science

Halton Jupiter

Halton Jupiter 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 Halton Jupiter rather than just read about it. In short: The Halton Jupiter was a human-powered aircraft which established distance and duration records in the early 1970s. Background The aircraft was originally designed in 1963 by Chris Roper of Woodford, Essex.

Key takeaways

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

Reference excerpt

The Halton Jupiter was a human-powered aircraft which established distance and duration records in the early 1970s.

Background The aircraft was originally designed in 1963 by Chris Roper of Woodford, Essex. Construction by Roper, and others, continued through to 1968, when ill-health halted work. In 1969, a workshop fire partially destroyed the craft. In 1970, the remains were handed over to Flight Lieutenant John Potter, based at RAF Halton, Buckinghamshire.

Development and description The aircraft was rebuilt at Halton, by an informal group of RAF staff and apprentices, led by Potter. Some 100 individuals were involved with the construction, contributing 4,000 hours towards it. The aircraft was substantially similar to that originally constructed by Roper et al, but with a number of detail changes. The Jupiter was a single-place shoulder-wing monoplane, with a pylon-mounted pusher propeller. The wing's primary structure was a spruce and balsa spar, with the secondary structure being made up of balsa ribs spaced 3 in (7.6 cm) apart. The wing had a constant chord centre section, with no dihedral, with the wing's outer panels having both taper and dihedral. Differential ailerons were incorporated into the outer wing panels. The fuselage was of the pod and boom type. The forward structure, used to support the pilot and the drive system, was made of steel tubing, with the rest of the fuselage being made of spruce and balsa. The pilot was placed in a conventional cycling position, and powered a pylon-mounted pusher propeller via a chain drive. The undercarriage consisted of a single geared bicycle wheel. The empennage consisted of a fin and rudder, and an all-flying tail-plane. Lateral and directional control was through a horizontal control bar which could be pivoted in two dimensions, and pitch control was by a twist grip to the starboard side of the bar. The entire aircraft was covered in a silver Melinex plastic film, with the exception of the top forward section of the fuselage which is covered with a transparent film. Due to RAF Halton having only grass airfields, the aircraft was transferred over to RAF Benson, South Oxfordshire to take advantage of the latter's paved runways. The Jupiter first flew on 9 February 1972, covering approximately 200 yd (180 m). In a flight programme which continued through to the end of May 1972, and with Potter as a pilot, 60 flights were made. During that period, Potter amassed approximately 1 hour's worth of flying time. On 29 May 1972, Potter flew a distance of 1,171 yd (1,071 m), in a flight which lasted 1 minute 47.4 seconds. This flight, which was officially observed, set new distance and duration records for a human-powered aircraft. Another, not officially observed, covered 1,355 yd (1,239 m), and ended only due to the Jupiter having reached the end of the runway. The aircraft is now in storage at the Foulton Halbard collection at Filching Manor, Wealden, East Sussex.

Specifications Data from Jane's all the world's aircraft 1972-73General characteristics Crew: 1 Length: 29 ft 6 in (8.99 m) Wingspan: 80 ft (24 m) Height: 10 ft (3.0 m) (propeller blades horizontal) Wing area: 300 sq ft (28 m2) Aspect ratio: 20.7 Airfoil: NACA 653618 Empty weight: 146 lb (66 kg) Gross weight: 300 lb (136 kg) Propellers: 2-bladed, 9 ft (2.7 m) diameter fixed-pitch, 150 rpm Performance

Maximum speed: 30 mph (48 km/h, 26 kn) Cruise speed: 20 mph (32 km/h, 17 kn) Stall speed: 18 mph (29 km/h, 16 kn) Wing loading: 1.00 lb/sq ft (4.9 kg/m2)

Worked examples

Example 1 — a first encounter with Halton Jupiter

Start with the simplest possible case. Write down what Halton Jupiter 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 Halton Jupiter 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 Halton Jupiter 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 Halton Jupiter

In research: Halton Jupiter 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 Halton Jupiter 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: Halton Jupiter is common in secondary-school and first-year university syllabi. It links to neighbouring topics 1970s British experimental aircraft, Aircraft first flown in 1972, Aircraft with fixed landing gear, so understanding it makes those chapters shorter.
In everyday life: Look for Halton Jupiter 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 Halton Jupiter in 20 minutes

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

Frequently asked questions

What is Halton Jupiter in simple terms?

The Halton Jupiter was a human-powered aircraft which established distance and duration records in the early 1970s. Background The aircraft was originally designed in 1963 by Chris Roper of Woodford, Essex.

Why does Halton Jupiter 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 Halton Jupiter?

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 Halton Jupiter.