What's New with The Incomplete Guide to Airfoil Usage Web Page

• 9/28/23 - Added many new aircraft. The complete list now includes 7116 aircraft entries.
• 6/4/23 - Added approximately 125 new aircraft and updated links to external sites. The complete list now includes nearly 6800 aircraft entries.
• 5/25/23 - Thanks for Burkhard Erdlenbruch for information on the Fieseler Fi 156 Storch airfoil.
• 5/31/21 - Updates some links to external websites.
• 3/8/09 - Thanks to all the people that have contributed information since the last update.
• 12/11/06 (posted 4/10/07) - Thanks go to Adam Hunt for information on the 3Xtrim aircraft, to Todd Archer for information on the Barrows Bearhawk and R&B Aircraft Bearcat, to Valter Bagalini for information on the Bagalini aircraft and to Byron Covey for information on the Pitts aircraft.

• 6/27/06 - Thanks go to Paolo Chiarlone for information on the Piaggio P.7, to Steve Mahoney for information on the Victa Airtourer, to Dimitriy Levin, for information on numerous Russian aircraft, to Bernard Biales for pointing out an error in regards to the Douglas F5D and to Rian Johnson for information on the RV-5. Lastly, many thanks go to Mika Shingo for information on a whole list of Japanese aircraft.

• 11/29/05 - Thanks go to Bernard Biales for information on several aircraft, Janic Geelen and John Schmidt for numerous de Havilland aircraft, "Jed" for the General Aircraft GAL.48 Hotspur, Guy Truex for the Titan T-51, Joe Wilding for the Adam A500 and A700, Adam Hunt for the Blue Yonder aircraft and Uwe Wahlig for the Grob 109.

• 3/29/05 - Thanks go to Cory Bird for information on his Symmetry aircraft, Jan Karnik for information on the Avia and Benes Mraz aircraft, Clark Macomber for information on the Junkers Ju 87 and 88, Eugene Horsman for information on the Baumann aircraft and Ronald Wyle for information on the Breguet 901. Lastly, thanks go to the folks at Aviation Technical Services for information on all the older Lockheed aircraft.

• 7/12/04 - Thanks to Les Whitehouse and Rick Foster, the Boulton Paul listings have been expanded and corrected. Thanks also go to Binoy Manimala for pointing out an error in the Bell 412 listing, Ed Storo for helping with Bristol Bulldog information, Jens Wehner for La-5 and La-7 information and John Bennett for Lockheed C-5 information.

• 4/2/04 - Thanks go to Jim Ayers for correcting the Van's RV-3 entry, Jim Bede for providing information on the BD-17, -18 and -19, John Joyce, for information on the AA-1 series of aircraft and Clark Macomber for information on a lot of historic aircraft.

• 2/6/04 - Thanks go to Petri Nygrin for information on the Finnish Valmet and VL aircraft, George Hauzenberger for information on Handley Page aircraft, Peter Lissaman for information on the Handley Page Victor, Jerry Parker for information on the Bounsall Super Prospector, Wells Sullivan for information on the Kawanishi N1K1-J Shiden and J. Gordon Leishman for information on the Westland Wasp and Scout helicopters.

• 11/5/03 - Thanks go to Mac Blair for digging out the designations of the airfoils used on the North American AJ Savage and to Klaus Tippl for correcting the Robin listings. Additionally, I've dug up a few new aircraft, which have been added to the list.

• 6/4/03 - Thanks to the digging of Andrew Crosby, I have finally been able to add the Me 321 and 323 to the list. I have also added several more aircraft and helicopters (such as the Lancair Sentry and Eurocopter EC 145), based upon recently published information.

• 5/7/03 - An especially big thanks go out to Eric Voisard, who has dug out Messerschmitt documents that finally nail down the airfoils used on the Bf 109. Along the way, he also has dug out the Bv 155's airfoil information. Thanks also go to Corky Scott, for info on the Christavia I and IV. Besides, this information, I've stumbled across airfoil for for several other aircraft, that have been added.

• 3/9/03 - Thanks go out to Hakan Langebro for information on the FFVS J22, to Eric Voisard for information on the Morane-Saulnier MS 406, to Gilles Lehoux for correcting the Brantly helicopters listings and to Paul Stambaugh for correcting the Pitts listings. Additionally, I have cleaned up the Vought aircraft listings.

• 12/3/02 - In this update, there are quite a number of new helicopter listings, plus several low Reynolds number vehicles.

• 10/31/02 - In this update, I've added a number of aircraft and corrected some helicopter listings. Thanks go to Ian Evans, for information on a number of British post war research aircraft.

• 8/3/02 - Thanks go out to Dick Sherrer, who was able to find me a document that lists the airfoils used on the Lockheed F-94C Starfire, Stan Hinman, who corrected the ASW-12 listing, Eric Voisard, for information on the Dewoitine D.520 and Bloch MB.151 and Cliff Gunsallu for more information on the Kaman helicopters. I've scoured my newest Jane's All The World Aircraft and have added a lot of new aircraft. Additionally, from a US Navy web site, I finally found a document listing the airfoil used on the Douglas F3D Skynight.

  In addition to updating the list, I've created a supplementary page, which lists which aircraft I am still looking for airfoil designations for. If anyone has information on any of these aircraft, I would be grateful to hear from them.

• 6/18/02 - Thanks to Gavin Slater for correcting the Schweizer SGS 2-33 listing and Boud Kuenen for information on the Wittman Buttercup. I am grateful to Marat Tishchenko, retired head of Mil Helicopter, who gave me information regarding the Mi-26 and Mi-28 and Cliff Gunsailus of Kaman, who supplied information on the early Kaman helicopters. Thanks also to Harry Parkinson for correcting the Carson/ATI S-61 blade listing and for information on the American Sportscopter Ultrasport line.

• 3/6/02 - Sorry for the gaps in updates - I have been out of town quite a bit. The good news is that the page is not dead! Thanks in this update go to Roger Duance, for information on the Austers, Ahoj Marek Sindler for information on the Aero L-59 and L-159, Bill Harper for information on the Travel Airs, Ed Storo for information on the Bristol Bulldog, Everett Collier for information on the Pulsar and W.B. Jolley for information on the Lanier Paraplane. Lastly, I have added some new aircraft and helicopters to the list.

• 11/7/01 - Thanks go to Todd Mason for correcting the information on the Sorrell Hyperbipe and for also supplying information on the Rose Rhinehart Parrakeet. Also, thanks go to Robert Ehrlich for correcting the Centrair series listings. In this update there are also a number of new aircraft and helicopters listed. In particular, I finally found an American Helicopter Society paper that listed the airfoils used on the rotor of the EH 101.
• 9/17/01 - Thanks go out to David Nixon for information regarding the Boeing Condor and Nicolas from France for information regarding the Socata TBM 700. I would also like to thank my father, who examined the Douglas World Cruiser on display at the National Air & Space Museum. His observations resolved the uncertainity as to which airfoil was used on this aircraft. I have also added a number of new aircraft, including the Amiots and the Nakajima Ki-27, based upon some digging I did.

• 8/16/01 - Thanks go out to Michael Hansow for supplying new information concerning the Douglas World Cruiser and to Mark Bettosini for information regarding the Handley Turbo Raven, Maverick Twinjet, Abaris Golden Arrow, ViperJet II and Bearjet. Lastly, I have added a number of aerobatic aircraft including the Rihn and Zivko series.

• 8/3/01 - Several additions, including the MD Helicopters 900, in this update.

• 6/26/01 - In this update, some new aircraft and helicopters, such as the Kaman K-MAX, have been added. Additionally Tobias Danninger pointed out that the Horten IV and VI flying wings had a NACA 0010 at the wing tip, which my checking confirmed. However, the real reason for the update is that I had to change the code for the Nedstat counter, as the old counter stops working on July 6th.

• 6/7/01 - Thanks go to Eric Voisard for information regarding the Nakajima Ki-44 Shoki and to Matthew Faiello for information on the Reggiane Re.2005 (and by implication, the Re.2001, 2002, 2003 and 2004). A little detective work on my part has allowed the addition of a number of the pre-WWII Junker's designs.

• 5/14/01 - Thanks go out to Derek Buckmaster, for his help in correcting and enhancing the Commonwealth listings. In addition, thanks to recent articles in Air Enthusiast, I have been able to add to the General Aircraft and Zlin sections of the list.

• 4/30/01 - Thanks to a SAE/AIAA paper written by Albert Piccirillo, "The Clark Y Airfoil: A Historical Retrospective", I have been able to add several aircraft, including the Northrop Tacit Blue.

• 3/27/01 - Thanks go out to Andreas Pischinger for information concering the Mini 500 helicopter and Hakan Langebro for information concerning the Saab Safir, Saab Safari, MFI-15 and MFI-17 aircraft.

• 2/27/01 - Thanks go to George Maiorana for information concerning the Douglas C-133 Cargomaster, to Rod Anderson concerning the CarterCopter and Ludek Souhrada concerning the Ae 270 Ibis. Additionally, I have dredged up information on my own concerning several other aircraft, including the Eurocopter AS350BB2 and EC130 helicopters.

• 2/5/01 - Thanks go to Michael Firczuk and Ron Lawrence for information regarding the airfoils used on the Bugatti 100P racing aircraft. I have also added a number of WWII German aircraft, the information coming from reports John McMasters gave me years ago (and that I had forgotten about). Attentive readers will note that the listing for the Me 163B Komet has changed. The new listing is from information in the reports John gave me. These airfoils are really the same as those listed before, but now the designations are those actually used by Messerschmitt.

• 1/22/01 - Thanks to Norm Avery's and Kevin Thompson's two part history of North American Aviation, I have been able to enrich the listings for this company.

• 12/12/00 - After quite a bit of searching, I was finally able to add the Douglas F4D Skyray and F5D Skylancer in this update. Thanks go to Fritz Johl for information on the Beatty-Johl sailplanes and to Todd Chisum for information on a number of light aircraft.

• 11/28/00 - Thanks to Bill Blake's research, many WWII era gliders have been added to the list in this update. Thanks also go to Stan Hinman for correcting the listing for the Lancair Legacy 2000. Lastly, I note the passing of Birch Matthews, a contributor to this list, who died on October 28th.

• 11/16/00 - Several new aircraft have been added - I reverse engineered the airfoils on the DH-108 from a drawing and those on the Grumman 698 from other info. Thanks to an AIAA paper I stumbled across, I have been able to add and correct several applications of Bob Liebeck's airfoils.

• 11/6/00 - Thanks go to Fassi Kafyeke of Bombardier Aerospace for the designation of the airfoil used on the Canadair CL215 waterbomber and it successors. Information in Jay Miller's book on the X-Planes has enabled me to add many of these aircraft. The Putnam books on McDonnell Douglas and Dehavilland were useful in adding to these areas and I have added my best guess of the airfoil used on the Dehavilland Venom and Sea Vixen, based upon some coordinates I measured from a picture of a Venom with its wings folded.

• 10/27/00 - A lot of digging has allowed me to straighten out and expand the Grumman listings and add some other aircraft. The Onera website supplied some limited information about the airfoils used on the NH 90 and Tiger helicopters. Thanks go to Jeff Scott for information on the XB-70 and to Martin Hollman, for what he was willing to say about the airfoils used on the Lancair Legacy 2000.

• 10/11/00 - Thanks go to Chris Pocock, who corrected the listings for the Lockheed U-2 and U-2R, based upon Lockheed reports he has copies of and to Michele Bucceri for information on the Savoia-Marchetti SM.79. Thanks also go to Jim Shook, who pointed out an error in the tip airfoil listed for the Beech King Air series.

• 9/20/00 - I have been working my way through Bill Hunt's book on the history of the early development of Sikorsky helicopters and this has helped add information to this portion of the list. Additionally, thanks to Schiffer's new book on Messerschmitt, I have added several new aircraft to this area. Additionally, Eric Voisard has convinced me that the early Bf 109s might have had a different wing airfoil than the later model aircraft - this is reflected now in the listings.

• 9/12/00 - Reformated the web page for faster downloads by removing the table-html format.

• 8/29/00 - Thanks go to G.S. Williams for a corrections to the Tipsy Nipper and Thruxton Jackaroo and to Philippe Bezard for additional information on the Fouga CM.8.R-13 Sylphe III (his father owns the only flying example of this aircraft). I have made several other minor additions and corrections, along with expanding the header information.

• 8/16/00 - Started using a new counter through NedStat.com. The previous had counted upwards of 20,000 hits in 2 yrs.

• 8/11/00 - In this update, I have added a substantial number of British aircraft and corrected existing entries, all with the aid of information that Grahame Gates has collected. Thanks much Graham!

• 7/20/00 - Thanks go to Dave Jackson for information on the Flettner 282 Kolibri and Kaman H-2 Seasprite, Alvaro Martins Abdalla for information on the Neiva P-56 Paulistinha and AA 65-2 Canario and Tim Reyes for corrections to the Smyth Sidewinder information.

• 7/7/00 - Thanks go to Bill Blake, who dug through his archives and gave me airfoil information for a considerable number of US military aircraft. Thanks also go to Dick Scherrer for information regarding the Lockheed XST Have Blue and F-117 aircraft. Lastly, thanks thanks go to Birch Matthews for helping me straighten out some of the Lockheed model numbers.
• 6/19/00 - A special thanks to David Morgan, who has supplied me with airfoils designations for all of the McDonnell aircraft I was missing, plus information that corrected several existing entries for McDonnell aircraft!

• 6/16/00 - Thanks go to Gordon Robinson for information concerning the Farnborough F1 and Bill Turner concerning the Caudron 460. Also, thanks go to Oran Paul for information concerning a correction to the listing of the Bell 206. A little web surfing on my part brought to light information concerning the Avro 707 and by implication, the Avro 698 Vulcan.

• 6/8/00 - Thanks go to Northrop Grumman, who provided me with the designations of the airfoils used on the E-2 Hawkeye and Peter McMillan, who provided me with the designation of the airfoil used on the Vickers Vimy. Also, thanks go to Daniel Hatfield of Scaled Composites, who corrected my entries for the Adams M-309 and Dr Michel Guinchard, who provided me with information on the Latecoere 298. Lastly, some digging on my part through old NACA documents has yielded information on several old helicopters and autogyros, which have been added.

• 5/30/00 - Some web surfing has supplied me with information on several more sailplanes, plus I was able to finally find the airfoil used on the Boeing YL-15. In addition, a corporate history of Vultee has allowed me to add quite a bit of information on this firm's aircraft. Finally, thanks go to Ewen Taylor for information regarding the airfoil used on the Fleet 80 Canuck.

• 5/24/00 - Many thanks to Mal Holcomb for digging out the airfoils used on the Beech 28 XA-38 Grizzly and 34 Twin-Quad. Thanks also go to Sandy Padilla for correcting the Rockwell Space Shuttle entry. Lastly, thanks to John Roncz, I have been able to put names on several of his airfoil designs, plus his information has allowed me to add the Carter Copter to the helicopter list.

• 5/15/00 - Information from Dan Somers' web site (www.airfoils.com) has enabled me to add entries for the Roberts Cygnet, MSU-Honda HM-01 and -02, Groen Brothers Hawk 4 gyrocopter and Ishida TW-68 tilt wing aircraft. Additionally, I have fixed the entry for the Mooney 301 using information from this web page.

  Thanks to information supplied by Mal Holcomb, I was able to add the Beech models 25 and 26 AT-10 Wichita. Lastly, Bill Rose dug out and supplied me with information on the wing General Dynamics built for the RB-57F.

• 4/17/00 - In the aircraft section, I have added the De Havilland Fox Moth, information courtesy of Joel Hirtle. Additionally, Scott Sharp corrected the entry for the Martin Baker MB5.

  Ray Prouty provided me with a wealth of information on older Bell rotor blades and this has been added to the helicopter section.

• 2/23/00 - Neal Willford and Dave Ellis have helped me fix up the Cessna listings a bit more. Using a history of Fairchild, I have been able to add some more aircraft to these listings. Lastly, I stumbled across information on the elusive Rohr Two-175.

• 2/16/00 -Thanks to information Serge Krauss provided, I have been able to add all of the Arup and related aircraft. With Neal Willford's help, the Cessna entries have been corrected and many missing models have been added. Some information in a new book has allowed me to add several Heinkel aircraft. Lastly, Jim Marske has provided me information on his new Pioneer III sailplane. On a personal note, adding this aircraft is particularly gratifying, as the "L" in the RLM-35 designation stands for "Lednicer"!

  Observant users of the list will note another change - the Gloster E.28/39 Pathfinder is listed twice. I have discovered that these aircraft were flown with two different wings, one having the EC airfoils, and the other having the NACA 23012 airfoil.

• 2/4/00 - Thanks to the wealth of information in Fred Thomas' excellent book "Fundamentals of Sailplane Design", I have been able to correct and enrich many of the sailplane entries. In addition, I have started to work on listing the Vought aircraft by model number.

• 1/24/00 - Thanks to the assistance of a friend, I have finally found the designations of the airfoils for the Boeing 737-100 to -500 and the Boeing 747, which have all been added. Additionally, Birch Matthews kindly looked up the airfoils used on the Bell Airacuda for me.

• 1/14/2000 - We have now finished transfering information from Juptner's books. Volume 9 yielded little new information, but it did provide information for the Mooney Mite which contradicts information in Jane's! The primary additions in this update are several more DeHavilland aircraft and the Grumman F-14. I backed out the F-14's airfoils from a NASA report and Bill Mason supplied me with corraborating information.

  I also discovered a mistake regarding the Douglas B-18 and B-23. These aircraft shared a common wing with the DC-3. When I corrected the DC-3, I forgot to correct these aircraft.

• 12/20/99 -The primary additions in this update are several between-the-wars fighters Grahame Gates found listed in a NACA document and these have been added.

  In terms of corrections, with the help of Robert Lind, we have found NACA documents that show that Juptner was correct as to the tip airfoil on the DC-3. This means that the tip airfoils used on the DC-2, DC-3 and Super DC-3 were all different! Another correction regards the airfoils used on the Boeing 314. Here, NACA documents show that Juptner was probably wrong. This is based upon the assertion that the wing on the XB-15 was also the 314's wing, as the NACA document gives the XB-15's airfoils.

• 12/8/99 - With the help of my father, we have now added the information from the first eight volumes of Juptner. Recent additions have included many WACO aircraft and a number of other pre-WWII US commercial aircraft. As a result, the list has over 3600 conventional aircraft.

• 12/2/99 - This update sees a lot more aircraft added, thanks to Juptner. In particular, we now have the airfoil data for the Martin 130 Clipper, Douglas DC-4E and Douglas DC-5. With the latter two additions, all of the Douglas "DC" series is now listed. However, I am beginning to find that Juptner contains information that disagrees with other sources. In particular, I think that Juptner's airfoil listings for the Lockheed 12 are incorrect, so I am sticking with data from Lockheed documents. In the case of the DC-3, Juptner lists the same root airfoil I have seen in other sources, but a different tip airfoil. For the moment, I am listing both possible tip airfoils. Also, I have listed both possible airfoils that I have found for the Republic Sea Bee.

• 11/16/99 - Once again, my father has supplied me with more aircraft culled from Juptner. Additionally, Tad Tadlock supplied me with quite a number of older British aircraft, culled from an RAE report and Grahame Gates supplied quite a few older aircraft. Lastly, thanks go out to Bob Kowalski who supplied information some older US Navy aircraft.

• 11/6/99 - In this update, like previous ones, there are a large number of additions unearthed by my father from Juptner's books. Additionally, Grahame Gates found the airfoils used on the Hawker Tornado and Typhoon and Joe Donoghue supplied me with the airfoils used on the Martin Mercator.

  I have recently found a picture of a display board showing cross sections of the blades used on Sikorsky helicopters, from the VS-300 to the Black Hawk. The photo is an oblique shot, but I have been working on measuring the airfoils displayed. Based upon this information, I have changed the airfoil I think was used on the VS-300.

• 10/25/99 - Additions with this update include many aircraft from the 1920s, dug out of Juptner by my father. Additionally, Bill McCune has loaned me a history of Martin, which provided information on quite a few of these aircraft. Lastly, I finally found the designation of the airfoil used on the Luscombe 8E, which has been added.

  A major correction has been made in regard to the airfoils used on the Messerschmitt 109 and 110. Tad Tadlock provided me with copies of original Messerschmitt documents showing what airfoils were used. Another correction concerns the DeHavilland 82. Hellmut Freising has supplied me information that has led me to change this listing.

• 10/7/99 -My father has continued to dig through Juptner, uncovering lots of new data concerning aircraft from the 1920s and 30s. Additionally, I happened to stumble across the airfoil used on the Grumman F9F Panther in a NACA report and the wing airfoil used on the Gee Bee Acender canard aircraft. I have also made a small correction concerning the Douglas A-3 Skywarrior - these aircraft had an cambered leading edge added sometime during the production run of the aircraft.

• 9/17/99 - The list of conventional aircraft has reached and surpassed the 3000 mark. Appropriately, the 3000th aircraft was the UTIAS Ornithopter, which makes use of airfoils designed by Prof. Michael Selig, the host of this page. Besides this aircraft, Aki Soukas has straightened out the listings of the PIK series for me and my father has dug out more aircraft, this time working from Juptner's series.

• 8/26/99 - This update adds lots of new sailplanes to the list. Additionally, I have come across some sketchy information on airfoils used on several German WWII aircraft, and this has been too has been added. I am now just short of having 3000 conventionally configured aircraft on the list.

• 7/30/99 - In this update, I spent some time sorting out the North American Sabre series, using info from Mac Blair. The airfoils listed previously for the Sabre were those in the streamwise direction. This has been changed to those normal to the quarter chord line (a more conventional definition for swept wings). The Sabres with the 6-3 wing have been delineated by showing a slightly thinner wing. Additionally, the North American Fury series have been filled out and the Canadair Sabres and Commonwealth Avon Sabres have been added.

  Information found at the NASM by Raymond Young and Brian Nicklas has finally uncovered the airfoil used on the Consolidated PBY. As this aircraft was also produced by the Naval Aircraft Factory, Canadian Vickers, Boeing Canada and Amtorg (in the USSR), quite a few listings have been added.

  Lastly, access to the original Grumman F8F drawings has shown that the root airfoil on this aircraft was a NACA 23018, not a NACA 23015, so this has been fixed.

• 7/14/99 - More older aircraft have been added, thanks to more digging by my father in the NASM library. The AerItalia G222 is now better defined, thanks to a cross-section sent to me by a correspondent. I have backed out what I believe to be the correct airfoil. Similar information from another person has enabled me to also better define the B-47 and B-52 wing airfoils. At the suggestion of John MacMasters, I have now listed the Boeing 367-80 (707), B-47 and B-52 by both the BAC airfoils numbers and the NACA designations for the airfoils (to keep his name clear, I should note that he didn't supply me with the information, just the suggestion). In all three cases, the "mod" refers to camber line changes made to the airfoils. Listings for the Boeing 737, 747, 757, 767 and ALCM come from yet another source.

  The listings for biplanes with different airfoils on the upper and lower wings have been changed to be more coherent.

• 6/30/99 - More aircraft have been added, thanks to some digging of mine, my father's digging in the NASM library and some data Birch Matthews sent me. Birch's data are US Navy data sheets on aircraft from the 1920s and 1930s. Among other things, these sheets show a different tip airfoil for the DC-2 (R2D) than given by other sources for the DC-3. Hence, the DC-1 and DC-2 records have been changed. Some of my digging in a Jane's compendum produced the definitive answer on the airfoil of the Curtiss JN-4, so this too has been changed. Notable additions to the list are two more Grummans, the F2F and F3F and lots of early Boeing aircraft.

  Note: some biplanes recently added had different airfoils on their upper and lower wings. In these cases, the first root airfoil given is for the upper wing and the second for the lower wing. The same holds for the tip airfoils.

• 6/18/99 - Several errors have been fixed. I missed interpreted a statement in a book, which led to me listing some non-existent Howard models. These have been removed. Additionally, I still believe that the Messerschmitt P.1101 used the wing of the Me 262, but I now know that the Bell X-5 had a completely new wing, so this too has been fixed.

  Digging through old NACA reports, I uncovered the wing airfoils on many new aircraft, including the Grumman F7F Tigercat and Fairchild C-123. My father's digging in the NASM library has supplied many new aircraft from the 1930s and Sam Ferguson has helped me with new helicopters and tilt rotors. From Germany, Martin Rippl supplied me with information on the Grob Strato 2C.

• 6/11/99 - New aircraft include the Bell XV-3 (wing and rotor airfoils), the North American OV-10, and amazingly enough, the Su-24! Also, in helicopters, I finally got info on the Bell 47 rotor airfoil.

• 5/3/99 - The list has now passed the 2000 aircraft mark! New with this update are lots of Russian aircraft. I have gone through Gunston's two books, "Aircraft of the Soviet Union" and "Encyclopedia of Russian Aircraft" with a fine tooth comb. Other new aircraft include the Northrop Delta and Douglas B-23 Dragon. Also, I have expanded the Beech Staggerwing listings, as this aircraft was produced with three different wing airfoils.

• 4/1/99 - In this update, I have concentrated in adding homebuilts and sailplanes. For instance, the list now includes almost all of Chris Heintz's homebuilt designs. In addition, I recently stumbled across the airfoil spec for the North American X-15, so this has been added too.

• 2/25/99 - Notable additions in this update are the Republic F-84, Chance Vought Cutlass and VFW-Fokker VAK-191B. Additionally, a lot of sailplanes, homebuilts and human powered aircraft have been added. The Britten Norman Islander and Triislander have been moved out of the Pilatus listing to more fully show their lineage. Additionally, the Seversky and Republic listings have been cleaned up.

• 1/12/99 - Tons of new aircraft, including the Bell X-1 and lots of sailplanes.

• 1/8/99 - Significant additions include the Avro C.102 Jetliner, Vickers Viscount and Ford Trimotor. Additionally, Grahame Gates corrected many of the Miles and Beagle entries, plus provided me with the rest of the airfoil information for the Miles aircraft. Among these Miles aircraft are the Miles M.35 and M.39B Libellula, in the canard section. Users should note that the airfoils listed for the Messerschmitt Bf 109 have changed slightly, as better information has come to light.

• 1/5/99 - One change (among others...) regards the Bf 109. A correspondent in Belgium has found more accurate info, which changes this entry.

• 11/25/98 - New aircraft include the three major models of the Lockheed Constellation (the 1049, 749 and 1649 Starliner), the Lockheed C-141 Starlifter, Lockheed C-5 Galaxy and the North American B-25. Additionally, I have added a number of unmanned aircraft (RPVs and UAVs), such as the Ryan Firebee.

• 11/13/98 - Several canard aircraft have been added, thanks to input from e-mail correspondents. These include the E-Racer and various models of the CoZy and Cosy. In conventional aircraft, a number of homebuilts have been added, but the most important additions have been the Grob Egrett 2, Messerschmitt Bf 108 and 109 and the Fisher XP-75 Eagle. The Messerschmitt aircraft come from a correspondent in Germany. Additional, the entries for Lancair models have been corrected and moved to Neico, the correct name of the manufacturer.

• 11/1/98 - Some digging through NACA war time reports has provided information on the Consolidated B-36, Hughes XF-11, Republic XF-12 and the Hughes-Kaiser HK-1 (the Spruce Goose). Through another source came information in regard to the Douglas A-3 and Grumman Gulfstream II and lastly, a visitor to the page has provided me with information on all of the Monocoupe aircraft.

• 10/9/98 - Another update to The Incomplete Guide to Airfoil Usage. Some more new aircraft have been added, including the DC-3. One important change is that the outboard airfoil on the P-38 was found to have been in error and has been corrected.

• 9/19/98 - Another update to The Incomplete Guide to Airfoil Usage...now the link to submit new data is simply a mailto link rather than running in a forms mode.

• 8/20/98 - Another update to The Incomplete Guide to Airfoil Usage.

• 7/31/98 - Another update to The Incomplete Guide to Airfoil Usage...now at 1000 aircraft.

• 7/24/98 - Another update to The Incomplete Guide to Airfoil Usage...trying hard to get to 1000 aircraft.

• 7/12/98 - Its still growing! Many sailplanes this time, plus some more canards.

• 7/2/98 - More airplanes were added. Now there are about 700 in the database.

• 6/12/98 - Around 100 more airplanes were added.

• 6/4/98 - "The Incomplete Guide to Airfoil Usage" Web Page on the UIUC Applied Aerodynamics Group web server begins!