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Description
| Manufacturer: | Republic | |
| Base model: | F-84 | |
| Designation: | XF-84 | |
| Version: | H | |
| Designation System: | U.S. Air Force | |
| Designation Period: | 1948-Present | |
| Basic role: | Fighter | |
| Status: | Experimental | |
| See Also: | ||
Specifications
| Not Yet Available |
Known serial numbers
Recent comments by our visitors
| Jack L Gilbert Rio Rancho, NM | It would be interesting to see how this concept would work if the original propellor was replaced with a modern, NASA-designed multi-blade unit with scimitar-shaped blades to reduce the shock wave production. 02/07/2009 @ 07:18 [ref: 23658] |
| Hal Stiles Miami, FL | An F-86 SaberJet with a J-65 engine that produces 7,200 Lbs. of thrust at 500 knots is making 11,000 horsepower.
The XF-84 went 500 MPH of half of that horsepower. The XF-84 was a great success and development should have continued with a more powerful engine and counter rotating propellers. But back in those days, the thermodynamic gurus insisted that high temperature was the key to gas turbine performance. They have since been shown the light, and now acknowledge that high compression ratio is the key to performance. This concept should be tried again. 11/28/2007 @ 11:06 [ref: 18701] |
| Michael Bakersfield, CA | Dispite the ferocious demeanor and reputation of the FS 059, aircraft admirers must admit that the daunting performance makes this the most radical prototype ever concieved second only to the doomsday missle conceieved about the same era, a nuclear powered multiple dispensing atomic warheaded missle, that would fly for months with a dirty plume.
This prototype was displayed in Bakersfield California for several decades until replaced with a tired T38...... 11/07/2007 @ 11:00 [ref: 18434] |
| Sem_Dronjak Bjelovar, Croatia, OTH | Why not take a hull of, say P-80, instead of J-33 turbojet install a tandem of 2 ubiquitus Packard-Merlin V-1650s piston engines, relocate some equipment into nose to compensate for changes in center of gravity... and what else... both engines are on the single double shaft, first is on the inner, second on the outer, both driving a two component counter-rotating prop (there goes the torque problem). The Shooting Star had a big, robust airframe, and i think that this was possible. Of course I doubt that speeds would exceed some 850-900 kph at best, but it is technologically less risky and a more-less simple solution (compared to the XF-84H and notorious XT-40)... furthermore it was feasible as far back as 1944-45; that is, if someone had thought of that one. 05/16/2006 @ 14:19 [ref: 13297] |
| mmm , NE | Today the swedish anti-piracy organisations raided The Pirate Bay and confiscated the computers running the tracker. This probably means the end of The Pirate Bay and we, the crew, apologize for all loss of income caused by our activity over the years. 06/01/2005 @ 12:29 [ref: 10365] |
| Patrick Fleming Patuxent River, MD | http://prototypes.free.fr/a2d1/a2d1.php3 This web page, while it is mainly about the Douglas A2D Skyshark also has information on the other aircraft that used the Allison T-40 turboprop engine, including a section on the XF-84H. It has a picture of the engine on a rotating stand, rotated so that one power turbine is above the other, though in the A2D the engine was installed with them side by side. The automatic translation from the French isn't too good, but it's an interesting site anyhow. 06/02/2003 @ 18:55 [ref: 6486] |
| Brian Lockett , CA | The design of the XF-84H was entirely unusable because of the noise made by the propellor. The propeller blades were supersonic even while the airplane was running up on the ground. Each blade shed a shock wave that spiralled outward. It wasn't just the volume of the noise. It didn't even qualify as sound. Sound is a series of smooth waves of variable frequency and amplitude. Shock waves have a completely different profile than sound waves and they travel faster than sound waves. They are typified by a nearly instantaneous pressure increase. On an oscilloscope the pressure spikes from the shock waves of the XF-84H propellor would appear more like sawteeth than a nice, friendly sine wave.
A person standing some distance from the airplane was subjected to rapid fire shock waves. The shock waves acted directly on the large intestine, causing spasms that made the individual soil his pants. The wearing of hearing protection made no difference. In short order, the Air Force Flight Test Center directed Republic to tow the XF-84H out on Rogers Dry Lake, far from the flightline, before running up its engine. 09/16/2000 @ 12:32 [ref: 757] |
| John Graff Leawood, KS | Republic XF-84H
Experimental Allison-Engine(Turbo Prop)configuration with propeller blades designed for supersonic speeds. This aircraft was reconfigured with a true "T-Tail" to mitigate turbulent flow over the horizontal stabilizer/elevator surfaces from propeller wash. 04/01/2000 @ 08:05 [ref: 36] |
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