aerei curiosi

[Ospite intruder]

La versione Simpson è simpatica, e si adatta molto bene anche a questo rappresentante del genio umano:

 

 

Colden Cyclops

[Blue Sky]

Marc Newson's concept jet

 

 

A Two-Seater Just Right for Getting Away from It All

[Ospite intruder]

 

SNCA 1310 Farfadet

[Blue Sky]

Hiller X-18 experimental VTOL transport

 

 

The Hiller X-18, begun in February 1957, used various components from existing aircraft. The fuselage was that of a Chase YC-122C transport.

The two wing-mounted 7,100 eshp Allison T40-A-14 turboshafts came from the XFY-1/XFV-1. It had three engines, the two turboprops drove

the 16 ft diameter counter-rotating three-bladed propellers and a 3,400 lb thrust Westinghouse J34 turbojet.

The 33,000 lb loaded X-18 underwent extensive ground tests beginning in December 1958, and made its first conventional flight

on 24 November 1959. It made partial conversions with wing angles of up to 33°.

On the 20th flight it had a propeller pitch control problem at 10,000 ft and went into a spin. It was recovered before impact, but was grounded.

It continued to test ground effects before it was damaged by a test stand failure.

[flankedd]

se ci fate caso il concept jet postato da blue a molti elementi in comuno con il boeing X-32..

[Blue Sky]

Sky Commuter Prototype

 

[Ospite intruder]

 

Volmer Jaybird

[Blue Sky]

Volmer Jaybird

???

 

SkyTote - the VTOL UAV that transitions into horizontal flight

 

 

April 8, 2006 One of the greatest difficulties with vertical take-off and landing (VTOL) aircraft is that they invariably don’t have high speed as one of their attributes. The principles are well explained in our article about the Cartercopter, and it’s one of the prime reasons the US military has persisted with the V-22 Osprey. There has been much emphasis on the development of new unmanned air vehicles (UAVs) in recent times, and development imperatives have often been torn between the various needs for UAVs that can quickly move from target to target yet loiter as a fixed and stable platform, all the while operating with no launch and retrieval infrastructure. One of the planet's most innovative companies, Aerovironment, has proposed an innovative configuration known as the Skytote to meet all of these needs. The SkyTote is a novel UAV using dual counter rotating propellers that will take off and land vertically like a helicopter http://en.wikipedia.org/wiki/Helicopter , but also transition into horizontal flight http://en.wikipedia.org/wiki/Flight like a conventional aircraft for efficient point-to-point operation. This complex vehicle uses an intricate drive system to allow helicopter operations with cyclic and collective control, as well as blade pitch control, combined with normal aircraft control surfaces in conventional flight operations

United States Air Force http://en.wikipedia.org/wiki/Air_force Research Laboratory scientists are working on the novel SkyTote whose primary mission is to deliver a payload to a specific point within a tactically relevant range and time. It is a Small Business Innovative Research Phase II effort orchestrated by AeroVironment for AFRL's Air Vehicles Directorate.

According to AFRL's Tom Cord, SkyTote program manager, the aircraft is a concept demonstrator and not a working system. "We are not trying to reach a certain performance and capability; we are trying to show that a hovering UAV with a fast, forward speed is a likelihood. It's something we can do in a simple way," he said.

Researchers are hopeful that after careful analysis and testing, SkyTote will become a safe, inexpensive and reliable choice for assessing bomb damage and conducting resupply missions or helping with emergency troop evacuations. The SkyTote combines the vertical takeoff, and landing and hover capabilities of helicopters with the high-speed cruise capability of a fixed-wing aircraft.

Counter-rotating rotors with individual cyclic control provide propulsion. Propulsion and transition from wing to propeller flight are some of the major technical challenges in this effort.

Because of the cyclic control, SkyTote looks like a helicopter when it is flying in helicopter mode. When it is flying like an airplane http://en.wikipedia.org/wiki/Airplane! , the helicopter propeller-rotor system functions more like a propeller.

"It's not a great rotor or propeller; it's a good compromise between a helicopter rotor system and an airplane propeller, and that's part of what we are trying to show is that this system will work well for this type of airplane,” Mr. Cord said. “When you look at the design parameters, you either go one way or the other. When you start to blend the two systems together, it becomes challenging. That is one of the big areas we have addressed during the past few years."

Researchers have been working on various versions of the SkyTote since 1998. It was smaller then with a design meant to deliver a 400-pound payload to a point within a 300-mile range in less than two hours. During the initial design phase, the vehicle was redesigned from the original 2-foot to an 8-foot vehicle to make it more realistic and usable for customers.

The new test vehicle was altered to carry a 50-pound payload within 150 nautical miles because researchers believed a medium-sized vehicle would be a more representative test of technology and would be directly useful to customers. Mr. Cord said these characteristics cannot be met by conventional helicopters and fixed-wing vehicles.

[Ospite intruder]

 

SIAI Marchetti Riviera

[Blue Sky]

Gyrodyne QH-50 DASH

 

The VTUAV program is the most recent chapter in the Navy’s surprisingly long history of UAV systems, and the culmination of over 10 years of VTOL UAV development. The Navy’s first operational VTOL UAV system was the remotely piloted helicopter QH-50 DASH, or Drone Anti-Submarine Helicopter (see Figure 1). First introduced into operational service in January 1963, the QH-50 was designed to give surface warships standoff Anti-Submarine Warfare (ASW) attack capabilities through the use of a drone torpedo delivery platform. The DASH was piloted via radar by an officer located in a destroyer’s Combat Information Center (CIC) to the suspected location of an enemy submarine, where it would drop its payload of one Mk-46 or two Mk-44 torpedoes. The drone would then be flown back to the ship, provided it survived the sudden change in the configuration of the helicopter after the payload was dropped; over 400 were lost in operational use. Nearly 800 of all four QH-50 variants were delivered to the Navy between 1960 and 1969. Most QH-50s were withdrawn from service in the 60s; however, several were used as unmanned reconnaissance drones in the Vietnam War, and continue to serve today at White Sands Missile Range, New Mexico, for the US Army Strike Command.

[Ospite intruder]

 

Chester Special (credo si tratti di modelli diversi)

[Ospite intruder]

 

Glenn Curtiss built this machine in 1916 to help his defense of the Wright Brothers' patent lawsuit. It was designed in 1883 by Frenchman Alexander Goupil, Curtiss' example flew with a 100 Hp. Curtiss OXX powerplant The seaplane version in the picture was heavy and could barely hop, fitted with wheels it flew successfully in 1917. It did not contribute to a successful defense.

Modificato 2 Gennaio 2009 da intruder

[Blue Sky]

Saunders-Roe S50

 

 

[Ospite intruder]

 

Tupolev Ant-2

[Blue Sky]

Fairchild VTOL research 1960

 

 

[Ospite intruder]

 

United Consultant UC-1 TwinBee

[Blue Sky]

Curtiss-Wright X-100 VTOL Experimental Aircraft

 

[Ospite intruder]

Vickers Vernom

[Blue Sky]

Vickers Vernom

 

Mi dici tenendo conto del periodo in cui è stato concepito cos'è che ha di particolarmente strano?

 

Bell ATV (Air Test Vehicle)

Bell VTOL Experimental Vehicle in 1954.

 

[Ospite intruder]

 

"This plane was a one-off race plane built in 1920 to compete in the Gordon Bennett Aviation cup race of 1921. It was one of the first planes to have a retractable landing gear in combination with enclosed cockpit. Other highly advanced features for the time were an unbraced wing which had flaps on the trailing and leading edges. It was powered by a 250 hp Hall Scott Liberty six, maximum speed was 200 mph (322 kmh). Also known as Dayton-Wright Racer"

[Blue Sky]

Nord 500 S/VTOL Experimental Aircraft

 

[Ospite intruder]

Bell ATV (Air Test Vehicle)

Bell VTOL Experimental Vehicle in 1954.

 

 

Già postato, #319, pagina 22.

 

 

Questo spero sia intonso, ho girato tutto il topic ma non l'ho trovato, spero la stanchezza non mi abbia giocato qualche brutto (come quello della foto) scherzo.

 

 

 

de Bothezat Helicopter

 

In January 1921, the US Army Air Corps awarded a contract to Dr. George de Bothezat and Ivan Jerome to develop a vertical flight machine. The 1678kg "X"-shaped structure supported a 8.1m diameter six-blade rotor at each end of the 9m arms. At the ends of the lateral arms, two small propellers with variable pitch were used for thrusting and yaw control. A small lifting rotor was also mounted above the 180hp Le Rhone radial engine (which it also cooled) at the junction of the frames, but was later removed as unnecessary. Each rotor had individual collective pitch control to produce differential thrust through vehicle inclination for translation. The aircraft weighed 1700kg at take-off and made its first flight in October 1922. The engine was soon upgraded to a 220hp Bentley BR-2 rotary. About 100 flights were made by the end of 1923 at what would eventually be known as Wright Field near Dayton, Ohio, including one with three "passengers" hanging onto the airframe. Although the contract called for a 100m hover, the highest it ever reached was about 5m. After expending $200,000, de Bothezat demonstrated that his vehicle could be quite stable and that the practical helicopter was theoretically possible. It was, however, underpowered, unresponsive, mechanically complex and susceptible to reliability problems. Pilot workload was too high during hover to attempt lateral motion.

 

In the late 1930s, de Bothezat built a single seat, coaxial helicopter with even less success.

 

 

 

 

 

The first rotorcraft ordered by the United States Army was made by de Bothezat. This Russian engineer who had emigrated to the United States started in July 1921 to build a helicopter at Dayton under the auspices of the United States Air Service.

 

The helicopter had four six-bladed rotors mounted at the ends of beams 20 metres in length, forming a cross and intersecting in all directions. The rotor axes were not parallel but slightly inclined inwards so that if prolonged they would have met at a point directly above the centre of gravity. Besides the rotors with variable-pitch blades, the helicopter had two horizontal propellers called 'steering airscrews' as well as two small airscrews placed above the gearbox and acting as regulators for the 220hp engine. Ready for flight, the helicopter weighed 1610kg.

 

On 18th December 1922 during a test by the Technical Section at McCook Field (now known as Wright Field), the aircraft rose 1.8 metres from the ground and remained airborne for 1 minute 42 seconds. On 19th January 1923 it lifted two persons to a height of 1.2 metres, and on 17th April 1923 it lifted not only the pilot but also four people hanging on to the framework. Because of its great moment of inertia, the helicopter proved quite stable, yet despite the series of sustained flights which it performed, the Air Corps rapidly lost interest in it.

 

P.Lambermont "Helicopters and Autogyros of the World", 1958

 

 

 

 

[Blue Sky]

Curtiss-Wright X-19 VTOL Experimental Aircraft

 

 

Length : 12.83m

Wing Span (Front) : 5.94m

Wing Span (Rear) : 6.55m

Hight : 5.21m

Wing Area (Front) : 5.21 Square meter

Wing Area (Rear) : 9.15 Square meter

All-Up Weight : 6,196Kg

Empty Weight : 4,568Kg

Engine : Lycoming T55-L-5 Turbo Shaft (1,850shp) X 2

Max Speed : 730Km/h

Service Ceiling : 7,800m

Range : 523Km

Crew : 2 + 6

[Johnny_Kulera]

Un aereo che funziona ad ala battente!

 

 

 

Qui un link

[Blue Sky]

Un aereo che funziona ad ala battente!

 

Grande Johnny, direi che meriti il primo premio per l'oggetto volante più strano del mondo!

 

Ho trovato dei video del coso in azione!

 

 

Ornithopter Flight

 

Ornithopter - cool but pointless

Modificato 2 Gennaio 2009 da Blue Sky