---------------------------------------------------------- Yak-List Digest Archive --- Total Messages Posted Sat 04/23/05:4 ---------------------------------------------------------- Today's Message Index: ---------------------- 1. 03:26 AM - Re: M-14 prop (Don Glittenberg) 2. 04:36 AM - Re: I read the Chinese translation of your article (cjpilot710@aol.com) 3. 08:37 PM - Re: Re: I read the Chinese translation of your article (Roger Doc Kemp) 4. 08:58 PM - Jim Ivey (ByronMFox@aol.com) ________________________________ Message 1 _____________________________________ Time: 03:26:43 AM PST US From: "Don Glittenberg" Subject: Re: Yak-List: M-14 prop --> Yak-List message posted by: "Don Glittenberg" When I get back I can measure my spare. DRG ----- Original Message ----- From: Subject: Yak-List: M-14 prop > --> Yak-List message posted by: "cpayne@joimail.com" > > Does anyone happen to have the diameter of the paddle blade > bolt circle diameter? It would save me from removing it and > measuring :) > > Craig Payne > > > > > > > > ________________________________ Message 2 _____________________________________ Time: 04:36:33 AM PST US From: cjpilot710@aol.com Subject: Yak-List: Re: I read the Chinese translation of your article --> Yak-List message posted by: cjpilot710@aol.com In a message dated 4/22/2005 6:47:55 P.M. Eastern Daylight Time, bsch72@hotmail.com writes: Second try on Bushi's letter. Pappy Dear Jim, I have just read from Internet the Chinese translation of your article =E2=80=9CNot a Copy=E2=80=9D, and I would like to express my appriciation to you. I don=E2=80=99t know from where the translator read your original article.=20The translator calls himself an air-modler, is building modle of CJ-6, thus quite interested in details concerning the development history of that aircraft type. He read and liked your article, and consequently translated it into Chinese and put the translation on the web. I recall you asked me the reason for the sea-gull type of the CJ-6=E2=80=99s wing. I explained during my visit to Oshkosh, but I am afraid I did=E2=80=99nt make myself well understood. The reason was, when I designed the CJ-6 wing, I wanted the left and right flaps to be built into one piece, thus to elimilate the vortex of the air stream at flaps=E2=80=99 root when deflected. On a dihedral wing, there will be innevetiblely one gap at the flap roots when flaps deflected, thus lift reduced. I hoped to expand the range between the maximum and minimum speeds of the plane, therefore , I wanted to increase the lift augumentation of the flaps to the maximum. So I chose to built the flaps of both sides into one piece. This made the hinge lines of the flaps on both wings should be=20on one line, that meant the bottom surface of center wing should be flat. Since the center wing is tapered, and the thickness gradually become thinner towards tips, when the bottom was kept flat, the upper surfaces appeared to have an anhidual, and consequently a sea-gull type turned out. Also, the one-piece=20 flap serves as a speed braker very effectively. The flap-down configuration with a connected one-piece flap is an unusual feature of CJ-6 aerodynamic design. You as a pilot seating in the cockpit, and flaps are on the bottom side of the wings therefore out of your vision, you may not noticed your flaps=E2=80=99 confirguration when deflected. But when you watch the video tapes of trainers=E2=80=99 take-offs and landings, you may immediately notice the difference between =20Cj-6 and Yaks=E2=80=99. Yaks have two pieces of flaps, with a remarkeble gap in-between when deflected, and CJ-6 has a left-and =E2=80=93right-connected flap, going through beneath the bottom of the fuselage. By the way, the city where I saw the Flying-Tiger P-40 and P-38s was Guilin, istead of Kungming, and Guilin was the city where I decided to design aircraft in the future. Thank your for your excellent article =E2=80=9CNot a Copy=E2=80=9D. Yaxi says =E2=80=9CHi=E2=80=9D to Dede. My best wishes to you and your family. Bushi Cheng P.S. If you received this e-mail letter, please sent me a message. Thank you. ________________________________ Message 3 _____________________________________ Time: 08:37:34 PM PST US From: "Roger Doc Kemp" Subject: RE: Yak-List: Re: I read the Chinese translation of your article --> Yak-List message posted by: "Roger Doc Kemp" Pappy, To cool. Not everyday you get to converse with the designer of the A/C you fly. Doc > [Original Message] > From: > To: ; > Date: 4/23/2005 6:27:11 AM > Subject: Yak-List: Re: I read the Chinese translation of your article > > --> Yak-List message posted by: cjpilot710@aol.com > > > In a message dated 4/22/2005 6:47:55 P.M. Eastern Daylight Time, > bsch72@hotmail.com writes: > > Second try on Bushi's letter. Pappy > > > Dear Jim, > I have just read from Internet the Chinese translation of your article =E2=80=9CNot > a Copy=E2=80=9D, and I would like to express my appriciation to you. > I don=E2=80=99t know from where the translator read your original article.=20The > translator calls himself an air-modler, is building modle of CJ-6, thus quite > interested in details concerning the development history of that aircraft type. > He read and liked your article, and consequently translated it into Chinese > and put the translation on the web. > I recall you asked me the reason for the sea-gull type of the CJ-6=E2=80=99s wing. I > explained during my visit to Oshkosh, but I am afraid I did=E2=80=99nt make myself > well understood. The reason was, when I designed the CJ-6 wing, I wanted the > left and right flaps to be built into one piece, thus to elimilate the vortex > of the air stream at flaps=E2=80=99 root when deflected. On a dihedral wing, there > will be innevetiblely one gap at the flap roots when flaps deflected, thus > lift reduced. I hoped to expand the range between the maximum and minimum > speeds of the plane, therefore , I wanted to increase the lift augumentation of > the flaps to the maximum. So I chose to built the flaps of both sides into > one piece. This made the hinge lines of the flaps on both wings should be=20on > one line, that meant the bottom surface of center wing should be flat. Since > the center wing is tapered, and the thickness gradually become thinner > towards tips, when the bottom was kept flat, the upper surfaces appeared to have an > anhidual, and consequently a sea-gull type turned out. Also, the one-piece > flap serves as a speed braker very effectively. The flap-down configuration > with a connected one-piece flap is an unusual feature of CJ-6 aerodynamic > design. > You as a pilot seating in the cockpit, and flaps are on the bottom side of > the wings therefore out of your vision, you may not noticed your flaps=E2=80=99 > confirguration when deflected. But when you watch the video tapes of trainers=E2=80=99 > take-offs and landings, you may immediately notice the difference between =20Cj-6 > and Yaks=E2=80=99. Yaks have two pieces of flaps, with a remarkeble gap in-between > when deflected, and CJ-6 has a left-and =E2=80=93right-connected flap, going through > beneath the bottom of the fuselage. > By the way, the city where I saw the Flying-Tiger P-40 and P-38s was Guilin, > istead of Kungming, and Guilin was the city where I decided to design > aircraft in the future. > Thank your for your excellent article =E2=80=9CNot a Copy=E2=80=9D. Yaxi says =E2=80=9CHi=E2=80=9D to > Dede. > My best wishes to you and your family. > Bushi Cheng > P.S. If you received this e-mail letter, please sent me a message. Thank you. > > ________________________________ Message 4 _____________________________________ Time: 08:58:17 PM PST US From: ByronMFox@aol.com Subject: Yak-List: Jim Ivey --> Yak-List message posted by: ByronMFox@aol.com Jim Ivey, please contact me off list. Thanks, Blitz Byron M. Fox The RPA Store 80 Milland Drive Mill Valley, CA 94941 415-307-2405 Cells Days 415-380-0907 Home Eves