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GB790886A - Improvements in or relating to error indicators for air fire target practice - Google Patents

Improvements in or relating to error indicators for air fire target practice

Info

Publication number
GB790886A
GB790886A GB6588/56A GB658856A GB790886A GB 790886 A GB790886 A GB 790886A GB 6588/56 A GB6588/56 A GB 6588/56A GB 658856 A GB658856 A GB 658856A GB 790886 A GB790886 A GB 790886A
Authority
GB
United Kingdom
Prior art keywords
microphone
frame
aeroplane
march
relating
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.)
Expired
Application number
GB6588/56A
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.)
Saab AB
Original Assignee
Svenska Aeroplan AB
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 Svenska Aeroplan AB filed Critical Svenska Aeroplan AB
Publication of GB790886A publication Critical patent/GB790886A/en
Expired legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F41—WEAPONS
    • F41J—TARGETS; TARGET RANGES; BULLET CATCHERS
    • F41J5/00—Target indicating systems; Target-hit or score detecting systems
    • F41J5/06—Acoustic hit-indicating systems, i.e. detecting of shock waves
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S1/00—Beacons or beacon systems transmitting signals having a characteristic or characteristics capable of being detected by non-directional receivers and defining directions, positions, or position lines fixed relatively to the beacon transmitters; Receivers co-operating therewith
    • G01S1/72—Beacons or beacon systems transmitting signals having a characteristic or characteristics capable of being detected by non-directional receivers and defining directions, positions, or position lines fixed relatively to the beacon transmitters; Receivers co-operating therewith using ultrasonic, sonic or infrasonic waves

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • General Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • General Physics & Mathematics (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)

Abstract

790,886. Targets. SVENSKA AEROPLAN AKTIEBOLAGET. March 2, 1956 [March 9, 1955], No. 6588/56. Class 20(1) [Also in Groups XXXVIII and XXXIX] A microphone 2, having a non-magnetic acoustic diaphragm carrying an armature at or near its centre, is used to detect shock waves produced by a projectile fired at a target towed by an aeroplane and, provided a shockwave has an intensity above a predetermined value, the microphone output operates recording apparatus in the aeroplane to record a hit. The microphone 2 is resiliently mounted on a metal frame 45 secured in a hollow streamlined body 1 through the nose of which a towing cable, including two conductors for the microphone is introduced and clamped to the frame. The tail of the body contains a rod 47 attached to the frame and connectible to a target. The centre portion of the body 1 surrounding the microphone 2 comprises two perforated metal cylinders covered with metal 'gauze.
GB6588/56A 1955-03-09 1956-03-02 Improvements in or relating to error indicators for air fire target practice Expired GB790886A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE790886X 1955-03-09

Publications (1)

Publication Number Publication Date
GB790886A true GB790886A (en) 1958-02-19

Family

ID=20339157

Family Applications (1)

Application Number Title Priority Date Filing Date
GB6588/56A Expired GB790886A (en) 1955-03-09 1956-03-02 Improvements in or relating to error indicators for air fire target practice

Country Status (1)

Country Link
GB (1) GB790886A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2120760A (en) * 1979-01-08 1983-12-07 Australasian Training Aids Pty Marksmanship training apparatus

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2120760A (en) * 1979-01-08 1983-12-07 Australasian Training Aids Pty Marksmanship training apparatus

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