When is a moth a better moth? When its made of metal…. August 3, 2009
Posted by shortfinals in Aviation, Great Vintage Flying Weekend, Royal Air Force, aircraft.Tags: ADC Aircraft, aero clubs, aircraft, Aviation, Cirrus engine, Danish register, De Havilland, DeH Gipsy I, DeH Gipsy II, Denmark, DH60, DH60 Moth, DH60M, DH60T, DH82a Tiger Moth, differential ailerons, First World War, flying schools, French, Geoffrey De Havilland, Great Vintage Flying Weekend, GVFWE, Major Frank Halford, Metal Moth, RAF, Renault V-8 engine, Roy Palmer, Royal Air Force, WW1
add a comment
Geoffrey de Havilland’s line of biplane sports/training aircraft, which culminated in the DH82 Tiger Moth, began with the first flight of the DH.60 Moth prototype, at the hands of De Havilland himself, in February 1925. That aircraft, G-EBKT, was powered by a rather unusual engine, built by ADC Aircraft – the Cirrus. This consisted, essentially, of one half of a surplus WW1 Renault V-8 engine, and was, therefore, incredibly cheap. The Moth quickly established itself as the prefered equipment for flying schools and aero clubs everywhere. The Moth was so ubiquitous that soon any light aircraft was refered to as a ‘Moth’.
By 1927, De Havilland had a problem; the huge ‘pile’ of WW1 Renault engines had almost run out, and a new engine for the Moth line was needed. In conjunction with Major Frank Halford, a four cylinder, 100hp engine was designed and built for the DH60; the DeH Gipsy I.
The aircraft you can see is a DH60M Moth, built in 1929. Powered by a DeH Gipsy II of 120hp, it represents the state-of-the-art in light aeroplane design for this period. Several significant changes had been made to the original DH60, including the use of a metal tube primary structure for the fuselage, as opposed to wood (hence the ‘M’ for ‘Metal Moth’). If you look closely, you can still see that De Havilland has retained his ‘differential ailerons’ on the lower wing only, and the wings and tail are in the traditional ‘any colour so long as it is silver’ factory finish (the aero club, or individual customer, chose the fuselage colour). This fine example of the breed is seen here at GVFWE 2009, at Kemble, and is now owned by Mr Roy Palmer; it was on the Danish register, prior to being recovered to Britain.
As well as examples for the civilian market, the DH60 (as the DH60T) was sold to various military customers. The Royal Air Force was not totally convinced, however, and it wasn’t until the sweep of the wings were altered, to enable pilots to bail-out easier in an emergency, and an inverted version of the Gipsy engine fitted, that it finally adopted the Moth as the DH82a Tiger Moth. The rest, as they say, is history.
Nanchang CJ-6A, G-BVVG June 14, 2009
Posted by shortfinals in 'warbird', Aviation, Great Vintage Flying Weekend, Kemble, aircraft.Tags: 'warbird', aircraft, Albania, Aviation, Bangladesh, Bracknell, brakes, Cambodia, Chinese, CJ-6A, engine cooling gills, flaps, G-BVVG, GVFWE, Huosai-6JIA, Huosai-6JIA radial engine, Kemble, Kemble Airfield, Marlow, NAMC, Nanchang, Nanchang Aircraft Manufacturing Company, Nanchang CJ6A Group, North Korea, oil cooler, Peeking Duck Group, People's Liberation Army Air Force, PLAAF, pneumatics, Sri Lanka, Tanzania, USA, Yak-18A, Zambia
add a comment
It would be perhaps wrong to describe this Chinese trainer as ‘universal’, but with over 10,ooo built it is, indeed, popular. Despite appearances, it is not a direct copy of the Yak-18A, but has been extensively re-engineered to suit Chinese requirements by the Nanchang Aircraft Manufacturing Company. The prototype first flew on August 27, 1958, and entered PLAAF service in 1960, followed by over 3,000 examples for the Chinese armed forces. Since then, it has been exported to Albania, Bangladesh, Cambodia, North Korea, Tanzania, Sri Lanka and Zambia. Powered by a Nanchang Huosai-6JIA radial engine of 285hp, the CJ-6A is heavily reliant on pneumatics to operate flaps, brakes and start the engine. The control of various aircraft systems, such as the oil cooler and engine cooling gills are all manual, so there is a lot to manage during any flight.
The example seen here, G-BVVG, is parked at the GVFWE, Kemble and is in typical PLAAF markings. It was on the French register for a while, from 1999 to 2002, but is now owned by the Nanchang CJ6A Group of Marlow; prior to this it had been operated by the amazingly-named ‘Peeking Duck Group’ of Bracknell !
A very popular ‘warbird’, the CJ-6A is now being released in batches by the Chinese authorities, and several specialist companies in the USA are currently importing and overhauling these aircraft for re-sale.
Folland (Hawker Siddeley) Gnat June 3, 2009
Posted by shortfinals in 'warbird', Aviation, Great Britain, Great Vintage Flying Weekend, RAF, Royal Air Force, aircraft, military.Tags: 'Teddy' Petter, 'warbird', aircraft, airframe, Airshow circuit, Aviation, BAe Hawk, Charlie Sheen, Cirencester, Delta Jets, E E Lightning, English Electric, feature film, film, Fo. 144, Folland, Fuse 13, Gnat, Gnat T.1, Gnat Trainer, Hawker Siddeley, Hot Shots, instructional airframe, jet, jet warbird, Kemble, Kemble Airfield, KM, Lloyd Bridges, Midge, No 4 FTS, Postmaster, RAF, RAF Flying Training School, RAF Kemble, RAF Scampton, RAF St Athan, Red Arrows, Royal Air Force, runway, signal square, South Wales, twinkle roll, US Navy, W E W Petter, Yelowjacks
add a comment
- Folland Gnat T.1
Kemble Airfield has many interesting residents. The local aviation company, Delta Jets, is better known for it’s fleet of Hawker Hunters, but it also owns this Hawker Siddeley Gnat T.1, XP502. Currently, the Gnat is located on the old airfield ’signal square’ , a relic of the early days of flying, when a pilot would join the circuit overhead, and look down at the square, to see which runway was in use (shown by means of black ‘dumbell’ markers) and even confirm WHERE he was (the two-letter code for Kemble, KM, is still there). XP502 is in spurious ‘Red Arrows’ markings, to commemorate the fact that Kemble was the home of the ‘Reds’ for nearly 15 years, from 1969 to 1983; the last four years of which had seen the Gnats supplanted by the BAe Hawk. Indeed, the Postmaster at nearby Cirencester still sometimes gets mail addressed to ‘The Red Arrows, RAF Kemble’ – it is carefully forwarded to their present home at RAF Scampton.
Newark Liberty International May 22, 2009
Posted by shortfinals in Aviation, New York, United States, aircraft.Tags: air conditioning, Air Train, aircraft, Amtrak, Continental Airlines, Empire State Building, Manhattan, monorail, New York, Newark, NJ, PATH, Port Authority of New York and New Jersey, rapid transit, Statute of Liberty, terminal buildings
1 comment so far
Newark Liberty International - Air Train
Operated by the Port Authority of New York and New Jersey since the 1940s under a lease arrangement, and one of the busiest airports in the Greater New York area, Newark Liberty International serves as a hub for Continental Airlines and many other carriers. One of the more interesting features of the airport is the ‘Air Train’, a free rapid transit monorail system which runs between Terminals A, B and C. This is easily accessed via a series of interlocked safety doors on the upper level of each terminal. It also travels to the Airport’s own rail station where Amtrak and NJ Transit passengers alight.
Here we see a set of Air Train cars, making the smooth transit between terminals. Be warned, however; the cars are NOT air conditioned, and on a warm day in May, the passengers were already feeling the heat.
Just over the Hudson River from Manhattan, it is easy for passengers to reach hotels in the city (the airport is about 16 miles from mid-town Manhattan). Both approaches to, and departures from, this airport offer spectacular views of the New York skyline, and such features as the Statue of Liberty and the Empire State building can be clearly seen. Please choose your seat assignments carefully!
Great Vintage Flying Weekend, Kemble, May 9 – 10th May 14, 2009
Posted by shortfinals in Aviation, Great Britain, Great Vintage Flying Weekend, RAF, aircraft.Tags: 111 Squadron, aircraft, control tower, Delta Jets, EGBP, England, Great Vintage Flying Weekend, Hawker, Hawker Hunter, ICAO, Kemble, Kemble Air Day, Kemble Aviation, RAF, Royal Air Force
add a comment
Control Tower, Kemble Airfield
Well, the 2009 GVFWE has come and gone…..and it was a roaring success. Elements from previous events seemed to blend easily with the new, thanks to some excellent work by Glen and all at Kemble Aviation, (here is a shot of the control tower at Kemble, ICAO designation EGBP) . I know that those of us who were ‘carry-overs’ from previous years found ourselves thoroughly at home. Kemble, of course, is used to holding some first-rate aviation events, including an Air Day (this year a two day show) featuring some of the local Delta Jet fleet. GVWFE was re-worked to include a one-hour flying programme, in the middle of each day, which also featured sparkling displays by a Delta Jets two-seat Hawker Hunter, in the colours of No. 111 Squadron, RAF, and many other aircraft.
All in all, a great start to a ‘new’ edition of this classic event.
A short-lived company, but a long-lived Civilian April 2, 2009
Posted by shortfinals in Aviation, Great Vintage Flying Weekend, London, Second World War, Wales, aircraft.Tags: 'push-rods', A.B.C. Hornet engine, Air Show, aircraft, airports, Armstrong Siddley, Armstrong Siddley Genet Major 1A, auctioneer, auctioneer's hammer, Aviation, Biggin Hill, Cardiff Airport, Carmarthen, Civilian Aircraft Company Ltd, Civilian Coupe 2, D H Mosquito, Derby, Derbyshire, England, Flight magazine, fuselage, G-ABNT, Glynn Rees, Great Depression, Great Vintage Flying Weekend, GVFWE, hangar, Hedon, Heston, historic aircraft, Hull, Hullavington, London, municipal airports, passenger seat, plywood, plywood panelling, port, propeller, radial engine, River Humber, Second World War, Secretary of State for Air, Shipping & Airlines Ltd, South Wales, Wales, wings, wire, Yorkshire
add a comment
- Civilian Aircraft Company Coupe 2
Throughout the 1930s many towns like Derby and the Yorkshire port of Hull joined the rush towards modern transport by establishing municipal airports. Hull’s was sited about 5 miles out of town at Hedon on the banks of the River Humber, and the civic authorities tried to attract aviation concerns to the new airfield. ‘Flight’ magazine in its March 27th, 1931 issue, mentioned that the Civilian Aircraft Company Ltd. had established a small manufacturing works on the southern edge of the site and was producing a two seat aircraft. Sadly, the first example of the ‘plane, which was first shown to the public at Heston in 1929, was powered by an A.B.C. Hornet radial engine, which vibrated rather badly. The Series 2 of the Civilian Coupe had solved the engine problems by fitting the Armstrong Siddley Genet Major 1A of 100hp. The aircraft’s fuselage was so narrow that the passenger seat had to be offset slightly behind and to one side of the pilot’s (rather like the much later D H Mosquito). There was some use of metal tubing in the fuselage, but the majority of structure, including the wings, was covered with stressed plywood panelling. Technically interesting, because it was one of the first aircraft to use ‘push-rods’ to connect the controls, rather than wire (leading to crisper responses), the Coupe was the right aircraft at the wrong time, as it appeared just as the civilian market was under immense pressure due to the Great Depression. A small series of aircraft was built, but it was already too late, and ‘Flight’ noted the demise of the company in its April 15th, 1932 issue.
One of the breed survived by sheer chance; Serial No. 03, a Civilian Coupe 2, was bought by Mr Glynn Rees of Carmarthen, South Wales and hangared at Cardiff Airport. Little flying took place (a total of 130 hours only), and he stored the aircraft before the outbreak of the Second World War. The aircraft’s registration was cancelled, by order of the Secretary of State for Air, on 1st December 1946.
After being stored for more than 40 years, G-ABNT went under the auctioneer’s hammer in Wales in February 1978. It was sold to Shipping & Airlines Ltd of London, along with a quantity of spares, including wings and a propeller. Careful restoration, and a move to a hangar on the historic Biggin Hill airfield, ensured that this highly significant aircraft is still with us today. Here she is in the historic aircraft park at GVFWE, Hullavington.
Date for GVFWE 2009, 9th/10th May – Kemble Airfield March 30, 2009
Posted by shortfinals in 'warbird', Aviation, England, Great Vintage Flying Weekend, aircraft.Tags: Air Show, aircraft, aircraft type, AOP9, Auster, aviation event, Bu131 Jungmann, Bucker, CH3 Super Ace, Chrislea, Cotswold, D H 82a Tiger Moth, D.31 Turbulent, Druine, Druine Condor, Druine D.62B Condor, EGBP, England, Europe, flying display, Great Vintage Flying Weekend, Kemble Air Day, Kemble Airfield, M.38 Messenger, Miles, RAF, RAF Kemble, Red Arrows, Royal Air Force, Terry Booker, Tiger Moth, Tipsy, Tipsy Belfair
add a comment
Great Vintage Flying Weekend
The Great Vintage Flying Weekend had come to be a ‘fixture’ on the UK air show scene, that is until 2008. With the retirement of Terry Booker (Operations Director, and the man responsible for much of the excellent organisation behind the events), the event fell into a kind of stasis. Without an injection of capital, and a permanent new home (GVFWE had been a moveable feast), it was likely that Europe’s premier vintage aviation event would simply cease to exist.
With a great deal of goodwill, and some complex negotiations, it was announced just after Christmas that the event would be moving to Kemble Airfield (EGBP), the former RAF Kemble, which had once been home to the Red Arrows. The home of the highly-regarded Kemble Air Day, the Cotswold airfield had already been used before by GVFWE and was therefore a known quantity in organizational terms.
Here you can find the link for the new, official, GVFWE site; a major departure from the established pattern will be a one hour flying display to be inserted into the daily programme of events. I can safely say that everyone involved is really looking forward to a splendid 2009 event.
As an indication of the many different aircraft types which can appear at GVFWE, here is a photograph from the last Hullavington event. You can see examples of the following; Bucker Bu131 Jungmann, Miles M.38 Messenger, Auster AOP 9, Tipsy Belfair, D H 82a Tiger Moth, Chrislea CH3 Super Ace 2, Druine D.31 Turbulent, and Druine D.62B Condor .
Leopoldoff Colibri – romantic, obscure, and very French (or is that, Russian?) March 16, 2009
Posted by shortfinals in Aviation, British Isles, England, France, Great Vintage Flying Weekend, Second World War, aircraft.Tags: Abingdon, aircraft, Aviation, Aviation Federation of Morocco, biplane, Bolshevik Revolution, British, British register, coelcanthe, Continental Motors Corporation A65-8S engine, D'Arcy Aviation, diamond, Dr Saugnes, drawings, E.T.S.Leopoldoff, emigres, England, F-PCZX, First World War, fishermen, France, French, French register, G-AYKS, General Juin, genus, German, gold, Great Vintage Flying Weekend, hummingbird, Imperial Court, Imperial Russia, interplane struts, L'Amicale Jean Baptiste Salis, L.3, L.7 Colibri, La Ferte-Alais, Latimeria chalumnae, Leopoldoff, lower wing, M.J. Rousseau, Malagasy, Morocco, navigation instruments, nets, Paris, post-war, Prince Moulay Hassan, prototype, Rabat, Resident General de la France au Maroc, Russian, Russian aristocracy, salesmen, Salmson, Salmson 9Adb radial engine, Second World War, Sensenich W72CK, sesquiplane, shopkeepers, Societe des Avions Leopoldoff, Societe des Constructions Aeronautiques du Maroc, taxi driver, upper wing, William Cooper, wing dihedral, wooden propeller, WW1 markings
1 comment so far
- Leopoldoff L.7 Colibri
Sometimes you find something that surprises you – immensely. It is rather like panning for gold, and coming up with a huge, rough diamond. At Abingdon, during an early phase of the GVFWE event, I came across this pretty aircraft; it was rather like some Malagasy fishermen hauling up their nets and finding a coelcanthe (Latimeria chalumnae).
The genesis of the Leopoldoff is shrouded in the mists of the Bolshevik Revolution. It is said that the plans of the original aircraft were drawn up prior to 1917 by E.T.S. Leopoldoff, who, when the Imperial Russian regime fell, hurriedly left the country. Like many other Russian emigres, he ended up in Paris (French had been the preferred language of the Imperial Court, and most of the Russian aristocracy). There, the Russian community scratched out a living as best they could; some were shopkeepers, some salesmen, and some, as in Leopoldoff’s case, became taxi drivers. He finally persuaded a French company to build a prototype to his drawings, which flew in September, 1933. Progress was slow, with the first production machine appearing in 1937. Minor variations gave rise to changes in designation, with the main version being the L.3. Leopoldoff had formed his own company by now (Societe des Avions Leopoldoff), which undertook to build this pretty aircraft as a two seater for club or touring purposes. Just over 30 aircraft were produced before the Second World War broke out.
The L.7 Colibri (named after a genus of hummingbird) is a post-war modification of an L.3. The original aircraft would have been fitted with a Salmson 9Adb radial engine of 45hp, leaving it rather underpowered. Instead, the L.7 now has the ubiquitous Continental Motors Corporation A65-8S engine, of 65hp, driving a wooden Sensenich W72CK propeller – a much better proposition. You can just make out that the L.7 is a sesquiplane (or unequal span biplane). Some Leopoldoff aircraft were ‘normal’ biplanes, and you can see that this has given rise to an odd appearance. The attachment points for the interplane struts on the upper wing have stayed the same, which means the struts now make an acute angle with the shorter, lower wing. Note the pronounced wing dihedral. There are echoes of WW1 aircraft in this design; indeed, one of the few examples still extant (in the collection of L’Amicale Jean-Baptiste Salis, at La Ferte-Alais in France) is painted in German WW1 markings.
Post-war, six more aircraft were built in Morocco by Societe des Constructions Aeronautiques du Maroc, and one of these made a noteworthy flight on the 3rd July 1948, when it successfully completed a 600km course as part of an aviation rally organised by the Aviation Federation of Morocco. The Leopoldoff (powered by a Salmson radial) landed safely back at Rabat, where the crew of Dr Saugnes and M J Rousseau were greeted by the Resident General de la France au Maroc, General Juin and Prince Moulay Hassan. It was the smallest aircraft in the rally, and had no special navigation instruments!
This L.7 is the only one on the British register, and was owned by D’Arcy Aviation in the 1970s (it had been on the French register, at one stage, as F-PCZX). It is now in the capable hands of Mr William Cooper. Long may she grace British skies.
Air Speed Indicator – the root of it all March 9, 2009
Posted by shortfinals in Aviation, Great Vintage Flying Weekend, aircraft.Tags: 20th century, air speed indicator, aircraft, aircrew, airliner, Airspeed, altitude, ambient pressure, analogue, ASI, atmospheric conditions, Aviation, back-up, basic six, bulkhead, cockpit, commercial airliner, De Havilland, dead reckoning, DH 84, DH 85, digital sensors, Dragon, electric torch, end plate, flaps, flight envelope, French, French enginer, fuselage, G-AIYS, glass cockpit, graduated scale, GVFWE, Henri Pitot, Keevil, Leopard Moth, never exceed speed, night flying equipment, pilot, pitot tube, port, ram-air pressure, Royal Air Force, spring wire, stall, stalling speed, static pressure, stick and string aircraft, undercarriage
add a comment
Air Speed Indicator!
Every since the first fragile ’stick and string’ aircraft staggered into the sky during the first years of the 20th century, the pilot has needed to know just how fast he is going. Not only because he uses this value to help him determine his position by ‘dead reckoning’ (time x speed = distance run), but also when he is entering dangerous areas of the ‘flight envelope’ of his aircraft. Being close to the stalling speed of the machine is lethal, but also there is a ‘never exceed speed’, above which lies structural failure. There are various other speeds which it is important to know, such as the safe speed at which flaps may be deployed, or the speed at which the undercarriage must not be extended (if retracted, of course).
Modern aircraft often have a ‘glass cockpit’ display which gives readouts of airspeed from digital sensors, but even these have an old-style analogue dial, as a back-up. The usual two inputs needed to produce an ASI readout are the static and ram-air pressures, one being the ambient pressure (which changes with altitude and atmospheric conditions) and the other being the pressure due to the aircraft’s movement through the air. These are usually obtained from a Pitot tube (named after the French engineer, Henri Pitot), located a little distance from the fuselage, to avoid air disturbances. The ASI became part of the ‘basic six’ instruments ,which were instantly recognizable by any Royal Air Force aircrew member from the 1930s onwards
Up until the mid-1930s there was another method – crude but adequate – used in some low-performance machines. Here we see a photograph of the air speed indicator on a DH 85 Leopard Moth , G-AIYS, parked at GVFWE, Keevil. All it consists of is a flat plate, with a few holes drilled in it, secured to a length of spring wire. As the air pressure builds up due to movement of the aircraft, the plate is forced backwards, giving a readout of the estimated speed on the graduated scale. There is even a red section, indicating when you are approaching the stall! Needless to say, this device IS crude, but it works well enough. The Leopard Moth’s bigger brother, the De Havilland DH 84 Dragon airliner has a similar indicator, and I dare say that this was the last time a commecial airliner flew with such a device. By the way, the first time I entered the cockpit of a DH 84 Dragon, I noticed an electric torch clamped to the left hand side of the bulkhead. When I asked what it was, I was told that it was an essential piece of the night-flying equipment….at night, you shone it out to port, and illuminated the graduated scale between the wings to find out your airspeed!
The rare made commonplace – G-AIYS, DH 85 Leopard Moth March 6, 2009
Posted by shortfinals in Aviation, Great Vintage Flying Weekend, Museums, Royal Air Force, Second World War, aircraft.Tags: aeronautical engineer, Air Show, aircraft, aircraft disposal sales, airfield, Aston Martin, Baghdad, Biggin Hill, communications aircraft, De H 85, De Havilland, De Havilland Gipsy Major 1 engine, DH 80, Egypt, England, fabric-covered, folding wings, Geoffrey De Havilland, Gipsy Major engine, Great Vintage Flying Weekend, GVFWE, hangarage, impressed aircraft, Iraq, Keevil, King's Cup Air Race, Leopard Moth, liaison type, Mr Ronald Gammons, Mrs Valery Gammons, oil companies, plywood, prototype, Puss Moth, RAF, RAF Kemble, RAF Museum, Scotland, Second World War, Sir William James Denby Roberts, steel tube, Strathallan Collection, Surrey and Kent Flying Club, Torquil Norman, Victor Guantlett, Wiltshire, WW2
add a comment
- The rare made commonplace – De Havilland DH 85 Leopard Moth
Geoffrey De Havilland was a skilled aeronautical engineer, of that there was no doubt, but he was also a passionate lepidopterist, and named many of his early creations after various species of moth. The Leopard Moth was designed in the 1930s to provide a relatively swift (c. 130 mph) ‘gentleman’s aerial carriage’ (one pilot, two passengers). The prototype won the King’s Cup Air Race in 1933 at over 139 mph, flown by Geoffrey De Havilland himself. The fact that De Havilland had forsaken the fabric-covered steel tube formula of the Leopard Moth’s predecessor, the DH 80 Puss Moth, and instead built a strong, sturdy ‘box’ from plywood, giving a structure of lower weight, enabled the aircraft to fly faster and further. The DH Gipsy Major 1C engine puts out around 142 hp, which gives a cruise speed close to 120mph, and a range of over 700 miles.
