Friday, April 21, 2017

Aircraft walkaround vol.79: Bell UH-1A Huey

Subject: Bell UH-1A Huey
Location: Intrepid Air, Sea and Space Museum, New York, USA, 2014.
Comments:The Bell UH-1 Iroquois (nicknamed "Huey") is a military helicopter powered by a single turboshaft engine, with two-blade main and tail rotors. The first member of the prolific Huey family, it was developed by Bell Helicopter to meet a United States Army's 1952 requirement for a medical evacuation and utility helicopter, and first flew in 1956. The UH-1 was the first turbine-powered helicopter to enter production in 1960 for the United States military, and more than 16,000 have been built since. The Iroquois was originally designated HU-1, hence the Huey nickname, which has remained in common use, despite the official redesignation to UH-1 in 1962. The UH-1 first saw service in combat operations during the Vietnam War, with around 7,000 helicopters deployed. The Bell 204 and 205 are Iroquois versions developed for the civil market. The  HU-1A was the Initial Bell 204 production model, redesignated as the UH-1A in 1962 with 182 units built.

Friday, April 14, 2017

Aircraft walkaround vol.80: Sikorsky HH-52 Sea Guard

Subject: Sikorsky HH-52 Sea Guard
Location: Intrepid Air, Sea and Space Museum, New York, USA, 2014
Comments: The Sikorsky HH-52 Seaguard (company designation S-62) was a single turbine engine, three-blade rotor amphibious helicopter. Originally developed as a commercial venture by the Sikorsky Aircraft Corporation of Stratford, Connecticut, it was used by the United States Coast Guard primarily for air-sea rescue. The HH-52 has been replaced by non-amphibious types such as the HH-65 Dolphin, which rely solely on the use of a winch from a low hover to conduct rescue operations.A number of S-62s were bought by the US Navy Bureau of Aeronautics for the US Coast Guard for use as a search and rescue helicopter. Initially designated HU2S-1G Seaguard, it was re-designated as the HH-52A Seaguard in 1962.The HH-52A used a boat hulled shaped fuselage, smaller but similar to the US Navy's SH-3 (Sikorsky S-61), and was employed aboard the larger Coast Guard cutters and icebreakers. The S-62 used a single 1,250 hp (930 kW) General Electric T58-GE-8B turboshaft engine, a derated version of the T58-GE-10 powerplant used on the larger twin-engined SH-3; and a 1,050 hp T58-GE-6 derated to 670 hp, moving the same main and tail rotor as S-55 Model, in the prototype.The turbine powered S-62 could carry more weight and fly faster than the H-19 (S-55). The aircraft was first conceived and designed to be amphibious so that flotation gear would not be required for over water flights, and rescues could be made by landing on the water. The fuselage is watertight for landings on water or snow. Two outrigger floats resist pitching and rolling on the water. Although the HH-52A looks very different from the Sikorsky H-19, it used many of the same components.

Friday, April 7, 2017

Work in progress vol.21: North American X-15A2 (UPDATED!)

North American X-15A2
Special Hobby
US$55,00 plus shipping
Injected plastic model with  resin parts and waterslide decals.
This is Special Hobby's 1/48 scale X-15A2 under construction. As a limited run kit, you have to deal with some special problems. First you will work with resin parts, witch is not a big deal, but you have to take extra care with the very small parts. Also, get ready to some serious fitting and sanding of the major assembling parts. Trough the next pictures i will show how i will build my X-15 out of the box.

1) The ejection seat: Made out of three resin parts, careful painting will reveal all the nice details.

2) The cockpit is next. You get several small parts for the control sticks. Again, careful painting shows all the nice details.

3) Adding the seat to the cockpit makes a nice combination.

4) Next i built the ground dolly. Several small parts turns it into a nice replica of the real ground transport device used specially after landing.

5) Now with some of the details completed, i turn my attention to the fuselage. To glue the rocket engine bell resin part to the fuselage i added some plastic parts to help hold it in place.

Then i glued the resin part. Fit was not that good, so i used superglue as filler. This led me to a lot of sanding and some detail around the engine bell was lost.

6) Once everything was sanded, the fuselage was done. Masking of the previously painted details was done in order to start painting.

7) The nose area received a metallic finish around the reaction control exhausts using alclad colors.

8) The model received an overall coat of Tamiya Nato Black (XF-69). Then some panels were paintd with Tamiya Gun Metal mixed with XF-69.

9) The paint job was sealed with Future. Then a pin wash was done with Humbrol light grey enamel.

10) The model was left aside to dry. Some detais were then completed, including the external fuel tanks...

the canopy...

and the wheels.