Hendy Aircraft Company Designations

Apophenia

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Basil B. Henderson (1902-1955) was on the technical staff of AV Roe in 1924-28. In 1928, he formed the Hendy Aircraft Company along with HA Miles (who had worked in the stress office at Avro). Initially, Hendy Aircraft was based out of a small shed at the Shoreham Aerodrome, Brighton. Henderson and Miles were the only full-time staff.

Hendy aircraft were all designed by Henderson with HA Miles performing stress work.* An early association was with Edgar Percival who first flew the Hobo (Oct 1929) and, as a customer, ordered the work on the Hendy 302.

There was also a long association between Henderson and George Parnall. The Hendy 302 was built by George Parnall & Company Limited at Yate (outside Bristol). It was also intended that the 1931 Hendy 311 project would be built by Parnall.

In 1935, the Hendy Aircraft Company was acquired by Aero Syndicate Ltd which had also bought up Kingston upon Thames-based Nash and Thompson (makers of Frazer Nash turrets). Both firms were then sold on to Parnall along with all assets, patents, etc. The resulting new firm was entitled the Parnall Aircraft Ltd.

At Parnall, Henderson continued work on aircraft designs which, at first, retained the Hendy name. However, the Parnall name would later be applied to the prototype 3308 Heck and its production variant. The Parnall 382, a Heck military trainer derivative, was Henderson's last aircraft design (and the last aircraft built by Parnalls).

During WW2, Basil Henderson focused on Frazer Nash turrets. That must have brought his work to the attention of Frazer Nash's main rival, for he moved to Boulton Paul Aircraft in 1950 to co-ordinate "sales of powered controls and other hydraulic devices. That experience with hydraulics led Henderson to the Denison Engineering Company of Columbus, Ohio, in 1953.**

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* According to a letter to Flight by EW Percival after Henderson's death in 1955. (In the same edition, WEW Petter acknowledged that Westlands constructing the Hendy Heck prototype influenced his wing design for the Lysander.)
Flight 9 Dec 1955, pg 878
http://www.flightglobal.com/pdfarchive/view/1955/1955%20-%201755.html

** From Henderson's obituary in Flight, 25 Nov 1955
http://www.flightglobal.com/FlightPDFArchive/1955/1955%20-%201676.PDF

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Apophenia

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Hendy Aircraft Company Designations

It has been suggested that Hendy designations were a mixture of design year and type number -- eg: the 281 Hobo would be the first design of 1928, the 302 would be the second design type of 1930. The problem with this theory is that the 302 was produced in 1929 ... but perhaps Hendy Aircraft was just working ahead of schedule?

Hendy Aircraft Company Designs

Hendy 281 Hobo - 1929 single-seat low-wing monoplane light a/c, x 1
- Hendy 281 Hobo: 1 x 35 hp ABC Scorpion II 2-cyl HO, x 1 (G-AAIG)
-- Built by Hendy Aircraft Co., first flight by Edgar Percival
-- http://aviadejavu.ru/Images6/MY/MY77-6/28-2.jpg
-- http://www.flightglobal.com/FlightPDFArchive/1929/1929-1%20-%201709.PDF
- Hendy 281 Hobo: 1934 updated & re-engined prototype* [?? 281A ??]
-- * Revised u/c, mass balance ailerons, 90 hp Pobjoy Cataract
-- http://airspot.ru/catalogue_image/filename/20888/hendy281-5.jpg
-- http://www.flightglobal.com/FlightPDFArchive/1934/1934%20-%200707.PDF
-- Hobo destroyed 30 Aug 1940 by German bombing at Lympne Aerodrome

Hendy 301 -- [??]

Hendy 302 -- 2-seat low-wing cantilever monoplane, span 10.67 m, x 1
- Hendy 302 : G-AAVT 105 hp Cirrus Hermes I, orig. w/ open cockpits
-- http://www.aviastar.org/pictures/england/hendy_302.jpg
-- http://www.flightglobal.com/FlightPDFArchive/1930/UNTITLED0%20-%200986.PDF
-- http://www.flightglobal.com/FlightPDFArchive/1930/UNTITLED0%20-%200988.PDF
-- http://www.flightglobal.com/FlightPDFArchive/1934/1934%20-%200707.PDF
- Hendy 302A: 1933 rebuild by C S Napier, 130 hp Cirrus Hermes IV
-- 3V: http://static.rcgroups.net/forums/attachments/1/1/9/4/9/2/a2349070-237-Hendy%20302.jpg?d=1234954108
-- Hendy 302A: 1937 test bed for Cirrus Major II, wfu Gravesend, 1938
-- http://www.aviastar.org/pictures/england/hendy_302.jpg
-- http://www.flightglobal.com/FlightPDFArchive/1937/1937%20-%202501.PDF

Hendy 311 -- [Project] 1931 (with the plans for Parnall to build)
- Hendy 311: Said to be a three-seat version of the Hendy 302

Hendy 3301-3302 - [??]

NB: The June 1933 Meccano Magazine says "Hendy 3302 is a low wing monoplane [which] has now been built". That '3302' is almost certainly a typo for the sole Hendy 302.

Hendy 3303 - [Project] 1933 tandem 2-seat cabin monoplane racing a/c
-- http://www.secretprojects.co.uk/forum/index.php/topic,23706.0.html

Hendy 3304-3307 - [??]

Hendy 3308 Heck
- Hendy 3308: As planned,* Napier Javelin (presum. 165 hp Javelin IA)
-- * See Flight, 17 Aug 1933, pg. 824
- Hendy 3308: Prototype G-ACTC, 200 hp DH Gipsy Six, flown July 1934
-- Designed for Whitney Straight, built by Westland, scrapped 1937
- Parnall Heck : Renamed 3308, Dowty u/c locked down and trousered
- Parnall Heck 2C : 3-seat prod'n a/c, fixed spatted u/c, x 5
-- aka Parnall Hendy Heck
- Parnall Heck III: See Parnall 382 below

Parnall 381 - [Project] 1938-39 Twin-engined gun turret test a/c
- Parnall 381: Alt. dorsal/ventral turret position of 2-cannon FN turrets
-- http://www.secretprojects.co.uk/forum/index.php/topic,20030.msg194706.html#msg194706

Parnall 382 ( the Parnall entry for Spec. T.1/37 ) span 10.21 m, x 1
- Parnall 382: 1 x 200 hp DH Gipsy Six
-- http://www.airwar.ru/image/idop/other2/parnall382/parnall382-1.jpg
-- 3V: http://smm.solidmodelmemories.net/Gallery/albums/userpics/normal_PARNALL_TYPE_382.jpg

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Apophenia

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Excellent. Thanks Robin!

Now, how did those posts not come up in a forum search for "Parnall 381" ? ???
 

robunos

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What board were you on when you searched?

cheers,
Robin.
 

Apophenia

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"Entire Forum". Just a search engine glitch, I guess.
 

robunos

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Hmmm, worked ok for me,...mind you, this forum's serach engine isn't the best...

cheers,
Robin.
 

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