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P-51 D Mustang replica

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How I got into aircraft building: a short personal history


Already in 1993 I was dreaming of building and having my own airplane. At that time I graduated university since a couple of years and I was flying as flight attendant. Next to this I was training for my commercial pilot license. I used to buy Kit Plane Magazine each time I visited the USA, reading it from front to back. Pretty soon my attention was drawn to a very small add from a Mr. Chris Falconar: P-51 drawings... 1- and 2-seater, 70% scale, for an info package sent $10,-. I mailed the money, and within short time I received the requested package. Wow!!! My only problem then was the fact that I was not ready for building it... yet.


Through the years building and owning my own airplane(-s) never left my mind for a long time, and eight years later I decided the time had come to cut the knot: I bought the drawings, thinking if they are as good as advertised, I am going to build this Mustang. Most probably you won’t be surprised if I tell you that they are good indeed!


Not having been able to fly the aircraft, so far the only real downside of the SAL Mustang is – in my opinion - the fact that it is not a full-scale Mustang. To be honest, I prefer these things the original way and size. However, the fact that for an average civilian it is already hardly possible to afford one hour of flighttime on a real Mustang, let alone own and pay maintenance costs, gives me enough peace of mind to accept the scale-down situation. What strengthened me in my choice is the statement from guys who have flown both the real thing and de SAL Mustang; they say handling characteristics are very similar to the original... Well, this promises a lot of fun in the future!


I know there are several other P-51 D Mustang replica drawing sets and even kits on the market, but in my opinion of all these 70% scale projects, Falconar’s Mustang resembles the original the best. You can read more about this replica in the chapter about its history. Another major advantage is the fact that since there is nothing better than sharing the fun of flying with somebody else, you can build a 2-seater version. This is also reason for choosing the Mustang in general, and this one in particular: the P-51 is the only World War II fighter that can be turned into a two-seater version without totally ruining the appearance of the original design.


So now you start browsing through my site and you notice that there’s more going on in my workshop than just building a Mustang... Your next question might be “Why two projects at one time? Is this guy crazy, impatient or what else is wrong?”


Impatient? Of course! There is so much to do and so little time to do it. Life’s too short. Crazy? You might call it that way, but I’ll deny! If you call it plane-crazy we might start a discussion. Okay, I am just kidding. To be frank, I look at the Mustang not only as an aircraft I really like to build and fly, but also as the project by which I gain enough building experience and by which I’ll learn the various skills needed to build an aircraft completely by myself.


Being a pilot I also want to fly different aircraft, travel with them to various places and in the meantime enjoying the fun of flying. Today’s world gets smaller thanks to aviation, television, internet and various other types of media. In my eyes the “Grand Era of the Adventure of Flight” lies already years and years behind us. I am earning my living as airline pilot, and I am having a lot of fun doing so. But real flying…? I think most of all it happened before my time, before the fifties of last century. Maybe I was born late, but on the other hand I think: why not relive this time myself? In this century! Yes!!! That’s why I can’t wait to finish one aircraft at the time. This is why I also had to start a second project next to the Mustang. The Mustang will provide me/us with the thrill of flying, but the other one will be the aircraft which will take us into the big adventure of flying. Once it is finished, the second part of our website will become active as well, and you will be able to share our adventures via the internet. We’ll let you share the fun and give you the impression to be part of our team. By this time you will also be explained why we named our website “SOS-Eisberg”. Up till then a lot of work still has to be done!


Although all the building activities are done myself, Marc, I use the word “we” on a regular basis, because in future the big flying adventures will not be done just by me; it will be teamwork. There is a lot going on here, and we keep you posted via this site.

Technical details

  North American P-51 D Mustang SAL P-51 D Mustang 2 seater*
Length 9.83 m 7.16 m
Height 4.17 m 2.13 m
Wingspan 11.29 m 7.57 m
Wing area 21.66 m² 10.30 m²
Wing loading - 19.8 Lbs/Sq Ft (Max)

Empty Weight 3463 kg 646kg
Max Takeoff Weight 5488 kg 989 kg

Powerplant (Packard) Merlin Automotive
Brake Horsepower 1649 hp 250-300 hp

Fuel Capacity 1018 Ltr 117 Ltr
with drop tanks 1851 Ltr ?? Ltr
Fuel consumption - ±35 Ltr/Hr
Range 1155 Nm (no drop tanks) -

Service Ceiling 41.900 Ft not proven
Max Cruise Speed 294 kts at 20.000 ft 212 mph Sea level
Never Exceed Speed - 252 mph
Design Stall Speed Flaps - 60 mph

*) Definitive data can only be provided after the aircraft has been tested

Facts

  • Did you know that a total of 14.857 Mustangs have been built in 5 main versions
  • The P-51 D/K variant was the one most built: 9.602 airframes
  • The bubble canopy is in fact a British invention
  • The Mustang’s original Allison engine was not powerful enough, but thanks to the British test pilot Ron Harker, the British decided to install a Rolls Royce Merlin 61s series engine in the earlier type, the basis was laid for the Mustang’s success
  • The location of the engine radiator together with the airflow through the cowling is one of the most successful designs in cooling.
  • The P-51 has been in military service from late 1942 until 1978, not only in the US Air Force and the RAF, but after World War II also in many other countries
  • Less than 300 examples of the type are still existing today, of which about 145 are in flying condition
  • At the last gathering of Mustangs in the USA there were 77 aircraft present (2007)
  • At this moment there are almost 10 different replica kits or plans on the market, its main materials varying from aluminum, wood or composites
  • Falconar sold more than 800 sets of plans, but so far only a few are really finished and ready to fly
  • Read the article from Chris Falconar called “Why wood?”

With the development of synthetic resin adhesive, Fiberglas and Hipec finishes, with near permanent durability, the use of wood as a construction material becomes very advantageous. New glues do not deteriorate - even metals are being glued together in aircraft construction.

Wood structures are waterproofed by a new finishes, amongst which “Hipec”. Fibreglass covering can be applied with Hipec over plywood surfaces. The well tested and proven Lincoln cloth and Hipec is used instead of cotton and dope. Sun, heat, cold, vibration or rain will not damage a properly finished wood airplane of today.
Moreover, wood structures lend them-selves to smoother exterior contour than does metal. Laminar flow can easily be achieved without worry of recessing rivet heads.
Proponents of metal aircraft build the fuselage and tail of steel tubes. However, then they end up using wood for the wing and its spar, the most important stressed item in the whole aircraft! Several of the fastest, most popular, personal and business aircraft in America today use wood in the wing structure.
For the amateur, wood is easy to use, cut and glue. There is no need for a welding course (…), rivet gun, bend brake, shrinkers or special inspection devices. Wood is cheaper to buy and quicker to assemble into a living airplane.
Remember, wood is:
  1. Low in cost,
  2. Very easy to work with,
  3. Easy to glue and assemble,
  4. Excellent in strength-weight ratio,
  5. Very weatherproof when well coated
  6. Has good insulating and noise dampening properties,
  7. Does not have fatigue problems common with metal structures,
  8. It is non corrosive.
Engineers have considered wood as a superior structural material for use in items such as: helicopter blades, wing spars, bridges, railroad cars, trailers, ships (old and new), masts, ladders, houses and buildings, high performance jet and piston military and civilian aircraft and many other applications.

(Article borrowed from Chris Falconar.)