to fly. Now the aircraft manufacturer has come up with another bizarre idea; detachable cabins that could cut down the amount of times it takes to board a plane ..."
If you have ever wanted to try your hand (thumbs, to be more specific) at a floatplane, then this 1/2A size Aeronca Champion is just the ticket. Although designed by Walt Mooney as a free flight ROW model that easily converts between wheels and floats, modifications to 3 or 4 channel radio control would be a snap, especially since the plans show separate construction for the control surfaces along the hinge line. With about a 46" wingspan and lightweight but strong construction, this model could easily have been designed with modern electric power and micro R/C in mind (you can scale the plans to whatever size you prefer). When I saw the photo of the 2-section wing with a plywood center joiner and removable floats, wheels and struts, it reminded me of an RTF type ...
Airbus 'Concorde 2' VTOL Could Fly from New York to London in Just 1 Hour
"It looks like a futuristic craft from the children's TV series Thunderbirds, but this sleek design could actually be for a Concorde-2 hypersonic airliner. The designs are based on a patent awarded to Airbus in July, which describes a craft that climbs vertically into the air before breaking the sound barrier as it travels horizontally across the sky. Dubbed Concorde-2 because it would be much faster and quieter than the retired supersonic jet, the plane is ..."
Vertigo VTOL Control Line Model
Website visitor Robert S. wrote to ask that I post the text of this article for the Vertigo control line model. He already has the plans. Vertigo is a very unique model in that it has the form of a box kite, is designed to take off and land vertically, and uses a third line for throttle control to enable the VTOL function. A .15 size engine will do the job according to the designer, although a .19 is shown on the plans. An electric motor could be substituted for glow, but there is no direct equivalent to the third line throttle for a motor controller. There are schemes where an R/C transmitter and receiver are used for throttle control, but that is a cumbersome implementation. There have been attempts to send the control signal down an insulated third line, but ...
Cleveland Model & Supply Company Advertisement
I can think of no better way to kick off the 2015 Christmas Season than with this 1940-era full-page advertisement by Cleveland Model & Supply Company. The company is still in business today, albeit with a much reduced inventory line. Per their website, "Cleveland Model & Supply Company, the oldest, continuously-operating model airplane company in the world, was founded in 1926 by Edward T. Pachasa (later Packard). Mr. Packard started the business with his four brothers, his mother and father in their residence and a converted barn near West 57th Street and Bridge Avenue, on the west side of Cleveland Ohio ..."
Blue Origin Rocket Makes 1st Successful Vertical Landing
On November 23, 2015, Blue Origin's commercial space flight rocket booster made its first successful return to earth while landing vertically under rocket power. This feat goes to show that sometimes you really do 'need to be a rocket scientists' to get certain things done. While NASA, under the President's directive, focuses on a 'Muslim outreach,' and abandons our manned space flight delivery vehicle program (i.e., no more Space Shuttles) the boys and girls at Blue Origins are getting the job done. It's a day of victory for good old American ingenuity, and a day of defeat for NASA ...
PowerUp FPV - Live Streaming Paper Airplane Drone
"It's a bird. It' a plane. Well, sort of. It's you, flying atop your very own paper airplane... It's PowerUp FPV: the first ever paper airplane drone with a live streaming camera! PowerUp FPV lets you experience flight as if you were sitting in the cockpit of your very own paper airplane. Wearing your smartphone with a head-mounted display, you see what your plane sees, controlling your paper drone with intuitive movements of your head. We teamed up with the leading minds at Parrot® to create the world's most incredible live streaming technology, giving you the thrill and exhilaration of flying up to 300 feet in the air ..."
"We Were Bombed in Paris!"
This could be a title from a story written within the last week, only instead of radical Nazi terrorists being the culprits it would be radical Islamic terrorists. In early 1941, the time when this article appeared in Air Trails: Hobbies for Young Men magazine, America was not yet formally engaged in world War II, although we were by proxy since our military supplied a lot of equipment and training to Allied forces. The story's author, Lt. Thomas McBride, was an American airman who helped train French pilots and actually fly missions against the "Boche" Luftwaffe. It might interest you to know that Hitler's Germany and the Islamic country of Persia (Iran) had close diplomatic ties leading up to and during WWII. In ...
Vought-Sikorsky OS2U-1 Observation Scout Plans
Solid wood scale models was a fairly popular form of modeling in the 1930s through about the 1950s. Many people who desired to participate in the hobby could not afford to buy flying model kits or even buy raw materials to build from scratch, and even plastic scale kits could be beyond the budget, so carving their favorite plane out of a solid block of pine, fir, bass, or some other readily available softwood was undertaken instead. This Vought-Sikorsky OS2U-1 Observation Scout (aka Kingfisher) appeared in the February 1941 issue of Flying Aces ...
Andrews Aircraft Models S-Ray Kit
The Andrew Aircraft Model Company (AAMCo) produced a radio control airplane, the S-Ray, that I really had the most success with when learning to fly RC. An advertisement from a 1964 edition of RC Modeler is shown to the left. It includes both the S-Ray and the H-Ray. I do not even remember what engine I had in it - most likely something really cheap that ran poorly. I probably also still had the OS Digital 3-channel radio control system in it, which would explain why I can remember running after it with the transmitter held ... After years of watching eBay for an S-Ray kit that would sell within my budgetary range (~$100), I finally won an auction a couple months ago. The kit is in excellent condition and appears to include all the original ...
Quiet Bird: Boeing’s Secret 1960s Stealth Plane Concept
"Boeing has decided to reveal a little secret from the past. The aircraft manufacturer has recently revealed their super-secret 1960s stealth plane experiment: the Model 853 'Quiet Bird,' a U.S. Army observation airplane study. What is sometimes called 'invisible' aircraft is actually visible to the naked eye but can't be caught on radar. This means that the aircraft can enter the airspace of a country without being traced, allowing for 'stealth' attacks. Boeing's 'Quiet Bird' was one of the first test studies of this kind of ..."
NASA "Journey to the Moon" Poster
Sometime in the fall of 1969, the year the Apollo 11 crew made the world's first manned landing on the Moon, Melanie's family took a vacation from their home in Middletown, Maryland, to Florida. Along with a stop at Sea World, they visited Cape Canaveral. Whilst there, she bought this "Journey to the Moon" wall poster. It has sat folded in an archive box for decades, so finally a couple days ago I decided it really should be on display. Since our house is only 940 sq. ft., there is not a lot of surplus wall area for a rather large poster. It now graces the back of our bedroom door. The poster is a great reminder of the glory days of American manned space flight and exploration program. As of this date, the U.S. no longer has a manned space effort that includes a ...
New Era Beckons for Supersonic Air Travel
"Supersonics are back. Around the world, aerospace companies and organizations, including NASA, are developing the technology that will allow passengers once again to fly at faster than the speed of sound. The first of this new breed of aircraft could be flying early in the 2020s. It was way back in 2003 that Concorde was retired. The airliner entered service in 1976 but was hobbled by complaints that it ..."
"Pirata" Twin-Engine Control Liner
If you are a control line flyer and have been itching to build your first twin-engine model, then this Pirata might be just what you've been looking for. The plans and building article appeared in the January 1956 issue of Young Men magazine. It features a built-up wing and profile fuselage and tail section pieces that will make it a quick build. Power on the original was a pair of OK Cub .099s, but you can easily convert to a couple electric motors. Wingspan is only 32" so even with two powerplants it won't be a budget buster ...
Watch Massive Drone Launch and Recover Another Drone in Flight
"This thing is called FLARES, for Flying Launch and Recovery System, and it's been flying since late 2014, with the first successful launch and recovery taking place this past August. Insitu is the maker of the ScanEagle UAV and the company says FLARES can handle a 'low-weight ScanEagle,' which is probably 18 to 20 kilograms in total weight: quite a payload. The launch is mostly self-explanatory: the ScanEagle gets hauled up a few hundred feet, throttles up, and ..."
Meet the Grid Dipper... the Best Friend an R/C Fan Ever Had
A grid dip meter (aka a grid dip oscillator, dipper, or dipmeter) has long been the instrument of choice for fine tuning LC-tuned receivers for maximum sensitivity at a particular frequency. It is a simple device that oscillates at a predetermined frequency and has a meter in the grid bias circuit to measure current. When the grid dip meter tuning circuit's inductor is in close proximity to an external inductor-capacitor tank circuit that is tuned to the 'dipper's' output frequency, the grid current exhibits a significant reduction in value - hence the name grid dip meter. Modern versions no longer use vacuum tubes that have screen grids, but the name persists even with the use of transistors that, for BJTs, have a base junction and FETs, that have a gate ...
Gear Rack Kits from Servo City
There are applications, especially in your large scale projects, that extended linear motion is required to actuate a particular function. Rather than spend you valuable time devising a mechanism of your own, you might want to check out Servo City's line of Gear Rack kits. They are integrated onto servos that plug directly into a standard R/C receiver. The 785 Gear Rack Kit, for example, comes with a Hitec HS-785HB servo that has been modified to provide up to 6.7" of linear travel ...
Paper, Scissors, Rocket
Holy moley, I had no idea the extent of paper models which have been created using color printers, a pair of scissors, and a little tape or glue. With the mind-numbing number of über-talented people in the world, it really comes as no surprise to discover the vast array of airplane, helicopters, rocket, satellite, car, truck, tank, and just about every imaginable subject that is available for modeling. An article titled, "Paper, Scissors, Rocket," authored by LesDorr, Jr., in the latest issue of Air & Space magazine reports on some of what is available. I won't repeat his text, but do want o note the Paper Models website referenced, though.
PAAckhorse Article & Plans
PAA Load (pronounced 'payload') class competition was originally sponsored by Pan American Airlines (PAA) in an effort to attract young men into the realm of aviation, in hopes of bolstering its workforce of mechanics, design engineers, loadmasters, maintenance workers, and even administrators. It was similar to the way the U.S. Navy used to sponsor and host the Nationals competition for the AMA. Part of the goal of PAA Load events was to design and fly model airplanes that could carry 'cargo' of a specific size and weight for a certain length of time using an airframe limited to regulation lifting surface area (wing + tail). In order to emphasize the relationship to 'real world' aviation, a dummy pilot figure was (and still is) also required. See chapter ...
U.S. Army Unveils Anti Drone Cannon
"Smart missiles that can change course mid flight have been shown off blowing up drones in a groundbreaking US military test.. The Enhanced Area Protection and Survivability system was originally intended to shoot down missiles. However, Army bosses said the rising threat of drones led to it being adapted to blast them out of the sky. During the latest test at Yuma ..."
Canada Guards Her Back Door
Canada has always been a good, reliable neighbor to the United States of America. Our cultures stem from common western European roots. Being a dominion (at the time) of England, Canada was drawn into World War II in September 1939, a week after England's declaration of war against Germany. Hitler invaded Poland and began his move across Europe on September 1 of that year. The U.S. provided equipment and troop training to Canadian troops up through and beyond when the Japanese navy bombed Pearl Harbor on December 7, 1941. This article from a February 1941 issue of Flying Aces reports on Canada's wartime efforts to protect the homeland. It is interesting that in the early days of the war, ski-equipped Fokker airplanes were a part of the air ...
Students Advance Mars Airplane Concept
"When you're designing an airplane that could one day be the first to fly on Mars, the answer cannot be found in the back of the book. That's one of many conclusions groups of students in two NASA-funded programs at NASA Armstrong Flight Research Center in California realized last summer. They worked on the Preliminary Research Aerodynamic Design to Land on Mars, or Prandtl-m aircraft. If the project is ultimately successful, it could collect and transmit valuable information ..."
A little levity is good comic relief from the burdens of the day. These half-dozen quips from a 1941 edition of Flying Aces are the perfect pick-me-up for an otherwise mundane day... as well as for an otherwise good day ...
AMA's New Webcast Spotlights Latest UAS News
"If you enjoy reading the latest news in AMA Today, we encourage you to check out our new video webcast-AMA Air. The monthly program will highlight model aviation and UAS news, features, and events, while showcasing members and clubs. Watch the pilot episode now via your computer, tablet, or smartphone at air.modelaircraft.org"
NASA Gives Go Ahead to World's Biggest Rocket
"It is set to be a launch that brings the science fiction of The Martian closer to reality. NASA today revealed its plans for the biggest rockets ever made have passed a massive milestone. Once it's built in 2018, it will be the world's biggest and most powerful rocket, capable of sending humans to Mars. --> 'For the first time in almost 40 years, a NASA human-rated rocket has completed all steps needed to clear a critical design review (CDR).' The agency's Space Launch ..."
Perlan II Glider to Soar to Edge of Space
"The glider that plans to hitch a ride to the edge of SPACE using nothing but polar air currents and 'stratospheric mountain waves.' Making a return trip to the edge of space typically requires enough jet power to thrust the craft through the stratosphere. But aviation specialists have built a glider capable of reaching altitudes of 90,000 ft (27,430 m) using nothing but wind. Called Perlan II, the glider is the world's first engineless aircraft designed to reach such heights by riding so-called 'mountain waves' - and this week it made history by soaring to 5,000 ft (1,525 m) during its maiden flight ..."
Modelers Sketch Book
Here is the Modelers Sketch Book that ran in the first edition of Young Men magazine - the follow-on to Air Trails - . As usual, there are lots of good tips even for today's modeler, but one item looks particularly interesting: A control line stunt model that employs a hollow wing with a moveable leading edge the redirects some of the airflow through the wing rather than over the surface. My guess is NASA or the USAF was experimenting with such a scheme back in the day and modeler Charles Taylor decided to test the theory on his airplane. Either that or he is yet another out-of-the box thinker who was trying something he dreamed up. Wouldn't it be amazing ...