Blue Sky

Già postato! Hiller flying cranes project In 1949 the company built and tested the Hiller Powerblade, the world's first hot-cycle pressure-jet rotor. Hot exhaust gases ducted through various Powerblades produced greater efficiency, which was further boosted by the use of "tip burning", a term describing the combustion of fuel at the blade's exhaust nozzle. However, even this arrangement yielded substantially less propulsive efficiency than was obtainable by mounting jet engines right at the rotor blade tips. In 1950, therefore, Hiller abandoned the pressure-jet approach to tip propulsion and dedicated his company to experimentation with tip-mounted engines. Over the next fifteen years, Hiller actively pursued the construction of tip-powered flying cranes with a variety of jet engines at their blade tips. In 1951, the company offered the Army a midsize flying crane called the "Aerial Carryall" or "Flying Truck". It also responded to a Navy request for an aerial-resupply helicopter with the huge "Class HC Heavy Lifter", a collapsible flying crane of tubular construction. Neither of these efforts reached the prototype stage. The Army requested a design study for a flying crane with a 60m rotor in the mid-1950s. Hiller's response was BARC, an acronym for Besson's Aerial Railhead Crane. Named for Major General Frank S. Besson, chief of the Army Transportation Corps, this proposal similarly failed to find support. Neither did a series of parametric studies for a variety of tip-engined flying cranes that Hiller prepared in response to a 1955 military request. By decade's end, it appeared that Hiller's continuing tip-propulsion efforts might at last pay off. Prompted by this promising body of exhaustive research, including thousands of hours of tip-powered rotor testing on Hiller whirlstands, the Army solicited industry bids for a tip-turbine-powered flying crane in the Hiller mold. Clearly favored to win a contract, Hiller teamed with Continental, manufacturer of the J69 turbojet engine. Although the Hiller-Continental team won the initial contract, funding for this Army program was cut in the early 1960s before a prototype was produced. Company hopes for giant tip-powered helicopters revived briefly in 1965 when the National Aeronautics and Space Administration considered sponsoring a Hiller flying crane to recover Saturn V moon booster first stages during Project Apollo. Aerial recovery of this spent first stage, which weighed up to 400 tons, dictated that the Hiller/NASA recovery vehicle be the largest aircraft of any kind yet proposed. The resulting design featured a gross weight of about a 450t and a rotor more than 100m in diameter. Powered by two or more jet engines per blade, this rotor would have turned at 60 rpm, presenting the illusion of slow motion to observers below. As laid out, the Hiller/NASA flying crane would loiter at 3000m some 750km downrange from Cape Kennedy. Sighting the moon booster descending by parachute, it would use special recovery gear to snag the spent rocket and winch it securely in. If the first pass was unsuccessful, sufficient time would remain for two more attempts before the booster was too near the ocean's surface for another try. Expensive as such a helicopter would have been, the huge aircraft would have paid for itself with the first several recoveries. But long-range planning for the nation's space program was beginning to favor the concept of a reusable space shuttle over single-use rockets, and this recovery helicopter was not funded. Although Hiller never realized the long-held dream of flying crane production for want of government sponsorship, this program did have conspicuous successes. The comprehensive body of research it generated has paved the way for such helicopters to be built in the future, eliminating every real or imagined obstacle to their construction. This program also fostered the development of two generations of the Hiller HJ-1 "Hornet", mentioned above. Aviastar

This is the color version of the squadron patch for the 78th Fighter Squadron stationed at Shaw AFB, SC. This is the desert version of the squadron patch for the 78th Fighter Squadron stationed at Shaw AFB, SC.

Ho trovato questo sito con informazioni interessanti in merito ai Piloti eritreani! Iranian Airforce Training Eritrean Pilots

Regia Guardia di Finanza Allievo ufficiale in uniforme ordinaria

Ma ti capitano tutte a te? MY GEORGIA PEACH

??? Bell Model 30 1942 Experimental single-seat helicopter with open frame fuselage structure (later enclosed), pilot seat in nose, three-leg tailwheel u/c and 160hp Franklin engine mounted in centre section driving tail rotor and 2-blade wooden main rotor with transverse stabilising bar. Prot. NX41867 FF 29 Dec. 1942 subsequently rebuilt with monocoque fuselage. Second prot. NX41868 with two seats and enclosed cabin. Third prot. NX41860 with open cockpit and revised tailboom structure. www.aviastar.org

Isacco I-4 Helicogyr 1935 Vittorio Isacco was Italian designer who worked on a helicopter in USSR 1932-1936. In 1936 he was arrested and worked in a Special KB possibly at GAZ-39. I-4, also called Isacco-4 and Gyelikogyr, this unusual helicopter was only Isacco design actually to be completed. Fuselage of KhMA welded steel tube with fabric covering. Tail, pilot-operated vertical and horizontal surfaces of light alloy, fabric covering. Tailskid and wide-track fixed main wheel. Cabin amidships for pilot and five passengers. On nose, main propulsion engine. Four-blade lifting rotor, each blade having constant profile with light-alloy ribs (welded from 12x10mm elliptical tubing) located at intervals along light-alloy box spar with two main webs and upper/lower booms, fabric covering overall. Blades supported at rest by bracing ties from central cabane pyramid. Pilot controls to ailerons on pairs of arms behind outer trailing edge for cyclic/collective pitch control. Rotor driven by separate engines on tip of each blade. I-4 began late 32 and built at ZOK NII GVF. Prof. B.N.Yuriev acted as consultant. Designer’s calculations found unreliable, delaying completion until 1935. Ground tests in that year caused deformed dural trunnion on engine, remanufactured in steel, but went on to discover severe blade flutter resulting in departure of one of tip engines and severe straining of whole machine. Never flew, and final conclusion was that tip-mounted engine idea was not practical. Aviastar

This is the color version of the "Friday" patch for the 77th Fighter Squadron stationed at Shaw AFB, SC.

Pistol Packin Mama

Regia Guardia di Finanza Sottobrigadiere in uniforme ordinaria

Bensen B-8 Gyro-Boat 1956 The Gyro-Boat is a further variant of the Gyro-Glider, in which the basic free-turning rotor system, known as the Roto-sail, is mounted on any standard small dinghy. The result is literally a flying boat, intended to be towed above water by a motor boat. The two-blade steel and plywood rotor has a diameter of 6.10m and disc area of 29.2m2. Each blade has an area of 1.0m2. When fitted to a 3.66m aluminium dinghy weighing 45kg, the complete Gyro-boat has an empty weight of 68kg and a loaded weight of 147kg carrying one person or 227kg carrying two people. It takes off when towed at a forward speed of 37km/h, cruises at 55-110km/h and lands at 11km/h. The prototype Gyro-Boat flew for the first time on April 25, 1956, and the first production model on July 8, 1956. The 1959 version can be fitted with stabilizing pontoons on outriggers for rough water operation. (Aviastar)

Bellissimo Topic Lender, inoltre hai fatto luce su alcuni aspetti che non conoscevo a fondo, veramente ben fatto! Bel Lavoro!

Double Trouble

This is the "purple" version of the "Viper Sandy" Supersonic Saviours patch for the 510th Fighter Squadron that flies the Viper out of Aviano Air Base, Italy. They were forward deployed to a Turkish base in support of the operations. This patch too is VERY colorful. Awesome!

Regia Guardia di Finanza Maggiore in grande uniforme

Bensen B-12 "Sky-Way" 1961 Manned, somewhat precariously, research vehicle for possible agricultural operations. Aluminum framework with 10 McCulloch M75 two-cycle engines and 2.1m rotors; first flown 2 November 1961. Hovered at 6m, flew sideways and backwards with success. (Aviastar)

This is the desert version of the "Redeye" patch for the 120th Fighter Squadron, the Colorado Air National Guard unit that flies the F-16C+ out of Buckley AFB in Denver, CO. It is also used as their squadron designation as the 120th Expeditionary Fighter Squadron for when they are deployed.

Regia Guardia di Finanza Tenente in uniforme ordinaria

Non è tanto scadente! BUCK BENNY RIDES AGAIN Named for Jack Benny

Bensen "Midget" 1953 This miniature single-seater helicopter, designed as a private venture mainly for use in the United States Navy, has been simplified to such a degree that its components can be reassembled with hand tools. At each dp of the two-bladed rotor is a ram-jet engine, weighing a mere 2.5 kilos and running on either ordinary petrol or fuel oil. The "Midget" is reported to be able to lift four times its own weight. The initial tests were carried out in 1954. Technical data for "Midget" Number of seats: 1, engines: 2 x ram-jets equivalent to 40hp, rotor diameter: 4.57m, weight fully loaded: 227kg, empty weight: 45kg, cruising speed: 120km/h www.aviastar.org

112th Seabees

This is the desert version of the current squadron patch for the 510th Fighter Squadron that flies the Viper out of Aviano Air Base, Italy. The patch already has velcro attached.

Cadet Corps

Bensen B-8 Gyro-Glider 1956 The Gyro-Glider is a simple unpowered rotor-kite which can be towed behind even a small motor car. It is available as either a completed aircraft or kit of parts for amateur construction. Alternatively, would-be constructors can purchase a set of plans, with building and flying instructions. No pilot's licence is required to fly it in the United States and many hundreds of kits and plans have been sold. Application has been made for an Approved Type Certificate. The original Model B-7 Gyro-Glider was described in the 1958-59 edition of this work. It has been followed by the Model B-8, which is offered as either a single-seater or two-seater, the latter version being suitable for use as a pilot trainer. The Model B-8 consists basically of an inverted square-section tubular aluminium T-frame structure, of which the forward arm supports the lightweight seat, towing arm, rudder bar and landing gear nose-wheel. The rear arm supports a large stabilising fin and rudder, with the main landing gear wheels carried on a tubular axle near the junction of the T-frame. The free-turning two-bladed rotor is universally-mounted at the top of the T-frame and is operated directly by a hanging-stick control. It is claimed that the entire aircraft can be made from commercial tubing, wood and locally-available materials. (www.aviastar.org)

Manu, ma non si voleva sminuire affatto il tuo lavoro, anzi, sei uno dei più bravi modellisti che danno lustro al nostro forum con le proprie realizzazioni, era solo l'esposizione di un diverso punto di vista nulla di più!