GB614623A - Improvements in and relating to rotative aerofoils with propulsive ducts - Google Patents

Improvements in and relating to rotative aerofoils with propulsive ducts

Info

Publication number
GB614623A
GB614623A GB2215646A GB2215646A GB614623A GB 614623 A GB614623 A GB 614623A GB 2215646 A GB2215646 A GB 2215646A GB 2215646 A GB2215646 A GB 2215646A GB 614623 A GB614623 A GB 614623A
Authority
GB
United Kingdom
Prior art keywords
blade
duct
swept
aerofoils
rotative
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
GB2215646A
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.)
JACOB SAMUEL SHAPIRO
Cierva Autogiro Co Ltd
Original Assignee
JACOB SAMUEL SHAPIRO
Cierva Autogiro Co Ltd
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 JACOB SAMUEL SHAPIRO, Cierva Autogiro Co Ltd filed Critical JACOB SAMUEL SHAPIRO
Priority to GB2215646A priority Critical patent/GB614623A/en
Publication of GB614623A publication Critical patent/GB614623A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B64—AIRCRAFT; AVIATION; COSMONAUTICS
    • B64C—AEROPLANES; HELICOPTERS
    • B64C27/00—Rotorcraft; Rotors peculiar thereto
    • B64C27/04—Helicopters
    • B64C27/12—Rotor drives
    • B64C27/16—Drive of rotors by means, e.g. propellers, mounted on rotor blades
    • B64C27/18—Drive of rotors by means, e.g. propellers, mounted on rotor blades the means being jet-reaction apparatus
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02K—JET-PROPULSION PLANTS
    • F02K7/00—Plants in which the working fluid is used in a jet only, i.e. the plants not having a turbine or other engine driving a compressor or a ducted fan; Control thereof
    • F02K7/005—Plants in which the working fluid is used in a jet only, i.e. the plants not having a turbine or other engine driving a compressor or a ducted fan; Control thereof the engine comprising a rotor rotating under the actions of jets issuing from this rotor

Abstract

614,623. Helicopters. CIERVA AUTOGIRO CO., Ltd., SHAPIRO, J. S., and PULLIN, C. G. July 25, 1946, No. 22156. [Class 4] [Also in Group XXVI] A blade of a helicopter or like rotor is provided with a propulsive duct of the continuous flow or intermittent type at its outer extremity, the blade being generally straight, except at the portion adjacent the duct where it has a pronounced sweep-back or sweep-forward. Fig. 1 shows a blade 5 with a swept-forward portion carrying the duct 6 in an inclined position, as in Specification 614,624. In order to minimise the twisting moment on the blade, the latter may be given a curved form comprising a swept-back portion joined to the straight inner portion of the blade, continued by a swept-forward portion carrying the duct, or the reverse arrangement may be adopted.
GB2215646A 1946-07-25 1946-07-25 Improvements in and relating to rotative aerofoils with propulsive ducts Expired GB614623A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2215646A GB614623A (en) 1946-07-25 1946-07-25 Improvements in and relating to rotative aerofoils with propulsive ducts

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2215646A GB614623A (en) 1946-07-25 1946-07-25 Improvements in and relating to rotative aerofoils with propulsive ducts

Publications (1)

Publication Number Publication Date
GB614623A true GB614623A (en) 1948-12-17

Family

ID=10174835

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2215646A Expired GB614623A (en) 1946-07-25 1946-07-25 Improvements in and relating to rotative aerofoils with propulsive ducts

Country Status (1)

Country Link
GB (1) GB614623A (en)

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