Guerchais Designations

I've been trying to puzzle through the designations of aircraft designed by Louis Guerchais. So far, no real pattern emerges.

Note: 'T' for Type designations are confusing. These are shown as Type x, Tx, T.x, and T-x in different publications

Coupet-Guerchais

Coupet-Guerchais 1-01 - 1922 10.2 m span glider by Lucien Coupet and Louis Guerchais

Avions Legers Guerchais-Henriot
NB: Guerchais-Henriot likely operated as a sub-set of Louis Heriot's Société d'exploitation des carburateurs

Guerchais-Henriot T.1 - 1928 4 pax 'limousine' monoplane, 1 x 450 hp Hispano-Suiza
-- NB: I had 'TV.1' in my notes but can now find no confirmation of this designation

Guerchais-Henriot T.2 - 1928 2-seat tandem high-wing monoplane light tourer
- T.2: 1 x 45 hp Anzani 6-cyl radial, 12m span, wooden constr., 1 prototype built
-- http://www.flightglobal.com/pdfarchive/view/1928/1928 - 0854.html

- NB: T.2 either had multiple engine changes or there is conf. over type
-- Flight says that engine was an 80 hp "Armstrong-Genet" not an Anzani
-- http://www.flightglobal.com/pdfarchive/view/1928/1928 - 0842.html
-- Flight 20 Sept 1928 on Orly meet says T.2 engine was a 50 hp Anzani
-- http://www.flightglobal.com/pdfarchive/view/1928/1928 - 0853.htm
-- http://www.flightglobal.com/pdfarchive/view/1928/1928 - 0854.html (photo)
-- Flight 8 Aug 1929 says that engine was an 95 hp Salmson (7AC radial ??)
-- http://www.flightglobal.com/pdfarchive/view/1929/1929-1 - 0700.html

Guerchais-Henriot T.3 - 1931 single-seat parasol monoplane acrobatic aircraft
- T.3: 1 x 40 hp Salmson 9 Ad 9-cylinder radial engine

Guerchais-Henriot T.4 - [Project] 1931 tourer version of T.3 acrobatic aircraft
- T.4: 1 x 50 hp Salmson 5 Ac 5-cylinder radial engine

Guerchais-Henriot T.5 - 1929, 1 x 95 hp Renault [no other details]
- T.5: Flight 6 June 1930, "Guerchais-Henriot 5" numbered M3 in Int'l Touring Comp'n
-- http://www.flightglobal.com/pdfarchive/view/1930/untitled0 - 0636.html

Avions Legers Guerchais

Guerchais T.6 - 1931 5-seat transport/postal a/c, high-wing monoplane, 1 built
- Guerchais 6: 1 x 250 hp Hispano-Suiza 6Mb water-cooled inline, 14.6m span
-- http://www.secretprojects.co.uk/forum/index.php/topic,18649.0.html

Guerchais T.7 - [??] Poss. 4-to-10 pax transport, 120-to-180 hp engine

Guerchais T.8 - 1929 3-seat light a/c, 1 x 95 hp Renault 4Pb upright 4-cyl inline

Guerchais T.9 - 1931* low-wing cabin monoplane, 1 x 120 hp Renault**
-- * crezan.net's Henri Massot page lists T.9 CoA as n°3229, 6 Aug '32
-- ** Flight 3 June 1932 lists engine as a 100 hp Renault
-- http://www.flightglobal.com/pdfarchive/view/1932/1932 - 0533.html
- T.9: F-AMBD flown by Henri Massot in 1932 Circuit of Europe competition
-- http://www.flightglobal.com/pdfarchive/view/1932/1932 - 0829.html

Guerchais T.10 - 193? single-seat low-wing light a/c, 1 x 40 hp Salmson 9 Ad

Guerchais T.11 - [??]

Guerchais T.12 - 1931* 3-seat high-wing monoplane cabin tourer, 12m span
-- * crezan.net's Henri Massot page lists T.12 CoA as issued 1 March 1929
-- http://www.crezan.net/pag_aby/massot.html
- Guerchais T-12: 1 x 95 hp Renault 4Pb Bengali 4-cyl, 12m span
-- T.12: aka Guerchais Roche T.12-1
-- http://www.flightglobal.com/pdfarchive/view/1931/1931 - 0474.html
-- http://www.flightglobal.com/pdfarchive/view/1931/1931 - 0940.html (photo)

Guerchais T.13 - [??]

Guerchais T.14 - 1933 3-seat light touring a/c, 1 x 95 hp Renault 4Pb, 1 built
- T.14: Tourer derived from the 1929 Guerchais T.8 light aircraft

After T.14, Guerchais designations seem to become non-sequential (or there are a lot of gaps!)

Guerchais T.110 - [Project] 1932 low-wing monoplane avion stratosphérique, not completed
- T.110: 1 x 690 hp Lorraine-Dietrich Orion W18 w/ Brown-Boveri supercharger, 18m span
-- http://www.secretprojects.co.uk/forum/index.php/topic,18632.msg179634.html#msg179634

Guerchais T.25 - 1936 parasol monoplane 2-seat tandem basic trainer (for SAP use), x 1
- T.25: 1 x Régnier 4 Do inline 4-cyl, prototype tested and rejected for service

Guerchais T.50 - 2-seat high-wing monoplane tourer, 1 x 95hp Salmson 7Ac, 1937*
- T.50: F-APKN, c/n n°01, *NB: Hesham says 1932, Golden Years says 1937
-- http://www.goldenyears.ukf.net/reg_F-17.htm
-- http://www.secretprojects.co.uk/forum/index.php/topic,15922.msg179985.html#msg179985

Ateliers Roche Aviation - Louis Guerchais, chief engineer
-- Ateliers Roche Aviation: aka Etablissment Roche or Ets Roche

DAG 104 - [Project] 1939 flying bomb, 1 x 23 hp Ford auto engine, 2 wind tunnel models
- DAG 104: ordered placed for flying bomb production, planned delivery in June 1940

Guerchais-Roche 'GR' Designations (Gliders)

Guerchais-Roche GR.70 - 1942 single-seat gull-winged sailplane, 17 m span, 1 built
-- http://www.j2mcl-planeurs.net/dbj2mcl/planeurs-machines/planeur-fiche_0int.php?code=679

Guerchais-Roche GR.71 - (Project) (confirm) 1939 glider/sailplane

Guerchais-Roche GR.78 - (Project) (confirm) 1938 powered aircraft

Guerchais-Roche GR.103 - 1938 licence-built Arsenal Émouchet single-seat trainer, x 150
-- NB: Hypothetical desig., usually simply refered to as SA 103 Émouchet

Guerchais-Roche GR.104 - licence-built Arsenal Émouchet single-seat trainer, x 100
-- NB: Hypothetical desig., usually simply refered to as SA 104 Émouchet
-- aka Arsenal-Roche SA 104 Émouchet

Guerchais-Roche GR.105, 1942 2-seat training glider, 18 m span, 1 built
-- http://www.j2mcl-planeurs.net/dbj2mcl/planeurs-machines/planeur-fiche_0int.php?code=677

Guerchais-Roche GR.107, single-seat training glider, 13.8 m span, 1 built

Guerchais-Roche 'T' for Type Designations (Powered Aircraft)

NB: Design of T.30-T.39 series began in 1939

Guerchais-Roche T.30 - 1942 2-seat low-wing monoplane tourer
- T.30: Powered by 90 hp conv. Ford V-8*, 10.50 m span, wooden constr.
-- http://www.flightglobal.com/pdfarchive/view/1946/1946 - 1725.html (photo)
-- * Mercury V-8 (dual magneto, alum. crankcase) suppl. by Ford Co., Paris

Guerchais-Roche T.35 - 1944 2-seat low-wing monoplane tourer
- T.35 : 1 x 140 hp Renault 4Pei air-cooled 4-cyl, 2 built
- T.35/I : 1 x 100 hp Renault 4Pei (? 110 hp 4Pgi ?), 1 built
- T.35/II ; 1945, 1 x 140 hp Renault 4P-03 (postwar 4Pei), 6 built
-- T.35/II: F-BFAY n° 1, F-BBSU n° 2, F-BFLQ cn 7,
-- NB: Avia France site says T.35/II was a 4-seater
- T.35/III: 1 x 135 hp Regnier 4 L-00, 1 built

Guerchais-Roche T.39 - 1947 3-to-4-seat deriv. of T.35 monoplane tourer
- T.39 : 1 x 145 hp Mathis G 7R radial, 9.30m span, 2 built
-- T.39: F-BEAP n° 01, F-BCEU n° 02
-- NB: Avia France & Flight 28 Nov 1946 says 175 hp Mathia G 7R
-- http://www.flightglobal.com/pdfarchive/view/1946/1946 - 2270 - 0144.html
- T.39/II: 1950, 1 x 175 hp Salmson 9ND radial. 2 built
-- T.39/II: F-BFAZ n° 01, F-BBSU n° 02

Guerchais Schwander (with furniture manufacturer, Henri Schwander)

Guerchais Schwander T-55 - 1950 4-seat deriv. of T.35 low-wing monoplane tourer
- T.55 : 1 x 160 hp Walter Minor 6-III inline 6-cyl, 1 built (n° 01, F-BFAA)
-- T.55: aka 'Guerchais-Roche T.55', crashed 5 Sept 1957 at Arbouans
-- http://www.super-mystere.net/hs003/planche/pages/03.htm (photo)


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Avions Legers Guerchais-Henriot/Avions Legers Guerchais Unnumbered Projects

Light aircraft - 2-seat T-2 devel., 45-75 hp powerplant

Light aircraft - Single-seat T-3/T-4 devel., 35-60 hp powerplant

Light aircraft - 3-seat T-5/T-8 devel., 70-100 hp powerplant

Light aircraft - 4-to-10-seat transport., 120-180 hp powerplant
-- Trait d'Union (BFAB) suggests this might be Guerchais' T.7

http://www.secretprojects.co.uk/forum/index.php/topic,15922.msg240537.html#msg240537

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I've made a few minor additions and changes to the list above.

An ebay ad mentions "Avions Hydravions GUERCHAIS-L. HENRIOT" as an article in Locomotion Aerienne: Les Ailes (9ème année), n° 450, 30 janvier 1930. Might these be some of the 'missing' Guerchais-Henriot designation numbers?

http://www.ebay.co.uk/itm/110984317946

Anyone have access to Les Ailes n° 450? Or any details on these Guerchais-Henriot hydravions?

Thanks to Hesham, the Guerchais-Henriot T.3 acrobatic monoplane and T.4 tourer project have now been added.
http://www.secretprojects.co.uk/forum/index.php/topic,15922.msg180137.html#msg180137

Thank you my dear Apophenia,


and for T-4,probably developed in the same year of T-3,for T-5,it was appeared in 1929,
also for T-9 created in 1931,and for T-12 in 1929.

Thanks Hesham ... I've now added those dates.

Very nice page, but there is a small misunderstanding about my website http://www.crezan.net/pag_aby/massot.html :
regarding the Guerchais t.9 and T.12, "CdN" means Certificat de navigabilité (Certificat of Airworthiness), not construction number c/n.

crezan said:

Very nice page, but there is a small misunderstanding about my website http://www.crezan.net/pag_aby/massot.html :
regarding the Guerchais t.9 and T.12, "CdN" means Certificat de navigabilité (Certificat of Airworthiness), not construction number c/n.

Click to expand...

Welcome! Thanks for correcting this mistake (I hadn't noticed it).

Thanks for that correction, crezan! I've now substituted 'CdN' in place of my erroneous 'c/n'. :-[

It's also possible for you to use the English abbreviation "CoA" in order to avoid any doubt

From Onera Archive,

GR.71 was a glider/sailplane of 1939,maybe a Project only ?
GR.78 was an airplane Project of 1938 ?