Friday, June 15, 2018

Engine walkaround vol.24 : Daimler-Benz DB602

Subject: Daimler-Benz DB602 
Location:Musée d'lair et de l'espace, Le Bourget, Paris, 2015.
Comments: The Daimler-Benz DB 602 was a German diesel cycle aero engine designed and built in the early 1930s. It was a liquid-cooled upright V16, and powered the two Hindenburg class airships. It has roughly the same displacement and weight of the Beardmore Tornado, which was used in the ill-fated R101, but has almost twice the power of the Tornado, showing Daimler-Benz's superior knowledge regarding diesel engine construction. Also, these engines, under designation MB 502, powered four Schnellboots of 1933 series S10...13 (three engines on each). Then, the engine was modified into V20 MB 501 of 2000 hp that had a variety of applications.

Friday, June 8, 2018

Aircraft Walkaround vol.95: North American F100 Super Sabre

Subject: North American F100 Super Sabre
1) F-100D: 56-3440 – Steven F. Udvar-Hazy Center, Fairfax County, Virginia.
2) F-100F: 56-3837 – National Museum of the United States Air Force, Wright-Patterson AFB, Ohio.
3) F-100F: 56-3944 United States Air Force – Flugausstellung Leo Junior, Hermeskeil, Germany.
Comments: The North American F-100 Super Sabre is an American supersonic jet fighter aircraft that served with the United States Air Force (USAF) from 1954 to 1971 and with the Air National Guard (ANG) until 1979. The first of the Century Series of USAF jet fighters, it was the first USAF fighter capable of supersonic speed in level flight. The F-100 was designed by North American Aviation as a higher performance follow-on to the F-86 Sabre air superiority fighter. The F-100D aimed to address the offensive shortcomings of the F-100C by being primarily a ground attack aircraft with secondary fighter capabilities. To this effect, the aircraft was fitted with autopilot, upgraded avionics, and, starting with the 184th production aircraft, AIM-9 Sidewinder capability. In 1959, 65 aircraft were modified to also fire the AGM-12 Bullpup air-to-ground missile. To further address the dangerous flight characteristics, the wing span was extended by 26 in (66 cm) and the vertical tail area was increased by 27%.The first F-100D (54–2121) flew on 24 January 1956, piloted by Daniel Darnell. It entered service on 29 September 1956 with the 405th Fighter Wing at Langley AFB. The aircraft suffered from reliability problems with the constant speed drive which provides constant-frequency current to the electrical systems. In fact, the drive was so unreliable that the USAF required it to have its own oil system to minimize damage in case of failure. Landing gear and brake parachute malfunctions claimed a number of aircraft, and the refueling probes had a tendency to break away during high speed maneuvers. Numerous post-production fixes created such a diversity of capabilities between individual aircraft that, by 1965, around 700 F-100Ds underwent High Wire modifications to standardize the weapon systems. High Wire modifications took 60 days per aircraft at a cost for the entire project of US $150 million. In 1966, the Combat Skyspot program fitted some F-100Ds with an X band radar transmitter to allow for ground-directed bombing in inclement weather or at night.The F-100F two-seat trainer entered service in 1958. It received many of the same weapons and airframe upgrades as the F-100D, including the new afterburners. By 1970, 74 F-100Fs were lost in major accidents.



Thursday, May 31, 2018

Work in progress vol.24: North American F100D Super Sabre

North American F100D Super Sabre
US$ 150,00 plus shipping
Injected plastic model, with metal landing gear, photo etched metal parts and waterslide decals.
This is trumpeters 1/32 scale F100D Super Sabre on the workbench. I decided to add a few extra parts. I got AMS F.O.D. cover and Aires exhaust detail set. Bellow you see some comments of the work done on this beautiful kit. 

 Here you see Aires Set for the engine exhaust
AMS Resin F.O.D. cover.
Lets get started:

First i decided to repair the ladder. I found easier to get all three parts together to make a sort of a gig to get all aligned. 
Here you have the ladder completed and painted with a primer coat of dark grey. It will be weathered latter.

AMS resin F.O.D. is a nice piece, but my sample was a little bit soft and i got worried that painting and decal application would give me some troubles, so i made a resin copy of the part. 

Did i mentioned that i hate vinyl tires? In my tropical environment, these parts start to melt and eventually they destroy the plastic around them. So i made resin copies of the kit's wheels and tires.

Here are the completed set of wheels for the F100, with the hub already painted in aluminium and weathered with black.
Here are the main wheels painted an lightly weathered.

Step 1 of the construction is the ejection seat. Although there are some really nice resin replacements, i decided to go on with the kit part. Careful construction and painting resulted in a nicely detailed piece for the model.  

Trumpeter did a terrific job on the cockpit. Overall detail is fantastic an fit is nearly perfect!

Here you see the finished cockpit. No aftermarket stuff! Simple modelling with Vallejo acrylics and 3-0 paint brush.

I decided to display the engine outside of the kit. So i made a resin copy of the afterburner section with a FOD cover applied to it. This part will be placed on the plane so i can have a completed engine to put on a stand. 

Here you see my basic material for detailing. As usual, i highlight the details with the 0.3mm pencil and then i paint them with a variety of colors from the Vallejo acrylics line.

Here is the final result under a coat of future. A matt coat will be added later in the construction.

Another weathering process is a pin wash. After highlighting the details with my 0.3mm pencil, i use a dark wash from the Mig range of modeling materials.

Here you se the wash applied to the speed brake. I applied the paint over the rivets and on the panel lines.

What i like about these Mig products is that you don't need to use solvent to remove the excess of paint. Just a cotton stick rubbed over the paint is enough to get the final result.

I use interior green for the wheel wells doors. Not sure if that is correct. Bert Kinsley's F100 detail and scale monograph indicates that several planes have these doors in plain aluminium. 

Here are the gun covers and the ammunition belts also weathered.

The ammunition belts placed inside the fuselage. These will be left open on the finished kit.

Here is one of the wings ready. It is a masterpiece of modeling engineering. Fit is fantastic! All the flight controls move and the detail on the leading edge slat is really nice.