supersonic - What are the advantages and disadvantages of a …
The main wing of the XB-70 is a delta wing to keep the take-off and landing speeds relatively low and offers the best compromise of low and high speed characteristics. Also, the wing tips could be deflected downwards to improve directional stability at supersonic speed and to improve L/D by using the waverider effect.
What are the different wing planforms? What are each's …
Aug 30, 2015 · A very good example for this wing is the Dassault Mirage 2000, which is an example of tailless delta i.e. without horizontal stabilizers. Source: www.aircraftrecognition.co.uk. A variant of the delta wing used in some aircraft is the one with horizontal stabilizer (tailed delta), the most famous of them being the Russian Mikoyan-Gurevich MiG-21.
Why has the rest of the world gone after delta wings while not the …
Jan 7, 2017 · Delta wings have a few disadvantages- the wing shape increases drag (especially at low speeds) and reduces maneuverability- this requires addition of canards to overcome. The delta shape is optimized for high speed something which made sense when speed was the main requirement (USAF last operated delta aircraft in a dedicated interceptor role ...
Why are delta wings not commonly used in commercial airliners?
May 21, 2014 · IIRC modern delta-wing fighters (I think especially the fly-by-wire ones) like the Mirage 2000 and newer models have slats and flaperons. My knowledge is very limited, but remember reading somewhere that a lifting canard helps reduce the landing and takeoff speeds of delta-wing designs. $\endgroup$ –
What are the benefits of a 'cranked arrow' delta wing?
Oct 5, 2016 · High root thickness, so the wing can be made stiffer and stronger where the loads are highest. Better pitch stability in the post-stall region, so no AoA limit needs to be observed. The X-31 could maneuver with thrust vectoring only because its cranked arrow delta wing was more or less neutral in pitch over the full AoA range. A simple delta ...
Why increase chord length for supersonic aircraft (swept vs delta …
Jul 30, 2022 · Why delta instead of swept? Image above from Torenbeek, first used in this answer, shows four bombers with planform shapes ranging from pure sweep to pure delta. Consider a strongly swept wing @ 55°: there is a triangular gap between the aft wing edge and the fuselage. Fill this space up with wing structure to obtain a delta wing, and:
Straight Wings VS Delta Wings, Variable wing with Forward swept ...
A delta wing is going to have a small aspect ratio (short and stubby) as well as sweep. Straight wings can have a small aspect ratio (think F-104) or large aspect ratio (more like a U-2). Delta wings have high induced drag (not good for slow flight) but have favorable characteristics at high speed (like low wave drag).
aerodynamics - What is vortex lift? - Aviation Stack Exchange
Sep 19, 2015 · 28. The vortex lift is the method by which highly swept wings (like delta wings) produce lift at high angles of attack. In the case of wings having sharp, highly swept leading edges like delta wings, the leading-edge separation vortex phenomenon occurs at subsonic speeds. However, the separation does not destroy the lift as in the case of low ...
aerodynamics - Why is the delta wing naturally stable in pitch ...
1. This is a very good question, as it shows some of the misunderstandings regarding "tailless" aircraft. With deltas, one can consider them as blended wing/tails. The function of a horizontal tail surface is pitch control. The back of a delta is certainly large enough to do this. So much so, that now one can design a forward canard to go with it.
What are the disadvantages of a delta wing biplane design?
Nov 1, 2016 · A second delta wing will add more area, increasing both wave drag (from the cross section) and viscous drag (from the surface). Configuration of the aircraft also becomes problematic. Most aircraft with delta wings tend to be fairly flat, allowing lower area and therefore lower drag. The closer the wings are, the more they will interfere.