FR2387671A1 - Aerodynamic profile for arrow or discus - has helical groove around shaft or peripheral surface to produce rotation and reduced resistance - Google Patents

Aerodynamic profile for arrow or discus - has helical groove around shaft or peripheral surface to produce rotation and reduced resistance

Info

Publication number
FR2387671A1
FR2387671A1 FR7631664A FR7631664A FR2387671A1 FR 2387671 A1 FR2387671 A1 FR 2387671A1 FR 7631664 A FR7631664 A FR 7631664A FR 7631664 A FR7631664 A FR 7631664A FR 2387671 A1 FR2387671 A1 FR 2387671A1
Authority
FR
France
Prior art keywords
arrow
aerodynamic profile
helical groove
discus
peripheral surface
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
FR7631664A
Other languages
French (fr)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
QUIQUANDON MAURICE
Original Assignee
QUIQUANDON MAURICE
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by QUIQUANDON MAURICE filed Critical QUIQUANDON MAURICE
Priority to FR7631664A priority Critical patent/FR2387671A1/en
Publication of FR2387671A1 publication Critical patent/FR2387671A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F41—WEAPONS
    • F41A—FUNCTIONAL FEATURES OR DETAILS COMMON TO BOTH SMALLARMS AND ORDNANCE, e.g. CANNONS; MOUNTINGS FOR SMALLARMS OR ORDNANCE
    • F41A21/00—Barrels; Gun tubes; Muzzle attachments; Barrel mounting means
    • F41A21/16—Barrels or gun tubes characterised by the shape of the bore
    • F41A21/18—Grooves-Rifling
    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B65/00—Implements for throwing  ; Mechanical projectors, e.g. using spring force
    • A63B65/02—Spears or the like ; Javelins
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42—AMMUNITION; BLASTING
    • F42B—EXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
    • F42B10/00—Means for influencing, e.g. improving, the aerodynamic properties of projectiles or missiles; Arrangements on projectiles or missiles for stabilising, steering, range-reducing, range-increasing or fall-retarding
    • F42B10/02—Stabilising arrangements
    • F42B10/22—Projectiles of cannelured type
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42—AMMUNITION; BLASTING
    • F42B—EXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
    • F42B10/00—Means for influencing, e.g. improving, the aerodynamic properties of projectiles or missiles; Arrangements on projectiles or missiles for stabilising, steering, range-reducing, range-increasing or fall-retarding
    • F42B10/02—Stabilising arrangements
    • F42B10/22—Projectiles of cannelured type
    • F42B10/24—Projectiles of cannelured type with inclined grooves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42—AMMUNITION; BLASTING
    • F42B—EXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
    • F42B6/00—Projectiles or missiles specially adapted for projection without use of explosive or combustible propellant charge, e.g. for blow guns, bows or crossbows, hand-held spring or air guns
    • F42B6/02—Arrows; Crossbow bolts; Harpoons for hand-held spring or air guns
    • F42B6/04—Archery arrows

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Physical Education & Sports Medicine (AREA)
  • Footwear And Its Accessory, Manufacturing Method And Apparatuses (AREA)

Abstract

The aerodynamic profile is applied to arrows, discuss and similar projectiles used in sporting activities. It is in the form of helical groove which is machined or moulded into the shaft of the arrow. In the case of a discuss, this groove is similarly produced around the peripheral surfaces of the projectile. The groove has a wide pitch between turns and is intended to reduce the air resistance on the surface and to improve the stabilising rotation of the projectile. It also flattens the and elongates the trajectory during its flight.
FR7631664A 1976-10-21 1976-10-21 Aerodynamic profile for arrow or discus - has helical groove around shaft or peripheral surface to produce rotation and reduced resistance Withdrawn FR2387671A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7631664A FR2387671A1 (en) 1976-10-21 1976-10-21 Aerodynamic profile for arrow or discus - has helical groove around shaft or peripheral surface to produce rotation and reduced resistance

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7631664A FR2387671A1 (en) 1976-10-21 1976-10-21 Aerodynamic profile for arrow or discus - has helical groove around shaft or peripheral surface to produce rotation and reduced resistance

Publications (1)

Publication Number Publication Date
FR2387671A1 true FR2387671A1 (en) 1978-11-17

Family

ID=9179027

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7631664A Withdrawn FR2387671A1 (en) 1976-10-21 1976-10-21 Aerodynamic profile for arrow or discus - has helical groove around shaft or peripheral surface to produce rotation and reduced resistance

Country Status (1)

Country Link
FR (1) FR2387671A1 (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0502221A1 (en) * 1987-08-11 1992-09-09 McClain III, Harry T. Grooved projectile with improved aerodynamic properties
US5273293A (en) * 1983-07-13 1993-12-28 Lekavich Carl W Arrow shaft
ES2116142A1 (en) * 1994-03-02 1998-07-01 Pascual Forte Francisco Improved cartridge for firearms with aerodynamic projectile
NL1025447C2 (en) * 2004-02-09 2005-08-10 Antonius Maria Snijders Bow for shooting arrows has elastically bendable arch formed by hand grip and two flexible arches connected to hand grip on opposite sides by bolts and wing nuts
US8920270B2 (en) 2012-06-30 2014-12-30 Easton Technical Products, Inc. Arrow vane apparatus and method

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5273293A (en) * 1983-07-13 1993-12-28 Lekavich Carl W Arrow shaft
EP0502221A1 (en) * 1987-08-11 1992-09-09 McClain III, Harry T. Grooved projectile with improved aerodynamic properties
ES2116142A1 (en) * 1994-03-02 1998-07-01 Pascual Forte Francisco Improved cartridge for firearms with aerodynamic projectile
NL1025447C2 (en) * 2004-02-09 2005-08-10 Antonius Maria Snijders Bow for shooting arrows has elastically bendable arch formed by hand grip and two flexible arches connected to hand grip on opposite sides by bolts and wing nuts
US8920270B2 (en) 2012-06-30 2014-12-30 Easton Technical Products, Inc. Arrow vane apparatus and method

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Legal Events

Date Code Title Description
ST Notification of lapse