science

WLT Sparrow

WLT Sparrow 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 WLT Sparrow rather than just read about it. In short: The Wolfsberg Aircraft Sparrow ML is a twin boom, pusher configuration ultralight aircraft seating two in tandem. Designed and built in the Czech Republic, originally by Wolfsberg Letecká Továrna (WLT) which was renamed Wolfberg Aircraft in 2017.

Key takeaways

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

Reference excerpt

The Wolfsberg Aircraft Sparrow ML is a twin boom, pusher configuration ultralight aircraft seating two in tandem. Designed and built in the Czech Republic, originally by Wolfsberg Letecká Továrna (WLT) which was renamed Wolfberg Aircraft in 2017.

Design and development The Sparrow is largely built from carbon fibre. Its wing has a short span rectangular section between the tail-booms and straight-tapered outer panels with angled tips. There are short ailerons with flaps between them and the twin slender booms. Each boom carries an angled, straight edged fin and rudder; the tailplane, with a one-piece elevator fitted with an offset trim tab, is mounted on top of the fins. The Sparrow's fuselage has a smooth profile partly defined by multipanel glazing that extends almost from the nose back beyond the wing leading edge. Access to both of the tandem seats is via a wide port-side door. The aircraft is normally flown from the front; the rear seat, placed over the leading edge, can also be provided with controls and instrumentation for an instructor (the Trainer version) or, as on the Clubman, be a passenger position. A ballistic recovery parachute is an option. The Sparrow has a fixed tricycle undercarriage; all three wheels have speed fairings and the main wheels have faired legs under the wings, raked back from the forward ends of the booms. The Sparrow first flew on 24 August 2010 and production started in 2012. It achieved Czech certification on 1 March 2013 and by the summer of that year six had been built. French certification was obtained in January 2014 and it appeared on public display for the first time at the AERO Friedrichshafen show in 2014. The display example is a later version powered by a 75 kW (100 hp) Rotax 912 ULS flat-four, air- and liquid-cooled engine.

Variants Sparrow ML Clubman Controls and instruments for front seat only. Sparrow ML Trainer Dual controls and instruments. 12 kg (26 lb) heavier than the Clubman.

Specifications (Rotax 912 UL engine) Data from Wolfsberg Aircraft General characteristics Crew: one pilot Capacity: one passenger Length: 7.00 m (23 ft 0 in) Wingspan: 9.1 m (29 ft 10 in) Height: 1.76 m (5 ft 9 in) Wing area: 11.6 m2 (125 sq ft) Empty weight: 272 kg (600 lb) Max takeoff weight: 472.5 kg (1,042 lb) Fuel capacity: 60 litres (13 imp gal; 16 US gal) Powerplant: 1 × Rotax 912 UL air and water-cooled horizontally opposed 4-cylinder in pusher configuration, 60 kW (80 hp) Propellers: 3-bladed Woodcomp Klassic 170/3, 1.70 m (5 ft 7 in) diameter composite, with ground adjustable pitch Performance

Cruise speed: 210 km/h (130 mph, 110 kn) Stall speed: 57 km/h (35 mph, 31 kn) flaps down Never exceed speed: 234 km/h (145 mph, 126 kn) Minimum control speed: 60 km/h (37 mph, 32 kn) Take-off distance to clear 15 m (50 ft): 210 m (689 ft) Landing distance from 15 m (50 ft): 210 m (689 ft)

References

Worked examples

Example 1 — a first encounter with WLT Sparrow

Start with the simplest possible case. Write down what WLT Sparrow 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 WLT Sparrow 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 WLT Sparrow 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 WLT Sparrow

In research: WLT Sparrow 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 WLT Sparrow 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: WLT Sparrow is common in secondary-school and first-year university syllabi. It links to neighbouring topics 2010s Czech ultralight aircraft, Aircraft first flown in 2010, Low-wing aircraft, so understanding it makes those chapters shorter.
In everyday life: Look for WLT Sparrow 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 WLT Sparrow in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what WLT Sparrow 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 WLT Sparrow out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is WLT Sparrow in simple terms?

Why does WLT Sparrow 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 WLT Sparrow?

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 WLT Sparrow.