I believe that one of best looking aircraft ever designed was the classic 20/30 series Learjet. I wonder why? Able to kill active threads stone dead with a single post! A t-tailed piston twin, say, the Duchess or Seminole, looks like ass. Reduces stick lightening: The greater height of T-tail can help reduce stick lightning caused by the conventional tail after entering the wake while maneuvering. Blocking of the wind: Aircraft with T-tail design can lose elevator authority because the wings block the wind. V-tail replaces the traditional fin and horizontal surfaces with two surfaces which forms a V-shape configuration. I think to have the engines underneath the wing and a conventional tail is the better concept (hence why most of the new airliners are like that). T-tail will give you better rudder authority at very high AOA and stalls so as to prevent a spin. 2. This ensures smooth flow and better pitch control of the aircraft. Notify me of follow-up comments by email. It's my opinion, so have a nice day :). For the hairstyle, see, Learn how and when to remove this template message, https://en.wikipedia.org/w/index.php?title=Twin_tail&oldid=963988996, Articles needing additional references from February 2009, All articles needing additional references, Creative Commons Attribution-ShareAlike License, This page was last edited on 22 June 2020, at 23:19. Twin-tail-boom aircraft designs of 1939-45 – Facts and Fantasy – by X.Toff. They scare the ground away. by Ironmachine » 25 Aug 2014, 14:20, Post The way I simply see it in my limited experience, if you're coming in a bit steep and at risk of striking the nosewheel first, putting the prop in danger among other things (as in Piper T-hawk), adding just a tad of power won't let you flare out easier. Rudder authority: T-tail design gives you a better rudder authority when flying at a very high AOA and stalls thus preventing a spin. 9. Thanks for the photo of the model. The only other way to get there is either a Bixler style setup with a large thrust angle, or a skywalker style setup with a low tail boom, but both limit your prop size and the … Very occasionally, three or more tails are used, as on the Breguet Deux-Ponts, Lockheed Constellation and Boeing 314 Clipper. A twin tail can also simplify hangar requirements, give dorsal gunners enhanced firing area, and in some cases reduce the aircraft's weight. In a normal tailed engine aircraft, when the pilot increases power, he gets wind over the tail and has control authority of the aircraft. 5. 6. These advantages can all be design considerations when developing new planes. B-52s don't take off. Thanks. Accident, incident and crash related photos, Air to Air Both military and civil versions, Blimps / Airships A stalled wing at high angles of attack may lead to blanking of the airflow over tailplane and the elevators may lead to loss of pitch control. T-tails are the ones to get caught in the wake of the wing at high AoAs, as described by FSF and others, leading to the deep stall problems and necessitating stick pushers. That being the case, why wasn't the twin rudder concept more widely used? Or three. Significant aircraft with twin tails include the Consolidated B-24 Liberator, Handley-Page Halifax, Avro Lancaster, and P-38 Lightning. Inadequate maintenance of t-tail may lead to loss of control of the aircraft on air. Aircraft painted in beautiful and original liveries, Airport Overviews I'd like to learn as much in this area as possible. On multi-engine propeller designs twin fin and rudders operating in the propeller slipstream give greater rudder authority and improved control at low airspeeds, and when taxiing. The T-tail design is popular with gliders and essential where high performance is required. Aircraft flying government officials, Helicopters Are there certain advantages or disadvantages that come with a T-tail design compared to a more standard vertical fin? There were other minor differences, but the tail is the main difference in shape. - I would guess that a T-tail necessitates a stronger, and thus heavier fin. by phylo_roadking » 28 Aug 2014, 23:17, Post Tailplane forces: The vertical stabilizer should be made stronger and stiffer in order to support all the forces generated by the tailplane. It also affords a degree of redundancy—if one tail is damaged, the other may remain functional. by jaguh » 29 Aug 2014, 13:26, Post A excellent example of an aircraft was the Cant.Z1007. Airliners.net is the leading community for discovering and sharing high-quality aviation photography. Pictures of great freighter aircraft, Government Aircraft Both military and civil versions, Blimps / Airships In high performance twin-tail aircraft, tail buffet occurs when unsteady pressures associated with separated flow excite the modes of the vertical fin structural assemblies. 4. The twin tail design was especially popular during the Second World War and continues to be used in the production of a number of aircraft today, including both small and large planes. - John Ringo. but there are also wing-engined jets that have T-tails, like the C-5 Galaxy and the Avro. Without the propwash the tail has to rely solely on airspeed for air movement over it, which is one of the reasons you don't see a lot of aerobatic aircraft such as Pitts, Extra's and Sukhoi's running around with T-tails. Create space for the engine: Have the tail surface mounted away from rear fuselage creates space for mounting engines. The arrangement is not limited to World War II-vintage aircraft, however. The glass isn't half empty, or half full, it's twice as big as it needs to be. This arrangement is different from the normal design where the tailplane is mounted on the fuselage at the base of the fin. Very interesting, Starlionblue. They have been around since the 1950's i think. A T-Tail design is an aircraft configuration in which the tail control surfaces with the horizontal surface are mounted on top of the aircraft fin forming a T look when viewed from the front. Engineers working on designs for new aircraft can consider the applications the plane is being designed for and select the best body shape and tail assembly for the situation. The T-tail design is popular with gliders and essential where high performance is required. Provides smooth flow: A T-tail ensures the tailplane surfaces behind the wings are out of the airflow. Twin tails used as endplates on the tailplane also increase the tailplane's efficiency so it can be … Again this could be a matter of the aerodynamics of the particular design, rather than a general rule. Mary has a liberal arts degree from Goddard College and I remember my father telling me something to that effect, and he was an aeronautical engineer. Twenty years ago we had Johnny Cash, Bob Hope and Steve Jobs. I'm sure somebody can shoot me down on this if I'm wrong. For military planes, this is important, as enemy aircraft, as well as anti-aircraft guns may aim for the tail with the goal of destabilizing the plane so the pilot can no longer control it, forcing it to the ground. We thank you for your support and hope you'll join the largest aviation community on the web. Hosted by Vikki. I have heard a conventional tail has better stall recovery characteristics than a T-tail. An interesting topic so let me add this to the mix: The Lancaster prototype had 3 tails, rather like the Boeing Clippers: Twin fins give an upper fuselage gun or turret a better field of fire to the rear of the aircraft. ", Tower, Affirmitive, gear is down and welded. Airport overviews from the air or ground, Tails and Winglets 1. by Maxschnauzer » 29 Aug 2014, 13:49, Post Twin boom allows you to do both: mount a pusher prop with a conventional tail. One advantage to the twin tail is the ability to control the plane even if one tail becomes compromised. Many high-wing airplanes have a T-tail, and in addition to some of the reasons stated above, I believe it is to keep the stabilizer out of the wake turbulence caused by the wing. Airport overviews from the air or ground, Tails and Winglets The aircraft that come readily to mind are the Avro Lancaster, Consolidated B-24 and the Handley Page Halifax. Also, it seems that having the rudders directly in the airflow of the engines gives better control response at low airspeeds and when taxiing. In a normal tailed engine aircraft, when the pilot increases power, he gets wind over the tail and has control authority of the aircraft. This design is easy to identify at a glance, as the configuration tends to stand out. High performance: It results in high performance of aerodynamics and also ensure there is an excellent glide ratio since the empennage is not affected by the wing slip steam. Planes operating at low speeds need clean airflow for control. Not only for the aerodynamic loads, but for the elevator and elevator trim mechanisms. A very unusual design can be seen on the E-2 Hawkeye, which has two additional vertical tails fixed to the horizontal stabilizer between the normal vertical twin-tail surfaces. Aircraft Trim Requirements Trim is one of the inevitable requirements of a safe flight. Also, twin vertical stabilizers on a single engine aircraft like the Stuka would theoretically negate the advantage of placing them in the prop's slipstream. The bigger rudder surface provides a higher degree of control and stability (and a twin tail also simplifies hangar requirements). One advantage to the twin tail is the ability to control the plane even if one tail becomes compromised. This wake interference is dependent on flap position and a number of other design factors; however, two primary effects can be surmised. Don't forget the starfighter! Maintenance issues: It will be difficult to climb up there and work on the T-tail if it has some problems. Moderators: richierich, ua900, PanAm_DC10, hOMSaR, Military Aircraft Tail and Winglet closeups with beautiful airline logos. Depending on the design, one of three advantages made designers choose a twin-boom layout: No structure directly aft of the fuselage, which helped to integrate the propulsion, or improved access to the cargo area, or improved pilot vision, Smaller overall surface area for two-engine aircraft, or Name as many disadvantages and advantages of each that come to mind. You have a perception problem. Wikibuy Review: A Free Tool That Saves You Time and Money, 15 Creative Ways to Save Money That Actually Work. Having two will usually increase rudder surface area over that of a single tail, providing a higher degree of control. Or, in the case of a Seminole, you get a really big left arm from yanking back on the yoke during stalls and slow flight and a really small right arm from spinning the stab trim wheel so much. by jaguh » 29 Aug 2014, 16:45, Return to “Life in the Third Reich & Weimar Republic”. Examples of this construction are the twin-engined Lockheed P-38 Lightning; Northrop P-61 Black Widow; Focke-Wulf Fw 189; the single jet-engined de Havilland Vampire; cargo-carrying Fairchild C-119 Flying Boxcar and the little known Transavia PL-12 Airtruk. 7. Rear mounted engines would also be much closer to the centerline of the aircraft, reducing the controllability issues in an engine out scenario. Our large helicopter section. Thanks guys, you keep teaching me more and more every day. Twin tails can also be angled, as seen on jets like the F-18, F-22 and F-35, to further reduce radar cross section, and scatter radar waves.
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