• Hi Guest! Forum rules have been updated. All users please read here.

Guerchais Designations

Apophenia

ACCESS: Top Secret
Senior Member
Joined
Jul 25, 2007
Messages
2,775
Reaction score
1,281
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)


___________________________________


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

___________________________________
 
Last edited:

Apophenia

ACCESS: Top Secret
Senior Member
Joined
Jul 25, 2007
Messages
2,775
Reaction score
1,281
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?
 

hesham

ACCESS: USAP
Senior Member
Joined
May 26, 2006
Messages
27,996
Reaction score
5,282
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.
 

Apophenia

ACCESS: Top Secret
Senior Member
Joined
Jul 25, 2007
Messages
2,775
Reaction score
1,281
Thanks Hesham ... I've now added those dates.
 

crezan

I really should change my personal text
Joined
Mar 14, 2013
Messages
2
Reaction score
0
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.
 

Apophenia

ACCESS: Top Secret
Senior Member
Joined
Jul 25, 2007
Messages
2,775
Reaction score
1,281
Thanks for that correction, crezan! I've now substituted 'CdN' in place of my erroneous 'c/n'. :-[
 

crezan

I really should change my personal text
Joined
Mar 14, 2013
Messages
2
Reaction score
0
It's also possible for you to use the English abbreviation "CoA" in order to avoid any doubt
 

hesham

ACCESS: USAP
Senior Member
Joined
May 26, 2006
Messages
27,996
Reaction score
5,282
From Onera Archive,

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

 

Similar threads

Top