science

McDonnell Douglas X-36

McDonnell Douglas X-36 is a science topic covered in the lgStudy science library. This page brings together a partial reference excerpt, illustrations, worked examples, real-world applications and a short study plan, so you can understand McDonnell Douglas X-36 rather than just read about it. In short: The McDonnell Douglas (later Boeing) X-36 Tailless Fighter Agility Research Aircraft is an American stealthy subscale prototype jet UAV. Built for NASA and first flown in 1997, it was designed without the traditional empennage found on most aircraft.

Key takeaways

McDonnell Douglas X-36 belongs to science; place it in that map before memorising details.
Learn the definition first, then one example that makes the definition concrete.
Connect McDonnell Douglas X-36 to a quantity you can measure, compute or draw — that is where exam questions come from.
Reproduce the core statement of McDonnell Douglas X-36 from memory before moving on to harder problems.

Reference excerpt

The McDonnell Douglas (later Boeing) X-36 Tailless Fighter Agility Research Aircraft is an American stealthy subscale prototype jet UAV. Built for NASA and first flown in 1997, it was designed without the traditional empennage found on most aircraft. This configuration was designed to reduce weight, drag, and radar cross section; and increase range, maneuverability, and survivability.

Design and development

The X-36 was built to 28% scale of a possible fighter aircraft and was controlled by a pilot in a ground-based virtual cockpit with a view provided by a video camera mounted in the canopy of the aircraft. For control, a canard forward of the wing was used as well as split ailerons and an advanced thrust vectoring nozzle for directional control. The X-36 was unstable in both pitch and yaw axes, so an advanced digital fly-by-wire control system was used to provide stability. First flown on 17 May 1997, it made 31 successful research flights. It handled very well, and the program is reported to have met or exceeded all project goals. McDonnell Douglas merged with Boeing in August 1997 while the test program was in progress; the aircraft is sometimes referred to as the Boeing X-36. The X-36 possessed high maneuverability that would be ideal for use as a fighter. Despite its potential suitability, and highly successful test program, there have been no reports regarding further development of the X-36 or any derived design as of 2026.

Preservation The first X-36 is at the National Museum of the United States Air Force at Wright-Patterson Air Force Base near Dayton, Ohio. It arrived on July 16, 2003, the same day as the Boeing Bird of Prey and is displayed in the Museum's Research & Development Gallery. The second X-36 is displayed outside the Air Force Test Flight Center Museum at Edwards Air Force Base in California.

Specifications (X-36)

Data from Jane's All the World's Aircraft 1997-98, Designation Systems, American X-VehiclesGeneral characteristics Length: 18 ft 2.5 in (5.550 m) including pitot boom Wingspan: 10 ft 5 in (3.18 m) Height: 3 ft 1.25 in (0.9462 m) Empty weight: 1,090 lb (494 kg) Max takeoff weight: 1,270 lb (576 kg) Fuel capacity: 180 lb (82 kg) Powerplant: 1 × Williams F112 turbofan engine, 700 lbf (3.1 kN) thrust Performance

Maximum speed: 160 kn (180 mph, 300 km/h) initial flight test limit 243 kn (280 mph; 450 km/h) later limit Approach speed: 110 kn (127 mph; 204 km/h) Service ceiling: 20,500 ft (6,200 m) g limits: +5 Thrust/weight: 0.56

Gallery

See also Tailless aircraft Related development

Boeing X-45 Aircraft of comparable role, configuration, and era

Boeing Bird of Prey

Related lists

List of experimental aircraft

References

External links

NASA fact sheet on the X-36 Tailless Fighter Agility Research Aircraft Archived 2019-01-19 at the Wayback Machine "X-36 Proving Its Agility In Flight Testing". Boeing, 1997. Boeing X-36 (1997): Tailless Agility Aviation Week & Space Technology

Illustrations

Worked examples

Example 1 — a first encounter with McDonnell Douglas X-36

Start with the simplest possible case. Write down what McDonnell Douglas X-36 claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In science, the smallest case is usually a single object, a single equation or a single measurement. Check that every symbol or term in your sentence has a meaning in that case.

Example 2 — changing one variable

Take the situation from Example 1 and change exactly one quantity: double it, halve it, or set it to zero. Predict what should happen to McDonnell Douglas X-36 before you calculate. Comparing your prediction with the result is the fastest way to find out whether you understand the idea or only the words.

Example 3 — an exam-style question

Typical questions about McDonnell Douglas X-36 ask you to (a) state it precisely, (b) apply it to given data, and (c) explain a limitation. Practise writing all three answers in under five minutes; the third part is what separates a full-mark answer from an average one.

Applications of McDonnell Douglas X-36

In research: McDonnell Douglas X-36 appears in science research whenever the underlying quantities have to be modelled precisely. Papers usually cite it as a starting assumption and then explore where it breaks down.
In technology and industry: Engineering practice reuses McDonnell Douglas X-36 in design rules, simulations and safety margins. Knowing the idea lets you read a specification sheet and understand why the numbers look the way they do.
In the classroom: McDonnell Douglas X-36 is common in secondary-school and first-year university syllabi. It links to neighbouring topics 1990s United States experimental aircraft, Aircraft first flown in 1997, Aircraft with retractable tricycle landing gear, so understanding it makes those chapters shorter.
In everyday life: Look for McDonnell Douglas X-36 outside the textbook — in sport, cooking, traffic, electronics or the sky above you. An example you found yourself is remembered far longer than one you were given.

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How to study McDonnell Douglas X-36 in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what McDonnell Douglas X-36 means in your own words.
Compare your version with the excerpt and mark what you missed.
Work through the three examples above with pen and paper.
Explain McDonnell Douglas X-36 out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is McDonnell Douglas X-36 in simple terms?

Why does McDonnell Douglas X-36 matter?

Because it connects several science ideas at once: it gives you a definition you can apply, a quantity you can calculate, and a way to check whether a result is plausible.

How should I study McDonnell Douglas X-36?

Read the excerpt, restate it from memory, then work through the examples and applications listed on this page. The five-step study plan above takes about twenty minutes.

What does this page cover?

It gives you a compact reference excerpt plus original lgStudy explanations, examples, applications and study material on McDonnell Douglas X-36.