Cross-sectional area distribution along the complete airframe determines wave drag, largely independent of the actual shape. The blue and light green shapes are roughly equal in area.
The Whitcomb area rule, named after NACA engineer Richard Whitcomb and also called the transonic area rule, is a design procedure used to reduce an aircraft's drag at transonic speeds which occur between about Mach 0.75 and 1.2. For supersonic speeds a different procedure called the supersonic area rule, developed by NACA aerodynamicist Robert Jones, is used.
Transonic is one of the most important speed ranges for commercial and military fixed-wing aircraft today, with transonic acceleration an important performance requirement for combat aircraft and which is improved by reductions in transonic drag.
The Whitcomb arearule, named after NACA engineer Richard Whitcomb and also called the transonic arearule, is a design procedure used to reduce an aircraft's...
here than elsewhere in this article; play and area, respectively, are used instead. A clarification to rule 5 is added in parentheses. The board is empty...
In United States aviation, a special flight rulesarea (SFRA) is a region in which the normal regulations of flight do not apply in whole or in part, especially...
conservation of these efforts was the Forest Service 2001 Roadless Area Conservation Rule (Roadless Rule). Access roads provide important access to emergency services...
for the North American P-51 Mustang. NACA also helped in developing the arearule that is used on all modern supersonic aircraft, and conducted the key...
In philosophy of logic and logic, a rule of inference, inference rule or transformation rule is a logical form consisting of a function which takes premises...
other rule types not illustrated here. A minimum arearule is just what the name implies. Antenna rules are complex rules that check ratios of areas of every...
in cross area farther down the vehicle leads to shock waves along the body. Designers use the Supersonic arearule and the Whitcomb arearule to minimize...
or 'empire') was the rule of the British Crown on the Indian subcontinent; it is also called Crown rule in India, or Direct rule in India, and lasted...
A slide rule is a hand-operated mechanical calculator consisting of slidable rulers for evaluating mathematical operations such as multiplication, division...
trapezoidal rule, and Simpson's rule are examples of a family of quadrature rules called the Newton–Cotes formulas. The degree n Newton–Cotes quadrature rule approximates...
(Rule 9.4). A one-stroke penalty is assessed if a player elects to take relief when their ball comes to rest within a red or yellow penalty area (Rule...
The rules of chess (also known as the laws of chess) govern the play of the game of chess. Chess is a two-player abstract strategy board game. Each player...
The rule of law is a political ideal that all citizens and institutions within a country, state, or community are accountable to the same laws, including...
Rule of nines or rule of nine may refer to: Rule of nine (linguistics), an orthographic rule of the Ukrainian language. Rule of nines (mathematics), a...
integration, i.e., approximating the area of functions or lines on a graph, where it is also known as the rectangle rule. It can also be applied for approximating...
Fuselage shaping was similarly changed with the introduction of the Whitcomb arearule. Whitcomb had been working on testing various airframe shapes for transonic...
The rules of basketball are the rules and regulations that govern the play, officiating, equipment and procedures of basketball. While many of the basic...
the design principle 'arearule' and variously identified as a coke bottle, wasp waist, or Marilyn Monroe shape. The arearule design technique is most...
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